Casting auto parts processing technology.

Casting is to pour molten metal into the casting cavity of a metal mold, and cool and condense after the product is produced and processed. It is very common in the processing of auto parts. In the automobile manufacturing process, cast iron parts are selected, which account for about 10% of the vehicle weight, such as cylinder blocks, gearboxes, steering gear housings, rear axle housings, brake drums, and various brackets. Sand molds are generally used Auto parts processing and manufacturing cast iron. The raw material of the sand mold is mainly sand, mixed with binder and water. The sand material needs to be strong enough to be molded into the required shape and to resist the erosion of hot iron without collapsing. In order to mold a cavity in the sand mold that conforms to the shape of the casting, it is first necessary to make a solid model of wood, called a wooden mold. The volume of molten iron will shrink after cooling. Therefore, the external dimensions of the wooden mold need to be increased according to the shrinkage rate on the basis of the original external dimensions of the casting, and the surface that needs to be turned should be thickened accordingly.

Auto parts processing nut forging auto parts processing technology.

Forging is widely used in the processing and manufacturing of auto parts. Forging is divided into free forging and solid die forging. Free forging is the process of forming a metal billet under impact or pressure by placing a metal billet on an anvil (called "forging"). The blanks of automobile gears and shafts are processed by free forging. Auto parts processing solid model forging is a processing method in which metal blanks are placed in a forging die and formed under impact or pressure. Forging a solid model is a bit like pressing dough into a biscuit shape in a mold. Compared with free forging, the steel produced by die forging has more complicated shapes and more accurate dimensions. Typical examples of automotive parts processing die forgings include: engine connecting rods and crankshafts, automotive front axles, steering knuckles, etc. Zhongshan Precision Parts Machining

Cold stamping auto parts processing technology.

Precision parts machining manufacturers use cold stamping parts for the processing of auto parts: engine oil pan, brake system floor, frame and most body parts. These parts are generally formed through processes such as punching, punching, deep drawing, bending, flanging, and trimming. In order to manufacture cold stamped parts, molds need to be prepared. The press mold is generally divided into two pieces, one is installed above the press and can slide up and down, and the other is installed and fixed under the press. During the processing of auto parts, the blank is placed between two stamping dies. When the upper and lower molds are closed, the stamping process is completed. The productivity of stamping processing is very high, and parts with complex shapes and high precision can be manufactured.

Metal turning and auto parts processing technology.

Automobile parts processing Metal turning processing is to turn metal blanks layer by layer with tools; a processing method to obtain the required shape, size and surface roughness of steel parts. Metal turning includes two methods: locksmithing and mechanical processing-locksmiths are turning by hand tools, which are flexible and convenient in operation, and are widely used for assembly and repair. Machining is the use of machine tools to complete turning processing, including: turning, planing, milling, drilling and grinding.

1: Turning: Turning is the process of machining steel parts on a lathe with a turning tool. The lathe is suitable for turning various rotating surfaces, such as inner and outer cylindrical or conical surfaces, as well as for turning end faces. Many axle parts and gear blanks are processed on lathes. Mechanical precision parts processing

2: Planing: Planing is the process of processing steel parts with a planer. The planer is suitable for processing horizontal planes, vertical planes, inclined planes and grooves. The cylinder block and cylinder head of the automobile, the transmission box and the cover plate with a planer are all processed by a planer.

3: Milling: Milling is the process of processing steel with a milling cutter on a milling machine. The milling machine can process inclined surfaces, grooves, and even gears and curved surfaces. Old milling machines are widely used in the processing of auto parts. The molds used for cold stamping car bodies are all milled. The CNC milling machine can process very complex shapes of steel and is the main machine tool for modern machining.

4: Drilling and boring: Drilling and boring are the main turning methods for machining holes.

5: Grinding: Grinding is the process of processing steel with a grinding wheel on a grinder. Grinding is a finishing method, which can obtain higher steel precision and roughness, and can also be ground.