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When using metal type cutting, the following factors must be considered
2024/01/22
In ancient times, China, India, Babylon, Egypt, Greece and Rome had cut weapons, sacrificial objects, works of art and household utensils. Early castings were made of gold, silver, copper and their alloys. The Bronze Age is a glorious page in the history of human civilization; later cast iron pieces appeared. Iron castings were widely used in China as early as the Warring States period, and the technical tradition has a long history.
2024/01/22
The cutting performance of metal includes: ① fluidity, the ability of liquid metal to fill the mold; ② shrinkage tendency, large volume shrinkage from liquid to solid, easy to produce defects such as shrinkage cavity, and large linear dimensional shrinkage, which affects the final dimensional accuracy of castings; ③ hot cracking tendency, some metals and alloys are prone to cracks and segregation tendency in the cutting process.
2024/01/22
Mold (liquid metal into a solid casting container) preparation, mold according to the materials used can be divided into sand, metal, ceramic, mud, graphite, etc., according to the number of use can be divided into one-time, semi-permanent and permanent, mold preparation is the main factor affecting the quality of castings
Uniform wall thickness, and 3~4mm thin-walled castings are appropriate
2024/01/22
Sand cutting adaptability is very wide, small pieces, large pieces, simple pieces, complex pieces, single pieces, large quantities can be used. Sand mold is more refractory than metal mold, so materials with higher melting points such as copper alloys and ferrous metals are also used in this process. Sand cutting mold, general wood production, commonly known as wood mold.
2024/01/22
Gravity cutting
It is widely used in the production of various non-ferrous castings, but metal mold cutting also has the disadvantages of low metal utilization rate, difficult pouring of thin-walled complex castings, and low relative pressure cutting of casting tissue density.
The adaptability of sand cutting is very wide
2024/01/22
Sand cutting mold, general wood production, commonly known as wood mold. In order to improve the dimensional accuracy is higher, also often use longer life of aluminum alloy mold or resin mold. Although the price has increased, but still much cheaper than the metal cutting mold, in the small batch and large production, the price advantage is particularly prominent.
Metal Type Cutting
