Characteristics and main materials of wooden molds in castings

Characteristics and main materials of wooden molds in castings

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

Wooden molds are mainly made of wood in the case of single piece small batch production. Wooden molds made from wood have advantages such as light weight, short production cycle, and easy processing and shaping. Wooden molds contract when water evaporates and expand after absorbing moisture. The drying shrinkage and water expansion in various directions differ greatly, so wooden molds are prone to deformation. The method to reduce wood mold deformation is to dry the wood. In addition, a lot of wood was used for layering and bonding on the wooden formwork structure. The higher the requirements for wooden formwork, the more layers of splicing. This reduces the amount of deformation.

The commonly used wood for wooden formwork includes:

1) Red pine, commonly known as Northeast pine, is the basic material for making ordinary wood molds. It has a straight texture, fine structure, soft and easy to process wood, with small deformation but high shrinkage.

2) Cedar wood is used to make large wooden molds that are not commonly used. The texture is straight and the structure is slightly rough. The wood is soft, but the knots are hard.

3) Ginkgo biloba, commonly known as a self growing fruit tree, is a small wooden model and various living parts with high manufacturing requirements.

4) Teak is a superior material for making wooden molds, but it comes from limited sources and is expensive. It is only used for high demand and small wooden molds. The texture is straight but not straight, the structure is slightly coarse, the material is sturdy, the fibers are tough, and oil is present., Easy to process, less prone to cracking and deformation.

Mold manufacturers choose suitable wood according to the different needs of customer products and produce castings that meet customer requirements. Every casting embodies the hard work and sweat of the casting people.

Precision machining