Precision casting manufacturers analyze the impact of materials in precision casting

This has been done before, and there is something else besides this, so today we are going to change the subject, to explain some of the aspects of precision casting, so that we can learn more about it, and then deepen and broaden it, and store it up for later use. Precision casting, it can be called investment casting, it is also a casting method, but also a more use of a kind, so its own is a must have the advantages, the first is:

The standard precision of the casting is high, and the surface roughness is good, then the machining allowance of the casting can be greatly reduced, and the production cost can be reduced.

Can produce more complex shape casting, the use of a variety of alloys, basically unfettered.

Good flexibility of production, and good adaptability, can not only small batch production, but also large production.

In precision casting, in addition to the primary equipment, also need to use some auxiliary equipment, the primary are: diesel tank, air compressor, dehumidifier, temperature measuring instrument and water system. The metal materials used are stainless steel, copper alloy, titanium alloy, etc.

In precision casting, the quality of the raw materials used will affect the quality of the casting. Therefore, the material is also quite important, we should be satisfied with the attention, so the following small make up to discuss the specific, it can be divided into several aspects, specifically:

(1) metal materials

Metal materials, which are mainly from outsourcing materials, waste castings and pouring risers. Because the outsourcing materials are generally loose, which is very simple to mix with other materials, so it is generally not selected. In addition, the purchased materials, to its chemical composition analysis, in order to be able to comment on the material.

(2) the mold material

The functional guidelines include: melting temperature and condensation temperature range, heat resistance, thermal expansion rate and shortening rate, strength, hardness, viscosity, fluidity, coating and ash content, etc. This function is difficult to check one by one, but the most important one is the reduction rate, which must be checked because it affects the standard precision of the casting and the quality of the mold.

(3) silicon sol

Its primary parameters are: SiO2 content, density, Na2O content, PH value, kinematic viscosity and colloid particle diameter, etc., they will affect the shell strength, coating and other aspects, so it is also very important, can not be ignored.