Casting requires the use of molds in the production process

Casting requires the use of molds in the production process. The molds are divided into wooden molds, aluminum molds, plastic molds, foam lost foam, plaster molds, etc. The main introduction is the wooden mold:

Wooden molds are mainly made of wood in the case of single-piece small batch production. Wooden molds made of wood have the advantages of light weight, short production cycle, and easy processing and shaping. The wooden mold shrinks when the water evaporates and expands after absorbing moisture. The drying shrinkage and moisture expansion in all directions are very different, so the wooden mold is easily deformed. The way to reduce the deformation of the wood mold is to dry the wood. In addition, a lot of wood is used for layering and bonding on the wood formwork structure. The higher the wood mold requirements, the more splicing layers. This reduces the amount of deformation.

The woods commonly used in wood molds are:

1) Korean pine, commonly known as Northeast pine, is the basic material for making ordinary wood molds. It has straight texture, fine structure, soft wood and easy processing, deformation processing, small deformation, but large shrinkage.

2) Chinese fir, which is used to make large wooden molds that are not commonly used. The grain is straight, the structure is slightly rough, the wood is soft, but the knots are hard.

3) Ginkgo, commonly known as the self-growing fruit tree, is a small wood mold and various work pieces, with high manufacturing requirements.

4) Teak is an excellent material for making wooden molds, but it has few sources and is expensive. It is only used for high demand and small wooden formwork. The texture is straight but not straight, the structure is slightly thick, the material is strong, the fiber is tough, and it is oily. , Easy to process, not easy to crack and deform.

Mold manufacturers choose suitable wood according to the different needs of customers’ products, and produce castings that meet customer requirements. Every casting is the result of the hard work and sweat of the caster.

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