In the production and casting of cast iron welding platform, if the pouring temperature is not well grasped, the yield of the platform will be greatly reduced. Then how much is the appropriate pouring temperature of the cast iron welding platform and T-slot welding platform? 　　

Excessive pouring temperature during casting of welding platform, cast iron welding platform, and riveting welding platform will greatly increase the proportion of waste products. Too high pouring temperature will cause the sand mold to swell, especially for gray cast iron parts with complex sand cores. When the pouring temperature is ≥1420℃, the waste will increase. When the pouring temperature is 1460℃, the waste will reach 50%. In production, the use of induction electric furnace smelting can better control the molten iron.

Defects that may be formed when the pouring temperature of welding platform, welding plate, welding workbench, and welding iron floor is too low:

(1) Manganese sulfide pores. These pores are located below the surface of gray cast iron parts and are mostly on top. They are often exposed after processing. The pore diameter is about 2-6mm. Sometimes the holes contain a small amount of slag. Studies have shown that this defect is caused by the mixture of MnS segregation and slag. The reason is the low pouring temperature and the high content of Mn and S in the molten iron. Such S content and appropriate Mn content (0.5~0.65) can change the purity of molten iron and prevent such defects.　　

(2) The pores and multi-cavity pores caused by the sand core gas are often caused by the poor exhaust of the sand core. Because the sand core is hardened in the core box during core making, the number of sand core vent holes is often insufficient. In order to form vent holes, drill holes can be supplemented after the core is hardened.　　

(3) After the liquid slag is processed, individual small holes will be found under the surface of the gray cast iron. The diameter of the holes is generally 1~3mm. In some cases, there are only 1 to 2 small holes. Studies have shown that these small holes appear together with a small amount of liquid slag, but no S segregation is found there. Research shows that this defect is related to the pouring temperature. When the pouring temperature is higher than 1380℃, no such defects are found in the castings, so the pouring temperature should be controlled at 1380-1420℃. It is worth mentioning that changing the design of the pouring system failed to achieve this defect, so this defect can be considered to be caused by the low pouring temperature and the molten iron pouring under a trace reduction atmosphere.

cast iron welding platform

Jinggong Measuring Tools Producing Co., Ltd is specializing in manufacturing and exporting all kinds of cast iron products，especially for cast iron floor plates, cast iron surface plates, cast iron clamping plates, cast iron angle plates, cast iron box table and other machine tool castings. Our engineering enables us to design the cast iron plates and tables according to DIN Standards, Indian Standards and Chinese Standards, machining by CNC machine tools and install in the world market.