【正文】 ill resulL in waste generation and mold damage. 2. Die Die Life of Die Die Life of a mold uiaLerial properties, chemical posiLion, Ktructure, hardnDst。 and prehensive rGfleclion of meLallurgical quality, Amonj? ihem, the niaLerial propertiofl and heal IrcaLmL affcct the quality of the mcsL obviou?i. Mold nifileriiil i on Lfit? I r[t[jac:t die 丨 glcf?ail. [f Lht* w(Ukp 1 ec:e, UK trig a difTRrt?nL 【 i_r)ld ni?iU?rial of bend i ng tss the tnst Ik : The? 9Mn2V rrvEiLRrial, 1 i f f， r fi mi 11 。 w Ci] I?M。 V nUri ding, thp 1. i nf 叩 Lu 40 ml 11 ion. Therefore, the choice nf materia丄 s， the baLch size should be based nn wnrkpiece, ralinnal use of mold maLeriaiR. The hardness of Lhe die parLs to Die Life a great impacl. But noL the higher hardness, longer die life. This is because Lhe hardness and strength? Loughness and abrasion resi stance are closely related. Some die demands of high hardness, long life. Such as Lhe use of TIO steel dies, hardness 54 “ nRIffiC, only washod IhoQsands of liimcs a burr on Lhe workpicco ?rcaL. If the haidnesi] to fiO ? 641 [RC? the grinding life of up to 2 Lo 3 million. However, if continue? to h?irdne?。, 「 .r過 ctuje f]ct:urs： iyr. 舊〔 lifi hat?thoul[J rinl bf3 Inn high, an lhe dif? mariLirfic:Luting using Ci! ； ?MoV fitS 621 IRC ha?39。dnftsKj gt?neral 11 \39。? 239。A rrii 1 ] ion, invalid fnim ni chipiing find ing, i?nti i T tht? hardness down In 54 ！ iR[lHCi life expectancy increased La 5 ? 60 000? but decreased Ln 50 ? fi3IIRC hardness apj?eai39。s easy hlunL Lhe die edge phennmenon. Thus, mold hardness must be based on maLei ial properLies and failure mode?。 may be. Should enable Lhe hardness, slrengLh, toughness and weai39。 resistance, res is Lance to fatigue strength needed to achieve a pai Licular stamping process the best maLch. 3. The =。urracc of the mold heat. Ire a linen t Ln strmgLh Lhe quali Ly and impacl cm life Mnid beaL Lht? r](177。39。t? am] quiil iLy cl】 i「 t? of Lhe uic 1 d a grt?a!. itrtpact.. Pracl i Cf? liiat iHr d lp [m r t k n f [:h171。 riui?nf39。hi fig f] [5。(_nrL 丨 fn and hhtI y f laciLire during use, while the me Lai lurgical and rriiiier EsiIk qudlityt fing qua丄 ity， mnld sLuucLure and process related, bui relaLed mnre lo die nf heal LreaLmeni Acccrdin? Ln KtalisLical anaiysis nf failure causes of mnld, heal LreaLment failure due to improper accounting for more Lhan ?0%. Practice shows thai Lhe mold maLerial must be acpanied by high heaL process properly, can really play a material39。s poLenLial Parts surface hardening mold wnrk purpose is to obtain Lhe offcci of external hard tough insido, so be hardness, wear resi?ilancc, tnu??ihnesfi, good rosisLancG to faLiRuc with. Many ways Lo die surface hardening, surface LrcaLmGnt technology of new techtiolof?ics developed rapidly. Trt addi tio「 ] Ln I?i iarid i,on ni brvr[(lf? ninhiunij Viinadiuin permeabj I ity, hard chromfa pliiLf?d iind .?park Lhs chf?micEi】 vapor dp[Ki??i Lion ((39。VfJ) ?nd phy$] ca] vapor dRpr?：丨 tin?i (PVD) ?riidutil 1 y Eidnfjl?d. By CVD and PVD Irealment, mold surface covered wl Lh super—hard material? such as TiC， TiNp elc.. High hardness, wear res istance, corrosion resistance, adhesinn is very good, can improve Lhe die life several Limes to several Limes. 4. Manufacturing precision of Lhe die parts nf die life Precision dit manufacluring and life in iL irt particular, mold surface roughness on the mold a grcaL ImpacL. IF using Ci39。12MoV slccl blanking die, if the? surfacc roughness value E = L 6 m, its life span is about 30, 000. Such as polished by Lhe [iInri, sLirfacf ifughri??valut? R = f), 4 m, 1 i oaji be i to 4? mill inn. Therefnrej the working parLi nr mold the general ,i gn through .R:rindingj grindingp polishing and other finishing and fine processing. H. Olher aspects of Lhe 丄 miuficL nf die life (1) Press Lhe accuracy is noL high, buI also easy lo make die damage. (2) die in Lhe press or not installed properly and Lhe operator39。s Lechnical level, on Lhe Lonl Life also ?really? affee Led. ⑶ dies in the custody and mairUenance of good and bad, and Lhe use of lubricant condition also afrccLs mold life, 6」 Cnncluslori In AC LLial prndu{:Lif}r], d i hs for rar? of non?nnranal and tenarn Bul wheni th? d i? plale was fnund in i rrpgular we?ar, we a] ?iiudy for lhe problems summarized. Because of a ld die, frnm Lhe design? manufacLure, assenib丄 y， mispinning and insLalialion and use, all spenL many hnurs, while lhe ex die』 die material used, mostly highqitality alloy steel. Therefore, Lhe die cost is relatively high. 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