Machined surfaces and solidification knowledge
Time:
2024-04-30 18:14
Source:
there will be many gray-black circular shallow pits on the surface of the meticulous machining, and the equipment fills the pits with this slag material before cleaning, and these substances will directly affect the quality of our castings.
fine machining processing 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 fine machining is that complex castings can be cast.
fine machining needs to pay attention to many problems in processing, because the activity function of the molten steel is relatively poor, in the process of processing, we in order to effectively prevent its fine machining from pouring lack of waving is cold barrier, so that the wall thickness of fine machining can not be less than 8mm.
fine machining is as follows:
1. Intermediate solidification: The solidification of most alloys is between layer-by-layer solidification and paste-like solidification.
2. Paste solidification: the alloy crystallization temperature range is very wide, and there is no solid layer on the surface of fine machining during a certain period of solidification, and the solidification zone runs through the entire section, first paste, and then solidified.
3, solidification layer by layer: metal, eutectic alloy has no solidification zone during the solidification process, the section liquid, the solid phase is clearly separated by a boundary, with the decrease of temperature, the solid phase layer continues to increase, the liquid phase layer continues to decrease, the middle.
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Machining installation sequence and process
Determine the cutter point and tool change point; once determined, it is not suitable for substitution.
Machining technology heat treatment process
With the development of aerospace, industry, microelectronics industry, modern and bioengineering technology, the demand for / detailed mechanical parts (feature size in the micron to millimeter level) is increasingly urgent.
Details of machining, forging and casting
In the process of using detailed mechanical processing, its mechanical properties are better than cast iron, but the cast iron properties of this material is poor, the melting point is higher than other materials.
Machined surfaces and solidification knowledge
fine machining processing 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 fine machining is that complex castings can be cast.
the role of additives in the process of fine machining will no longer be limited to helping the shell quickly build up the wet strength, but also improve the development of its investment casting quality, the surface quality of the silica sol shell is good and its high temperature.
Machining process and technology
fine machining can be divided into upper and lower die methods, which can be completed through comprehensive processes such as planing, milling, etching, turning, and EDM. The size and pit shape of the fine machining are consistent with the edge of the product, mainly because the wax die is mainly used for industrial wax forming, so its melting point is not high and the hardness is not high when selecting, and the aluminum alloy material with relatively cheap and light weight is used as a mold.
Linhai Duer Machinery Co., Ltd. is a precision machinery parts supplier, Integrating R&d, manufacturing and sales. Located on the southeast coast of China in Zhejiang Province
Tel: +86-0576-85962939
Mobile phone:+ 86-18906571717
E-mail:yangtx@duerjx.com / yangtx@duerjx.com
