Aluminum extrusion industry mould manufacturing is also determines the quality and the service life of one of the key factors. Because the aluminum extrusion industry mold has a series of characteristic, therefore puts forward some special requirements on aluminum mold molding technology:

(1) due to the aluminum alloy extrusion mold working conditions is very bad, need to withstand high temperature and high pressure in the extrusion process, the effect of high friction, therefore, requires the use of high-strength alloy steel, and these steel smelting, casting, forging, heat treatment, machining, mechanical processing and surface treatment process is very complex, it bring a series of difficult mould processing.

(2) in order to improve the service life of the workers die and to ensure the quality of the surface of the product, request cavity work with the roughness of 0.8 to 0.8 mu m, mold surface roughness under 1.6 mu m, therefore, need to be taken when molding special polishing process and polishing equipment.

(3) because of the extrusion product to develop in the direction of high, refined, sharp, some profiles and pipe wall thickness requirements to around 0.5 mm, its extrusion products tolerance requirement to + / - 0.05 mm, in order to squeeze the ultra-high precision products, requirements of die & mould manufacturing accuracy of 0.01 mm, mining collapse of traditional process cannot be made, therefore, request update technology and adopts the new type of special equipment.

(4) the aluminum section is very complex, especially, the precision of thin-walled aluminum and empty XinBi porous plate aluminum extrusions, require the use of special structure of extrusion die, often in a mold to open at the same time have more than one profile hole cavity, the thickness of each section change sharply, the related dimension complex, arc corner lot, it brings to the mold processing and heat treatment of a lot of trouble.

 (5) aluminum extrusion product variety, small batch, frequent changing of the mold, and mold of strong adaptability, therefore, request increase the productivity of the moulding, try to shorten the molding cycle, can quickly change the moulding process, to find the right processing of qualified according to the drawing die, reduce the workload of repairing mold to a minimum.

 (6) with aluminum alloy extruding products increasingly wide application range, specifications range is very wide, therefore, have a light to several kilograms of dimension is 100 mm x 25 mm small molds, also have weighed more than 2000 kg of dimension is 1800 mm * 450 mm mold. Has light to a few kilograms of dimension of 65 mm x 800 mm small crowded finale, also have weighed more than 100 t shape size is 2500 mm x 2600 mm large container. Workers of the specifications of the mold and large differences in quality, require the use of different manufacturing methods and procedures, using different processing equipment.

 (7) there are many types of extrusion industry mould, complicated structure, assembly accuracy requirement is very high, in addition to ask for special processing methods and the use of special equipment, still need to use special fixtures and cutting tools and special heat treatment method.

 (8) in order to improve the quality of the mould and the service life, in addition to choose reasonable materials and optimization design, still need to adopt the best heat treatment process and surface strengthening treatment technology, in order to obtain the mold hardness of moderate and high surface quality, shape for the extremely complex difficult extrusion products is especially important and special structure of the mould.

 Processing technology of extrusion die, therefore, is little different from the general mechanical manufacturing process, but a special technical difficulty involve is very wide. To produce high quality and high service life of die, in addition to the selection and preparation of high-quality mold material, still need to make reasonable manufacture process, processing technology, heat treatment and surface treatment process.