Email format error
Email cannot be empty
Email already exists
6-20 characters(letters plus numbers only)
The password is inconsistent
Email format error
Email cannot be empty
Email does not exist
6-20 characters(letters plus numbers only)
The password is inconsistent
Sand casting is a sand casting process used to manufacture large components such as gray cast iron, ductile iron, stainless steel, and other types of steel. The main steps include painting, molding, core making, molding, melting and pouring, cleaning, etc.
The basic raw materials of ordinary sand casting are foundry sand and sand binder. The outer sand mold used in sand casting is divided into three types: clay wet sand mold, clay dry sand mold, and chemical hardened sand mold according to the binder used in the molding sand and the way of building its strength.
The so-called machining allowance is the surface that needs to be cut on the casting. A certain machining allowance should be reserved in advance, and its size depends on many factors such as the type of casting alloy, the molding method, the size of the casting, and the position of the machined surface in the casting mold.
In order to make the pattern easy to take out from the mold, the slope added to the vertical wall perpendicular to the parting surface is called the draft slope.
In order to prevent the casting from producing stress and cracks at the connection and corner of the wall, and to prevent the sharp corners of the mold from being damaged and producing blisters, when designing the casting, the connection and corner parts of the casting wall should be designed with rounded corners.
In order to ensure the positioning, fixation, and exhaust of the core in the mold, the core head should be designed for both the pattern and the core.
Due to the cooling shrinkage of the casting after pouring, this part of the shrinkage dimension should be added when making the pattern.