Knowledge of machined surfaces and solidification

2024/06/04

There will be many gray-black round shallow pits on the surface of meticulous machining. The pits will be filled with slag substances before the equipment is cleaned. The degree of these substances will directly affect the quality of our castings.

Meticulous machining is convenient, the use of saving its materials, in the process of operation can save its resources, many casting methods can only cast relatively simple castings, and another advantage of meticulous machining is that it can cast complex castings.

There are many problems that need to be paid attention to during the processing of meticulous machining, which is due to the poor activity function of molten steel. In the process of processing, in order to effectively prevent the occurrence of meticulous machining, the lack of pouring is cold insulation, so the wall thickness of meticulous machining cannot be less than 8mm.

The solidification method of detailed machining is as follows:

Intermediate solidification: The solidification of most alloys is between layer-by-layer solidification and paste solidification.

2, paste solidification: alloy crystallization temperature range is very wide, in the solidification of a certain period of time, there is no solid layer on the surface of detailed mechanical processing, solidification zone through the whole section, the first paste, after solidification.

3. Layer-by-layer solidification: There is no solidification zone in the solidification process of metal and eutectic alloy. The cross-sectional liquid and solid phases are clearly separated by a boundary. With the decrease of temperature, the solid phase layer increases continuously, the liquid phase layer decreases continuously, and the middle part.

Mechanical processing production process

Machining details, forging and casting

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What are the factors that affect high product components?

Machining has been used in many applications, because the current mechanical manufacturing requirements for output has declined, the requirements for size and shape have gradually increased, and high-product parts have a new development trend. The use of lathes requires different turning methods, but grinding, cutting, milling and other processes can be carried out in one lathe, and the development trend of process integration is more obvious.

Precautions and industrial requirements for detailed machining

Fine machining is a kind of casting process with little or no cutting. It is a good process technology in the casting industry, and its application is common. The reasons for choosing meticulous machining are as follows

"Machining" surface treatment

The manufacturing precision of meticulous machining is high, and the surface of the product is smooth during the use of the product, which means that the meticulous machining produced can save a lot of machining work and can be directly used in life. There will be many gray-black round shallow pits on the surface of meticulous machining. The pits will be filled with slag substances before the equipment is cleaned. The degree of these substances will directly affect the quality of our castings.

Machining Important Index and Structure Design

Meticulous mechanical processing in the production process because of its transition with a small size, so that it will make its mechanical properties good, meticulous mechanical processing can reach the degree of its fluidity and does not form bright crystal, the general temperature is 715~740 ℃. The production temperature of meticulous machining can have good fluidity in the process of transferring the melt to a certain extent. In the process of selecting the casting temperature, the equipment needs to be determined according to some factors such as the distance of transferring the melt and the cooling situation in the transferring process.