With the development of the times, there are more than 700000 kinds of aluminum alloy products, all of which are manufactured by CNC processing technology and widely used in construction, transportation, aerospace, industry, electronics, etc. Aluminum alloy is widely used in industrial products, because it has good physical properties, almost all kinds of welding methods can be used to weld aluminum and aluminum alloys. However, aluminum and aluminum alloys have different adaptability to various welding methods. Today, Nuoba will explain the five technologies of aluminum alloy processing and the five ways of aluminum alloy CNC processing.
Processing of aluminum alloy parts
1、 Five CNC processing technologies for aluminum alloy parts:
1. Machining of aluminum alloy parts
Also known as CNC processing, automatic lathe processing, CNC lathe processing, etc.
(1) Common machine tools use cars, milling, planing, drilling, grinding and other processing mold accessories, and then make necessary repairs to fitters to assemble various molds.
(2) The precision of mold parts is required to be high. It is difficult to ensure high processing precision only by using ordinary machine tools. Therefore, precision machine tools are required for processing.
(3) In order to make the processing of punch parts, especially punch with complex shape, concave hole and cavity more automatic, and the repair work of fitters more automatic, it is necessary to use CNC machine tools (such as three coordinate CNC milling machine, machining center, CNC grinding machine, etc.) to process the mold.
2. Stamping of aluminum alloy parts:
Punching refers to the use of a punch and a die to align sheets and slats The forming process for pipes and profiles to exert external force to cause plastic deformation or separation, so as to obtain workpieces (stamping parts) with required shape and size. Stamping part is to use the power of conventional or special stamping machine to make the sheet metal deform directly in the die, and then deform to obtain a certain shape Size and performance of product accessories production process. board. Die and equipment are the three major elements of stamping processing. Stamping is a processing method of metal cold deformation, so it is also called cold stamping or sheet metal stamping, abbreviated as stamping. This is a major metal plastic processing method.
3. Aluminum alloy parts precision casting processing:
Investment casting belongs to special casting. Parts obtained by this method generally do not need to be machined again. Such as investment casting, die casting, etc.
Fittings obtained by this method usually do not need to be machined. For example, investment casting, die casting, etc. Compared with traditional casting technology, precision casting is a kind of casting method. This method can obtain more accurate shape and improve the casting precision. The general method is: first, design and manufacture the mold according to the product requirements (with little or no allowance), cast wax to obtain the original wax mold by pouring, then repeatedly paint the wax mold, hard the shell, and dissolve the wax mold inside to obtain the mold cavity for dewaxing; Shell fired to achieve full strength; Metal materials for pouring; Clean the sand after shelling; High precision finished products can be obtained. Carry out heat treatment and cold processing according to product requirements.
4. Powder metallurgy processing of aluminum alloy parts:
Powder metallurgy is a technology to manufacture metal powder, and take metal powder as raw material, through mixing, molding and sintering, to manufacture materials or products. The technology of mixing metal powder with metal powder (sometimes a small amount of non-metallic powder is added) to form, sinter and make materials or products. There are two parts, namely:
(1) Manufacture of metal powder (including alloy powder, hereinafter referred to as "metal powder").
(2) Metal powder (sometimes a small amount of non-metallic powder is added) is mixed, shaped and sintered to make a material (called "powder metallurgy material") or product (called "powder metallurgy product").
5. Injection molding of aluminum alloy accessories:
The solid powder and organic binder are uniformly mixed. After granulation, they are injected into the mold cavity with an injection molding machine in the heating and plasticizing state (~150 ℃) for curing and forming. Then, the binder in the preform is removed by chemical or thermal decomposition methods, and the product is sintered and densified.
Processing of spare parts of aluminum alloy lathe
Five CNC machining methods for aluminum alloy parts:
Compared with traditional CNC processing technology, it has the characteristics of high precision, uniform organization, excellent performance, low production cost, etc. Its products are widely used in electronic information engineering, biomedical equipment, office equipment, automobiles, machinery, hardware, sports equipment, clocks and watches, weapons, aerospace and other industrial fields. How many methods are there for aluminum alloy CNC machining?
1. Aluminum alloy oxidation processing:
Because aluminum has strong corrosion resistance and is easy to be oxidized, the surface of aluminum products should be treated to increase the wear resistance and corrosivity of aluminum profiles.
2. Aluminum alloy extrusion forming:
The required product model is depicted through the mold, and the semi-finished aluminum is poured into the mold and extruded by the extruder.
Forging of aluminum alloy parts
3. Aluminum alloy casting forming:
The molten aluminum is used for the first process of aluminum product processing through casting technology to cast the required products.
4. Impurities from aluminum alloy melting:
The process of removing impurities in the smelting furnace can ensure better product performance.
5. Ingredient to improve product hardness:
Because aluminum itself is a relatively soft material, we need to add some other things to produce products with high hardness that we need.