磨削对模具寿命的影响（Influence of grinding on the life of die）.docVIP

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磨削对模具寿命的影响（Influence of grinding on the life of die）.doc

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磨削对模具寿命的影响（Influence of grinding on the life of die）

磨削对模具寿命的影响（Influence of grinding on the life of die） The impact of grinding on the die life,.Txt a little smart, see the world a little confused. A blind date is called direct distribution, love, throwing Hydrangea warrior was rigging. Not ready, please do not start, do not have the ability, please do not promise. Love this thing, didnt get probably regret, dont have regret, but if you can only regret the right stuff. Chinas mold industry development today really has made considerable progress, but large, precise and long-life mold still with foreign advanced level has a large gap, the die life and is associated with the failure to talk about a bit opinion. The 1. China and foreign countries in the comparison of the die life Serial number, mold category, domestic level, foreign level 1 press mold: Die casting zinc tin in 20-30 million 100-300 million 200 thousand times 1 million times in aluminum die-casting mold Copper die casting 10 thousand times, 100 thousand times Black metal die casting 1500 times, 1-2 times 2 plastic injection mould: Non quenched steel mould 10-30 times, 10-60 times Quenched steel mould 50-100 times, 200-500 times 3 die: Alloy steel die, total life of 100-400 times, 500-1000 times Carbide die, total life of 1-2 times, 2-3 times 100-300 times / sharpening once 500-1000 times / sharpening once 4 forging die: Ordinary forging die 10 thousand times or so 25 thousand times Precision forging die 0.5-1 times, 1-1.5 times 5 glass mold 10-30 times, 30-60 times The basic form of the 2. mold damage In order to improve the life of the die, the failure modes of the die are analyzed, including plastic deformation, wear and tear, fatigue, cold and hot fatigue, fracture and cracking, corrosion. In the course of service, the mold may appear many kinds of damage forms at the same time, each kind of damage mutually seepage, mutually promotion, each development, until the product which produces with the mold is the waste product, then the mold invalidation. To i