Ningbo VESTA Industry Co., Ltd.
Die Casting Parts,Steel Die Casting,Copper Die Casting,Aluminium Die Casting
The casting is a metal human control of hot workingprocess relatively early, has a history of about 6000 years.In early 1700 BC to1000 China has entered into casting heyday era,the technology has reached avery high level.
the material to be casting is usually solidbut heated to a liquid metal (copper, iron, aluminum, lead, tin, etc.), andmold materials can be sand, metal and even ceramics. In response to differentrequirements, the use of the method will be different.
Casting blank is almost forming, whichachieves the goal of free machining or less processing, reduces cost andreduces production time to a certain extent. Casting is one of the basicprocesses in modern equipment manufacturing industry.
(1) Sand casting:
Using sand as the mold material, also knownas sand casting, foundry, including wet sand, dry sand and chemical hardeningsand 3, but not all are available in sand casting. Advantage is low cost,because of the use of the mold sand can be reused; drawback is the moldmanufacture time-consuming, repeated use casting model is not possible. Todamage can be achieved after the finished product.
(2) Special Casting Process:
According to the special casting moldingmaterials can be divided into natural mineral sand as the main materials (suchas casting, mud casting, shell casting, vacuum casting, mold casting, ceramicmold casting, special casting and metal) as the main cast materials (such asmetal casting, pressure die casting, continuous casting, low pressure casting,centrifugal casting, etc.
2.1 Metal mold casting method: using highmelting point is the raw material made of metal mold. The subdivision forgravity casting, low pressure casting and pressure casting method. By castingthe melting point can be cast metal has also been limited.
2.2 Lost wax casting method: this methodcan for membrane casting and solid casting. First the object copy the requiredcasting wax, and then dipped into ceramic containing (or silica sol) in thepool and stay dry, the wax replica covered with a layer of ceramic membrane,repeating the steps until the outer membrane is sufficient to support thecasting process (about 1/4 inch 1/8 inch), wax melting in the mold, and out ofthe mould. Then many times to enhance the mold temperature, the hardness can beused to rear casting.
Based on different casting raw material,we`vesteel die casting,copper alloy die casting and aluminium alloy die casting.
(1)The mold preparation (liquid metal becomea solid container for casting ) according to the material used can be dividedinto sand, metal, ceramic, clay, graphite, according to the frequency of usecan be divided into single type, semi permanent and permanent mold preparation,quality is the main factor affecting the quality of castings;
(2) The melting and casting;:casting metal(alloy) mainly include all kinds of cast iron, cast steel and casting ofnonferrous metal and alloy castings;
(3) The processing and inspection: castingprocessing including removal of the core and the casting surface removal offoreign body, riser, shovel thorn and sanding fash protrusions and heattreatment, plastic. Anti rust and rough machining.