（1) with advanced instrumentation to detect mold online and offline dimensional accuracy, hardness and surface roughness. Acceptance of mold detection register, people library shelves, polished die hole collar work out with the use and diversion mode, profiles mold, die pad assembly inspection, confirmation sent to the machine when heated;

(2) the former machine tool and mold heating temperature: squeeze tube: 400 ~ 450 ℃, pressure pads: 350 ℃, die pad: 350 ~ 400 ℃, flat die: 450 ~ 470 ℃, shunt-mode: 460 to 480 ℃, holding time is calculated according to the mold thickness (l.5 ~ 2 分钟 / mm);

(3) heating the mold at the time of the furnace must not exceed 10 hours, the time is too long, with a die hole susceptible to corrosion or deformation of the work;

(4) In the beginning stages of extrusion of aluminum profiles, adding pressure to be slow, because the impact is likely to lead to blocking mode. If blocking mode, the need to immediately shut down to prevent crushed die hole work with;

(5) mold unloading machine, add one base slot and leave to cool to cook at 150 ~ 180 ℃, because the mold at high temperature alkali cooking, easy to heat shock cracking. And should eclipse the use of advanced cleaning method to recover save lye, shorten the etching time and achieve pollution-free cleaning;

(6) work in repair mode for split-mold assembly, the application of copper rod gentlyBritainto fight, do not allow big hammer hit, avoid excessive force, shock rotten mold;

(7) the need to die before the die hole nitride working with carefully polished to a surface roughness Ra0.8 ~ 0.4μm;

 (8) requirements before nitriding mold clean, does not allow oil into the furnace; nitriding process should be reasonable (depending on device characteristics and the mold material), surface hardness after nitriding is HV900 ~ 1200, the nitride layer over thick, excellent cause nitride layer peeling. A mold generally allow nitride 3 to 5 times; complex high-power mode without teeth radiator sections nitriding process;

 (9) for the new mold of old products, stick mold, pipe mold tryout without directly by nitriding treatment; profiles of new products and complex mold must pass in order to tryout after nitriding;

 (10) The new die tryout after passing up to 10 extrusion ingot nitriding should unloading machine, avoid working with pull-out groove; not excessive production between the two nitride, generally flat die 60 ~ 100 tablets, split mold 40 to the ingot 80 is appropriate, too much will be pulled through the nitride layer.

After the mold (11) after use polish, oiled people database custody.