To put it simply, the metallurgical industry (melting)

1) Tapping temperature: The stainless steel plate is higher than the carbon steel;

2) Liquidity of molten steel: stainless steel plate is worse than carbon steel;

3) Molten steel reducibility: stainless steel plate is more susceptible to air oxidation than carbon steel;

4) Condensation method: stainless steel plate is viscous coagulation, carbon steel is sequential coagulation.

For sand mold Dongguan precision castings, many manufacturing factories should give full play to their expertise and choose excellent technical modeling design and core-making methods. The old-style shock-type or shock-pressure molding machine production line has insufficient output rate, high labor efficiency and high noise, and is not suitable for many manufacturing regulations. Therefore, it should be gradually updated in many aspects.

For small and medium-sized castings, the production line of the boxless high pressure molding machine that can be treated by standard Chinese medicine or vertical Chinese medicine can be selected, and the solid shape design has high productivity and small area; for medium parts, various boxed high pressure molding machines can be used. Compression molding machine production line and air-punch molding design line are integrated into the requirements of rapid, high-precision molding design and production line. Core-making methods can be high-efficiency core-making methods such as cold core boxes, hot core boxes, and shell cores. Medium-level large-volume large and medium-sized castings can consider the use of epoxy resin self-hardening sand for modeling design and core making.

Nowadays, among the precision castings produced by precision steel casting enterprises, about 65 to 75% of the precision castings are produced with sand molds, and about 75% of them are produced with clay sand molds. Sand precision castings often account for the majority because of the low cost of gas and simple steps. Therefore, all the precision castings of auto parts and accessories are attributed to sand precision castings.

Bottom pressure precision castings, aluminum die castings, suction filtration precision castings and other casting methods are not easy to produce and manufacture, the key is that the product cost is expensive.

For the super-heavy dewaxing casting of small batch production of parts, hand-made modeling design is still the key method. Hand-made modeling design can incorporate a variety of complicated regulations, which is more flexible, and does not require many processing technology weapons and equipment. Can use sodium silicate sand mold, vrh method sodium silicate sand mold, organic chemical ester sodium silicate self-curing sand mold, clay dry mold, epoxy resin self-curing sand mold and concrete sand mold, etc.; for the production of super heavy precision castings, the bottom The pit shape design method is low-cost and can be completed and put into production quickly. Multi-box design and split-box design are more suitable for mass production or long-term production of shaped products. Although the initial project investment of abrasive tools and sandboxes is high, it can save comprehensive man-hours for modeling design and improve product quality. Compensation at the level.