In order to improve the service life of heat-resistant steel products, water glass casting products, reduce the production cost of the manufacturer, and increase the service life of the products, this brief introduction is prepared for users’ reference according to our experience in heat-resistant steel production for many years and in combination with different regions, different use environments, and different use methods. The contents are as follows:

1. The box type and trolley type resistance furnace grate shall be subject to a high temperature tempering before use. The temperature shall be controlled above 950 ° C, kept for 1-2 hours, and cooled with the furnace. The main purpose is to eliminate the internal stress in the casting process. During the use of the furnace plate, the workpiece shall be placed evenly, and the work shall not be stacked at a local location, which will lead to uneven heat dissipation of the furnace plate during the heating process, It is easy to cause deformation and cracking of the furnace plate and reduce the service life of the furnace bottom plate. When the furnace bottom plate is used for about 240 hours, it is necessary to take out the furnace plate, clean the oxide skin falling off the workpiece under the furnace bottom plate, and prevent the oxide skin from causing short circuit of the resistance wire and breakdown of the furnace bottom plate. If there are special process requirements and the above requirements cannot be met, contact the manufacturer, and the manufacturer will develop a perfect production process according to the actual situation.

2. The accessories of the carburizing furnace shall be subject to a high temperature tempering before use. The temperature shall be controlled above 950 ° C, kept for 1-2 hours, and cooled with the furnace, mainly to eliminate the internal stress in the casting process.

3. When each type of basket is used, the workpieces shall be placed evenly, and the weight shall not exceed the maximum bearing capacity of the basket design. The basket shall be lifted gently. After 90 days of use, the carburizing furnace tank shall be lifted out and the oxide skin in the furnace tank shall be cleaned.

4. When selecting slings and baskets, ZG40Gr25Ni20 welding rod shall be selected. This brand has good creep performance during quenching, and will not cause serious deformation and cracking of slings and baskets. Before use, a high temperature tempering shall be carried out. The temperature shall be controlled above 950 ° C, kept for 1-2 hours, and cooled in the furnace. The main purpose is to eliminate the internal stress in the casting process and increase the service life of the product.