A variety of forging process dynamic chart: long insight! Metal forming methods


Aluminum die casting (note that aluminum die casting is not a generic term for working pressure casting) is a metal forging process that has the advantage of increasing the high pressure on the metal that has been removed with the help of a mold cavity. The die is usually made of a harder aluminum alloy, and the process is somewhat similar to injection molding.

Sand casting is the production of molds from sand. Sand casting involves placing a solid model of the vacuum casting finished part or a solid wooden model (look-alike) in the sand, then spreading the sand on the look-alike Sunday, and removing the look-alike after unboxing the sand to produce the mold. In order to better remove the solid model before casting metal, the casting mold should be made in 2 or better several parts; during the casting mold making process, be sure to empty the holes for casting metal into the mold and exhaust air holes to generate the pouring system software. The mold is maintained for a moderate period of time after pouring the metal in liquid form until the metal has solidified. When the part is removed, the mold is destroyed and a new mold must be made for each cast iron part.

Vanishing mold casting, also known as lost wax casting, includes the process of pressing wax, repairing wax, grouping trees, dipping, melting wax, casting metal liquid and post-treatment process. Lost wax casting is to use wax to make the wax mold of the part to be built, and then the wax mold is coated with sand slurry, which is the clay mold. After the clay mold dried, in the firing into the ceramic mold. After firing, the wax mold all melts and flows out, leaving only the pottery mold. Generally the clay mold is left when the pouring mouth, and then from the pouring mouth into the molten metal, refrigeration, the parts needed to be made.

Free forging is the calcination method to get cast steel parts by using the die shell to shape the embryo on the special type free forging machine and equipment. According to the different machines and equipment, free forging is divided into free forging on the hammer, crank press die forging, flat forging machine free forging, friction press die forging, etc. Roll forging is the plastic deformation of raw materials under the effect of a pair of rotating die in the opposite direction to obtain the required cast steel parts or forging billet plastic forming process. It is a unique way of forming cold rolling (longitudinal rolling).

Calcining is a processing method that uses forging equipment to apply pressure to metal blanks to cause plastic deformation to obtain cast steel parts with certain physical properties, certain forms and specifications, one of the two components of casting (calcining and stamping process). According to the calcination can remove the metal in the melting process formed in the cast state loose and other shortcomings, to enhance the external economic organization, and at the same time because of the preservation of the perfect metal streamline, the physical properties of cast steel parts are generally better than the same material castings. About machinery and equipment in the high load, work in the standard is not optimistic about the main parts, in addition to the appearance of the simpler can use cold-rolled furniture plate, aluminum or welded parts, more than the choice of cast steel parts.

Cold rolling, also known as injection molding, refers to the entire process of shaping the metal ingot according to a pair of rollers. If the temperature of the metal exceeds its plastic deformation temperature during injection molding, then this process is called "hot tying", otherwise it is called "cold rolled steel". Injection molding is the most frequently used method in metal processing.

The essence of working pressure casting is to make liquid or semi-liquid metal fill the aluminum die casting mold (die casting mold) at a high rate under the action of high pressure, and to get the casting by forming and condensing under the working pressure.

Gravity casting is a casting method in which liquid metal is filled with a casting mold and condensed into a casting under low voltage vapor efficacy. Gravity casting was first used in the production of aluminum alloy castings, but has since been expanded to include copper, iron and steel castings with high melting points.

Extrusion casting is a technical and method of introducing liquid metal into a casting mold that runs at high speed, so that the metal liquid fills the casting mold and produces castings under the effect of inertial force. Extrusion casting commonly used casting molds, based on the casting look, specifications and manufacturing large quantities are not the same, can be used non-metallic type (such as sand mold, shell type or sand casting shell type), metal type or in the metal type within the layer of architectural coatings or resin sand casting layer of the casting mold.

Vanishing die casting is similar to the casting specifications style of paraffin or foam solid model bonding electric capacity solid model clusters, painted with fire-resistant architectural coatings and drying treatment, buried in dry quartz sand vibration modeling design, pouring under negative pressure, so that the solid model vaporization, liquid metal occupies the solid model parts, condensing refrigeration to produce castings of new casting method. Disappearing mold casting is a new technology new process with nearly no margin and precise forming. The process does not use dental model, no clinical diagnostic surface, no sand core, so the casting has no burrs, burrs and pulling mold inclination, and reduces the size deviation because of the core composition.

Extrusion casting, also known as liquid free forging, is a method of making molten metal or semi-solid aluminum alloy, which is immediately introduced into the deposited homework mold shell, followed by closing the mold shell to cause filling fluidity, arriving at the outside of the product, and then applying high pressure to cause plastic deformation of the condensed metal (housing), and the uncondensed metal assumes isostatic pressure, while producing high pressure condensation, and finally obtaining the product or embryo, above for There is also indirect extrusion casting, which means that the molten metal or semi-solid aluminum alloy is introduced into the sealed mold according to the convex mold, and the pressure is applied so that the crystals are condensed and formed under the working pressure, and the final product or embryo is obtained.

Continuous casting is a casting method in which the liquid metal is continuously poured into the crystallizer at one end and continuously pulled out from the other end to form the raw material using a continuous casting machine with a full line.

Pulling is a plastic processing method that uses an external force in front of the pulled metal to drag the metal embryo out of a mold hole smaller than the cross section of the embryo to obtain a finished product of the corresponding form and size. It is also called cold drawing or cold pulling because pulling is mostly carried out in the hot state.

Stamping is a forming process that relies on a press and a die to increase the external force on furniture plates, amorphous strips, pipe fittings and aluminum profiles to cause plastic deformation or separation to obtain a product workpiece (hardware stamping) of the required form and size.

Metal Injection Molding (MetalInjectionMolding, commonly known as MIM) is a new type of powder metallurgy from the field of plastic injection molding near net forming technology, as we all know, plastic injection molding technology is cheap to produce a variety of complex styles of products, but plastic products are not high compressive strength, in order to better improve its characteristics, can be added to the Plastic with metal or porcelain powder-like to obtain a higher compressive strength, good wear resistance of the product. In recent years, this idea has evolved to maximize the composition of the solid particles while completely removing the adhesive in the subsequent calcination process and densifying the forming blanks. This new method of powder metallurgy forming is called metal infusion forming.

Milling is the CNC lathe machining is a part of mechanical equipment processing. The key to CNC lathe machining is to carry out milling processing on the rotating product with a traveling tool. CNC lathe is mainly used for processing shafts, discs, sets and other products with rotating surface workpiece, which is a kind of CNC lathe processing widely used in mechanical equipment and electromechanical maintenance processing plant. Milling processing is in the lathe side of the use of product workpiece relative to the rotation of CNC inserts to complete the drilling process of the product method. The key to the drilling energy of the milling process is given by the product workpiece rather than the CNC inserts. Milling is the most basic and common drilling method and has a very critical influence in manufacturing. Milling is suitable for processing rotating surface, most of the products with rotating surface can be processed by milling method, such as internal and external round surface, internal and external taper surface, internal hole, pipe groove, external thread and rotating forming surface, etc. The commonly used CNC inserts are mainly lathe turning tools.

Cutting processing milling is the embryo fixed immobile, with high-speed running turning tool in the blank room to go on the knife, cut out the required form and characteristics. Traditional type cutting is more often used to mill wheelhouse and groove and other simple appearance design/features. CNC machine tools can carry out complex design and feature processing. Milling and boring core can carry out three-axis or multi-axis milling and boring processing, used for processing, mold shell, fixture, mold sleeve, thick-walled complex bevel, human nose prosthesis, leaf surface, etc.. In the selection of CNC machining center chipping processing content, should make full use of the advantages and leading role of CNC machine tools.

Drilling processing is to use the blade to the product workpiece for the level of relativity parallel line linear motion of the drilling processing method, mainly used in the appearance of the parts design processing. The accuracy of drilling processing is IT9~IT7, and the external roughness Ra is 6.3~1.6um.

Cutting processing grinding is the processing method to remove unnecessary raw materials from the product workpiece by using wear-resistant materials and molds. Cutting processing is one of the more commonly used drilling processing methods.

The selective laser melts in a trough covered with metal powder, and a computer system controls a high-powered carbon dioxide laser that selectively cuts through the powdered metal surface. Where the laser is located, the powdered metal on the surface is completely melted and bonded together, while the unlit areas remain in powdered condition. The entire process is carried out in a sealed chamber filled with rare gases.

Selective laser calcination is an SLS method that uses an infrared laser generator as the electrical energy source, and the raw materials used in the application of the modeling design are mostly powdered materials. Processing, the first powder heated to a temperature slightly less than its melting point, followed by the effect of scraping wooden sticks will be powder flat; laser in the computer system control based on the content of the hierarchical cross-sectional information to complete the selective Z calcination, a layer to carry out after the next layer of calcination, all calcined after the removal of unnecessary powder, then you can get a calcined good parts. At the present stage, the raw materials for the perfect processing are wax powder and plastic powder, and the process of calcination with metal powder or porcelain powder is still under scientific research.


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