Casting Crane High-Temperature Protection | Steel Plant & Foundry Guide
Casting cranes are the core lifting equipment exclusive to steel mills, precision foundries and metallurgical workshops, which are mainly responsible for high-risk operations such as steel ladle and iron ladle transfer, high-temperature casting lifting, and metallurgical equipment shifting, etc. A high-temperature casting crane suitable for steel mill conditions does not rely on a single protective structure to realize heat-resistant operations.
A high-temperature resistant casting Crane suitable for steel plant conditions, not relying on a single protective structure to achieve heat-resistant operation, but through the entire structure of the machine protection, heat-resistant core components selection, circuit insulation layout, safety warning system combination.
The main application scenarios of casting cranes
Casting Crane belongs to the special metallurgical lifting equipment, only adapted to high temperature molten metal operation scenes, ordinary workshop Overhead Crane can not be replaced, the intensity of high temperature in different scenes, the frequency of operation, corresponding to the standard of protection configuration is also different.
Iron and steel smelting plant
Iron and steel plant steelmaking workshop is the core application scenario of casting cranes, mainly responsible for steel ladle transfer, molten steel blending, steelmaking supporting heavy equipment lifting and shifting.
Here there is long-term high-intensity heat radiation, high ambient temperatures, dust burning, equipment needs to be 24 hours non-stop cycle of operation, the heat-resistant design standards for metallurgical Crane is extremely high.
Industrial Foundry
Various types of heavy industry foundries, hardware foundries, need to frequently lift molten iron, alloy liquid, complete the mold alignment, casting lifting, finished product transfer and other work.
The operation area is very close to the furnace and casting station, and the instantaneous heat radiation intensity is large, which is easy to cause continuous loss to the Crane's electrical, braking and steel structure.
Continuous casting production workshop
Continuous casting production line has a fixed operating rhythm and high frequency, and the Crane needs to complete the replacement, transfer and alignment of ladle and intermediate ladle at a fixed point for a long period of time.
The equipment is in a fixed high-temperature area for a long time, and the local heat stabilization requires strict requirements for high-temperature stability and continuous operation ability of the accessories.
Supporting area of steel rolling workshop
There are a lot of high-temperature hot rolling materials around the steel rolling workshop, and the equipment is mainly used for transferring high-temperature steel materials and overhauling and hoisting heavy equipment in the workshop.
Although there is no direct molten metal heat source, the overall temperature of the environment is high, and there is a large amount of hot dust accumulation, which requires long-lasting heat-resistant and dust-proof protective configurations.
Metallurgical Equipment Overhaul Workshop
The metallurgical plant is an exclusive overhaul workshop, mainly responsible for overhauling and hoisting of steelmaking equipment, ladles and old Crane parts.
The equipment to be repaired has its own residual temperature, the workshop has been in a high temperature state for a long time, the equipment needs to be adapted to intermittent high-temperature operation conditions, to avoid failure problems caused by high temperature.
Casting Crane working conditions of the core use of demand
High-temperature metallurgy scenarios are far more risky than ordinary workshops, the core needs of the equipment is no longer limited to the basic lifting, but centered around heat resistance, stability, safety, easy maintenance to start, adapted to long-term harsh working conditions.
Heat radiation resistance
Furnace, ladle, molten metal will continue to emit high-intensity heat radiation to the outside, close to the operation of the Crane steel structure, electrical fittings, wire rope will be baked by the continuous high temperature.
The equipment must be equipped with professional heat insulation protection structure, blocking heat radiation conduction, to avoid high-temperature aging of accessories, structural deformation and other potential safety hazards.
Stability of operation in high-temperature environment
Metallurgical workshop is in a high temperature state all year round, the indoor temperature will rise sharply in summer, ordinary Crane motors, brakes, cables, electronic control systems are very prone to overheating failure.
Steel ladle Crane protection system needs to ensure that the core components in the high-temperature environment continued stable operation, there will be no shutdown, malfunction, brake failure and other problems.
Heavy-duty continuous operation performance
Iron and steel smelting, casting production is a non-stop assembly line operation, casting cranes without frequent downtime rest time, the intensity of the operating cycle, high load.
The overall structure of the equipment and accessories selection must be adapted to high-frequency, heavy-duty, uninterrupted extreme mode of operation, the fault tolerance rate is extremely low.
High-level safety protection standards
Molten metal lifting is a high-risk operation, which can cause serious production safety accidents in case of equipment failure or falling objects.
Compared with ordinary lifting equipment, casting Cranes need to be equipped with multiple redundant safety designs, combined with high temperature protection system, to avoid the safety risks caused by high temperature.
Convenient maintenance conditions
High-temperature protection structure can not be overly closed to the core area of the equipment, you need to reserve a reasonable maintenance space. Maintenance personnel can quickly complete parts testing, replacement, maintenance work, reducing equipment downtime.
Casting Crane Models Suitable for High Temperature Working Conditions
Different metallurgical projects, capacity, working conditions, high-temperature intensity, lifting tonnage is different, suitable for high-temperature Crane design models are also significantly different, according to the need for selection in order to balance the safety and practicality.
Double Girder Casting Crane
This is the most widely used standard metallurgical crane on the market, the overall structure is solid, and the load range covers the needs of conventional metallurgical projects.
Suitable for small and medium-sized iron and steel mills, ordinary foundries, molten metal transfer, casting lifting operations, standard with a full set of high-temperature protection structure of the foundation, cost-effective and practical both.
Four-girder casting Crane
The four-girder structure greatly improves the overall load-bearing strength and structural stability of the equipment, which can be adapted to large-tonnage heavy-duty lifting and ultra-high-frequency continuous operation conditions.
Mostly used in large-scale iron and steel hub plant, high-strength continuous casting production line, is the core of the high-temperature operation area of the special main equipment, high-temperature protection configuration is fully upgraded.
Henan Mine Four-Girder Casting Bridge Crane
Metallurgical Overhead Crane
Designed for general high-temperature working conditions in metallurgical workshops, it is suitable for hot rolling workshop, auxiliary casting station, metallurgical equipment overhaul and other non-core high-intensity molten lifting scenarios.
The heat-resistant protection configuration is adapted to the auxiliary high-temperature operation requirements, which can meet the diversified high-temperature lifting operation requirements in the factory.
Henan Mine Manufactured Unmanned Grab Crane
Customized high-temperature casting Crane
Customized for special working conditions, such as close heat source operation, ultra-high ambient temperature, special workshop layout, high-risk molten metal lifting scenarios.
Additional reinforced heat insulation layer, multiple redundant safety systems, exclusive heat dissipation structure, fully adapted to the project's special high-temperature operational needs, is the preferred model for customized molten metal lifting Crane.
Casting Crane’s Core High Temperature Protection Configuration
Casting Crane's ability to withstand high temperatures comes from the machine's multi-dimensional protection design, each configuration corresponds to the solution of common equipment failures under high-temperature working conditions, but also the core verification of the procurement selection focus.
Heat shield and heat shield of the whole machine
This is the most basic and core high temperature protection structure. Equipment trolley, lifting mechanism, motor, electronic control box and other core precision parts on the outside, will be installed with special heat insulation board and cover.
It can effectively block the heat radiation emitted from the furnace and steel ladle, reduce the direct baking of high temperature, avoid aging and malfunctioning of core components due to high temperature, and reduce high temperature loss from the source.
High-temperature-resistant special cable
Ordinary cables in the high temperature, burning dust environment, the outer skin is easy to aging and cracking, line short-circuit, triggering equipment failure and safety hazards.
Casting Crane adopts high-temperature resistant and flame retardant cables, with high temperature resistance, anti-aging, flame retardant, dust-proof characteristics, suitable for long-term high-temperature wiring environment, to ensure stable operation of the circuit system.
High-temperature special protection motor
Motor is the power core of Crane, but also the most vulnerable to high temperature accessories. Ordinary motors operating in high temperature environment, easy to overheat demagnetization, power loss, burned out.
The motors suitable for metallurgical conditions have been upgraded with special high-temperature resistance and auxiliary heat dissipation structure, which can continuously and stably output power in high-temperature environment without performance degradation due to the rise of ambient temperature.
Brake System High Temperature Protection
Brake friction material, spring structure is extremely sensitive to temperature, high temperature environment will lead to brake performance degradation, brake failure, is a major safety hazard of molten lifting operations.
Crane braking system is equipped with exclusive heat insulation protection structure, with high temperature friction materials, and optimized ventilation and heat dissipation design, to ensure that the braking under high temperature conditions sensitive and stable.
Closed protection electric control system
Precision electrical components such as electrical control cabinets, contactors and control modules are highly sensitive to temperature and dust. High temperature and dust accumulation will easily cause poor circuit contact and component burnout.
Professional casting Crane adopts closed electrical control box, with internal heat insulation, heat dissipation, dust-proof design, isolate the external high temperature and dust, to protect the control system accurate and stable operation.
Intelligent temperature protection device
The equipment is equipped with an exclusive temperature monitoring and overheating protection device, which can monitor the operating temperature of the motor, electronic control and steel structure in real time.
Once the temperature exceeds the safety threshold, the system will automatically trigger warning, overload protection or shutdown protection to avoid equipment damage or safety accidents caused by high temperature continuous operation.
High-temperature anti-corrosion protection of steel structure
Crane main girder, end girder and other steel structures are subject to high temperature baking and hot dust corrosion for a long period of time, and ordinary paint is easy to peel and fall off, which in turn leads to structural corrosion and loss of strength.
Casting Crane whole machine with high temperature resistant special coating, with multi-layer protection process, high temperature resistance, anti-aging, anti-corrosion, and effectively protect the steel structure for long-term stable use.
Optimized design of equipment layout and heat insulation
In addition to the passive protection structure, the overall layout of the equipment will be specially optimized. Precise heat-resistant components such as motors, electronic controls, brakes, etc. are arranged in areas far away from high-temperature heat sources.
Through the optimization of structural layout, reduce the direct heat source and thermal radiation impact, from the design level to reduce the loss of high temperature on the equipment.
Procurement must confirm the core technical parameters
Adaptation of parameters under high-temperature working conditions is far more demanding than conventional Crane, each parameter is related to the safety and stability of the equipment, the procurement stage must be verified one by one to confirm.
Rated lifting tonnage
According to the steel ladle, iron ladle weight, molten metal maximum load, spreader weight comprehensive accounting, must be reserved for adequate load capacity. Eliminate full load and overload operation, and reduce the structural loss of equipment under high temperature working conditions.
Equipment span
Strictly match the center distance of the track of the workshop and the layout of the operation area, and adapt to the operation path of the workshop assembly line, so as to ensure that there is no jamming in the operation of the equipment, and no blind zone in the operation.
Effective lifting height
Combined with the molten metal transfer process, steel ladle lifting path, plant floor height, equipment safety distance design, to avoid insufficient space and equipment collision problems in the high temperature lifting process.
Working level
Metallurgical casting operation is an ultra-high load cycle working condition, and heavy and ultra-heavy duty working level must be selected. Ordinary Crane working level can not be adapted to high-frequency high-temperature continuous operation, and it is very easy to be damaged quickly.
Ambient temperature and heat source distance
When purchasing, you need to specify the maximum ambient temperature of the workshop all year round, the minimum distance between the equipment operation point and the heat source of the furnace, and the manufacturer will match the corresponding level of protection and heat dissipation configurations according to the actual high-temperature working conditions.
Scope of thermal protection configuration
You need to specify which parts of the equipment are equipped with thermal insulation protection, thickness of the insulation layer, protection materials, heat dissipation structure design, to confirm that the protection configuration can cover all the core heated parts.
Protection level of core parts
Focus on checking the motor, brake, cable, electronic control system of the high temperature rating and protection standards, to confirm that the parameters of the accessories are suitable for the project high temperature conditions, to avoid the stability of the equipment is affected by low accessories.
Maneuvering mode
According to the safety requirements of the workshop, we can choose cab control, remote control and other modes, and prioritize remote control for high-temperature and high-risk scenarios, so as to reduce the risk of close contact with high-temperature heat sources.
Multiple safety redundancy configuration
Overload protection, high temperature warning, emergency braking, double braking, fall prevention and other redundant safety configurations must be verified, multiple protection to avoid the high risk of molten metal lifting.
Reliable casting crane manufacturers screening criteria
High-temperature metallurgical equipment on the manufacturer's technical accumulation and project experience requirements are extremely high, ordinary Crane manufacturers can not meet the special design needs of high-temperature protection, screening suppliers can focus on the following dimensions.
Verification of metallurgical special production experience
Priority is given to entity manufacturers that specialize in metallurgical high temperature lifting equipment, as distinguished from ordinary workshop Crane manufacturers. Manufacturers must be familiar with the high-temperature working conditions and safety standards in steel mills and foundries.
Have mature high-temperature protection structure design, process optimization capabilities, rather than simply adding heat insulation accessories.
Verification of similar landing project cases
Focus on checking the manufacturers in the steel mills, continuous casting workshop, large foundries real landing project, especially the same tonnage, the same working conditions of the high temperature equipment cases.
Rich metallurgical project experience, on behalf of manufacturers can accurately match the demand for working conditions, to avoid all kinds of high temperature adaptation hidden danger.
Evaluation of special project adaptability
High-quality manufacturers will take the initiative to match the workshop temperature, heat source location, frequency of operation, working level and other core working conditions to optimize the equipment protection configuration and structural design.
According to the actual high-temperature environment of the project, customized adapted high-temperature protection program, rather than applying common models.
Verification of a full set of professional and technical information
Regular manufacturers can provide equipment assembly drawings, high-temperature protection special instructions, electrical schematic diagrams, wheel pressure parameters, core parts list, adaptive reports and other complete sets of information to meet the project acceptance and operation and maintenance needs.
Confirm the quality and protection level of core parts
We focus on verifying the brands and high-temperature resistance parameters of core accessories such as motors, reducers, brakes, high-temperature resistant cables, electronic control systems, hooks, wire ropes, etc., to ensure that all accessories are suitable for high-temperature working conditions.
Strict factory quality inspection process
Before the equipment leaves the factory, it is necessary to complete the weld inspection, no-load test run, full-load load test, high temperature protection function verification, and the whole machine performance inspection, and keep complete inspection records to ensure that the high temperature protection performance of the equipment is up to standard.
Clearly define the scope of installation and commissioning services
Confirm in advance the supply of manufacturers, on-site installation guidance, machine commissioning, operator training, production acceptance and other services to ensure that the equipment can be quickly adapted to high-temperature conditions after entering the field for production use.
Verification of after-sales and spare parts protection ability
Steel plant downtime losses are extremely high, manufacturers need to have a rapid after-sales response, spare parts inventory, remote troubleshooting, on-site maintenance capabilities, and timely resolution of high-temperature equipment failure.
Common Misconceptions in Purchasing and Selection
A lot of metallurgical equipment failures in the later stages of the procurement stage of cognitive bias, seemingly reasonable selection, will bury long-term safety and operation and maintenance of hidden dangers.
Only focus on the lifting tonnage of the equipment, ignoring the high temperature protection configuration and level of work, resulting in the equipment can not be adapted to sustained high-temperature heavy-duty operations.
Overhead Crane instead of special casting Crane, ordinary equipment without professional high temperature protection, short-term use will be burned accessories, structural deformation.
Ignore the actual high temperature intensity and distance from the heat source in the workshop, and choose the equipment with insufficient protection level, which can't resist the erosion of heat radiation.
Do not verify the motor, brake, circuit of the high temperature resistant configuration, only based on the manufacturer's verbal commitment, the later core components of frequent failures and downtime.
Neglecting the working level of equipment, replacing heavy metallurgical equipment with light equipment, and rapid aging and damage of equipment under high-frequency operation.
Omitting the safety redundancy configuration verification link, the equipment lacks multiple protection, increasing the safety risk of melting lifting operation.
Simply selecting the model based on low price, and low-priced equipment generally has problems such as protection reduction, low fittings, and process simplification.
If you do not check the metallurgical project cases of the manufacturers and choose suppliers with no experience in high-temperature equipment, the adaptability and safety of the equipment cannot be guaranteed.
Frequently Asked Questions
Why must casting Cranes be equipped with exclusive high temperature protection?
Cranes work in a high temperature environment with molten metal for a long time, facing heat radiation, high temperature airflow and burning dust. Ordinary lifting equipment without heat insulation, heat resistance, heat dissipation design, the core components will quickly fail at high temperatures, the steel structure is susceptible to heat deformation, which is very likely to cause equipment failure and safety accidents, so it must be equipped with a full set of high temperature protection system.
What is the core difference between casting Crane and ordinary Overhead Crane?
In addition to higher working level and safety level, the biggest difference is the full set of high temperature protection system. Casting Crane has a heat-insulating structure, heat-resistant accessories, high-temperature warning, exclusive heat dissipation design, can be adapted to high-temperature and high-risk conditions in metallurgy, ordinary cranes are completely irreplaceable.
Which parts of the Crane are most susceptible to high temperature?
Motor, brake, electronic control system, cable, wire rope is the most affected by high temperature parts. These precision parts have poor heat resistance, long-term heat radiation baking will appear aging, malfunction, burn, but also the core focus of high temperature protection parts.
Do all casting Cranes need to be retrofitted with heat shield?
The vast majority of metallurgical high-temperature working conditions need to be equipped with heat shield. Only away from the heat source of the auxiliary maintenance station equipment, according to the actual temperature can be simplified protection, but the core precision components of the basic thermal insulation protection can not be omitted.
How to determine whether the high temperature protection of motors and brakes meets the standard?
You can verify the accessories high temperature parameters, protection level certificate, manufacturers of high temperature working conditions test data, while referring to the same working conditions of the long-term operation of the landing equipment, to confirm that the accessories can be adapted to the project environment temperature for a long time.
Procurement of casting cranes need to confirm what the core issues to the manufacturer?
Focus on confirming the working level of the equipment, high temperature protection configuration range, the core parts of the heat level, safety redundancy design, working conditions to adapt to the program, similar project cases, after-sales response time and warranty details.
Can the same manufacturer support casting cranes and overhaul cranes in steel mills?
Professional metallurgical equipment manufacturers can provide one-stop high-temperature casting cranes, workshop maintenance cranes, auxiliary lifting equipment and a full range of products, unified equipment process standards and after-sales system to meet the full range of lifting needs of steel mills.
Summarize
Crane casting high temperature protection, not a single accessory upgrade, but the whole systematic protection project. Covering insulation structure, heat-resistant accessories, circuit protection, brake cooling, temperature monitoring, structural corrosion, layout optimization and other dimensions, is the core of the equipment to adapt to metallurgical high-temperature working conditions.
When purchasing and selecting, we should not only focus on the basic parameters such as lifting tonnage and span, but also match the corresponding high-temperature protection level and safety configurations with the actual temperature of the workshop, heat source conditions, frequency of operation and working level.
The core of choosing suppliers is to confirm that manufacturers have real metallurgical high-temperature equipment research and development, production, landing experience, and can provide perfect technical solutions, compliant protection configuration, complete technical information and long-term after-sales protection.
Henan Mine Crane Industrial (Crane Industrial) ploughs into the field of metallurgical high temperature lifting equipment for many years, focusing on the research and development and production of various types of high temperature casting cranes, adapted to all kinds of steel mills around the world, foundries, continuous casting workshop high-risk high-temperature operating conditions, can provide customized high-temperature protection solutions.
If you need to adapt to the project's exclusive equipment solutions, you can provide workshop drawings, lifting parameters, operating temperature, working level, our metallurgical engineering team will provide you with accurate selection, customized casting cranes for a full set of high-temperature protection!
