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當(dāng)材料被沖壓成形時(shí)，會(huì)變硬，不同的鋼材，變硬的程度不同。一般高強(qiáng)度低合金鋼只略有20MPa增加，不到10%。注意：雙相鋼的屈服強(qiáng)度有140MPa增加，增加了40%多！金屬在成形過(guò)程中，會(huì)變得完全不同，完全不像沖壓加工開始之前。
When the material is formed by stamping, it will harden, different steel, different degree of hardening. Generally high strength low alloy steel only slightly increased 20MPa, less than 10%. Note: the yield strength of 140MPa steel increases with the increase of more than 40%! In the process of forming, the metal will be completely different.
這些鋼材在受力后，屈服強(qiáng)度增加很多。材料較高的屈服應(yīng)力加上加工硬化，等于流動(dòng)應(yīng)力的大大增加。因此，開裂、回彈、起皺、工件尺寸、模具磨損、微焊接磨損等成為了高強(qiáng)鋼成型過(guò)
The yield strength of these steels increases with the stress. The higher yield stress of the material plus the work hardening is equal to the increase of the flow stress. Therefore, the cracking, rebound, wrinkling, workpiece size, die wear, micro welding wear and so on
經(jīng)過(guò)前一段時(shí)間的快速反彈，上周國(guó)內(nèi)鋼材市場(chǎng)價(jià)格漲幅明顯放緩，繼續(xù)上漲動(dòng)力減弱;在成交不暢的情況下，市場(chǎng)疲態(tài)漸現(xiàn)，加上期鋼市場(chǎng)的持弱偏弱震蕩，進(jìn)一步加重商家觀望心態(tài)，因此上周鋼價(jià)窄幅震蕩回落，供需雙方均有一定的觀望心態(tài)，因需求基本面受到南方雨水影響及商家在月底資金壓力再現(xiàn)影響，預(yù)計(jì)短期內(nèi)國(guó)內(nèi)鋼價(jià)還將繼續(xù)震蕩偏弱運(yùn)行為主。程中的問(wèn)題焦點(diǎn)。
After a quick rebound for a period of time before the last week, the domestic steel market price increase is slowing down, continue to rise in power weakened; poor turnover situation, the market weakness gradually, plus the steel market to weak weak shocks, further aggravating the business mentality, so last week, steel price shocks narrow down, both supply and demand a wait-and-see attitude, and influence by rain in the south of businesses in the end of the month due to financial pressure reproduction demand fundamentals, expected short-term domestic steel prices will continue to run the main weak shock. The focus of the problem.
濟(jì)南永亞鋼鐵貿(mào)易有限公司的,濟(jì)鋼一級(jí)代理提供技術(shù)支持，更多精彩內(nèi)容請(qǐng)進(jìn)入：http://m.jdsdmh.cn，我們會(huì)傾情為您解答。
Ji'nan YONGYA steel trade Co. Ltd., to provide technical support to Jinan level agents, more exciting content, please enter: http://m.jdsdmh.cn, we will love to answer your questions.