To improve the use life of heat resistant steel products, decline in use of manufacturer to produce cost, add product utilizing life, according to our factory for many years engaged in heat resistant steel yield and combining different areas, different application environment, using the method of the experience, formulates this profile, for users to see.
Content is as follows: 1, box, car plate type resistance furnace, the furnace plate before using a high temperature tempering, control the temperature over 950 degrees, insulation 1 -
2 hours, with the furnace cooling, mainly to eliminate internal stress in the casting
process, the furnace plate in use process, ensure the workpiece put evenly, homework can not be piled up in one part of the bearing, it will make in the process of heating results in uneven furnace plate in the process of heat dissipation, easy to form the furnace plate deformation and cracking, decline of furnace bottom using life, about 240 hours used in furnace bottom, need to remove the furnace plate, finishing under fallen oxidation furnace bottom of skin, avoid the scale formation of resistance wire short circuit, through the furnace bottom, if you have any special technical requirements, can not meet the above requirements, can contact, and produces the factory produce by manufacturer according to the actual situation, make perfect production process.
2, carburizing furnace, its fittings need to have a high temperature tempering before use, control the temperature over 950 degrees, insulation 1 -
2 hours, with the furnace cooling, mainly is to eliminate the internal stress in the process of casting.
3, each type of material basket when using, the workpiece should be uniform, weight must not exceed the maximum bearing capacity when material basket design, should drop spike light when lifting material basket, apply in time to 90 days, will be hoisted out carburizing furnace tank, clean furnace tank scale.
4, spreader, basket, in the selection of spreader, material defect, should choose the raw material for ZG40Gr25Ni20 electrode, the trademark in the quenching process of creep performance is good, not form a spreader and basket of severe deformation and cracking, before using a high temperature tempering, control the temperature over 950 degrees, insulation 1 -
2 hours, with the furnace cooling, mainly is the internal stress in the process of eliminating casting, add using life of the products.
Above 5, heat resistant steel products in use process, if discover partial rendering crack, can use ZG40Gr25Ni20 electrode welding.
6, other types of heat resistant steel in the process of use should be reference to the use of above methods.
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