According to the characteristics of the permanent mold casting process, in order to ensure the casting quality, simplify the permanent mold structure and make full use of its technical and economic benefits, the structure of permanent mold casting must be analyzed and a reasonable casting process must be worked out.
Austenitizing is the first step in the quenching of Ductile Iron Castings. The austenitizing temperature is 860-880 °C, and the holding time is 1 hour for every 25mm thick casting, which is the same as that of normalizing and annealing. After the insulation is finished, it cools quickly in the flowing air. After quenching, the castings […]
Continuous hardening furnace is the tunnel type; the length of the furnace is usually long. Workpieces go through the inside of the furnace with different temperature sections. Hardening furnace consists of heating element, heat resistant material, refractory bricks, furnace front door, and back door, lifting system, hydraulic system, tipper. Each section of the furnace has […]
A.1 Under the following normal operating conditions, the ball broken rate and wear rate of the ball mill running for 2000h and 3000h are shown in Table A. 1.