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當材料被沖壓成形時，會變硬，不同的鋼材，變硬的程度不同。一般高強度低合金鋼只略有20MPa增加，不到10%。注意：雙相鋼的屈服強度有140MPa增加，增加了40%多！金屬在成形過程中，會變得完全不同，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，屈服強度增加很多。材料較高的屈服應力加上加工硬化，等于流動應力的大大增加。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鋼成型過
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
經過前一段時間的快速反彈，上周國內鋼材市場價格漲幅明顯放緩，繼續上漲動力減弱;在成交不暢的情況下，市場疲態漸現，加上期鋼市場的持弱偏弱震蕩，進一步加重商家觀望心態，因此上周鋼價窄幅震蕩回落，供需雙方均有一定的觀望心態，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影響，預計短期內國內鋼價還將繼續震蕩偏弱運行為主。程中的問題焦點。
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.
濟南永亞鋼鐵貿易有限公司的,濟鋼一級代理提供技術支持，更多精彩內容請進入：http://www.ctmpfsc.com，我們會傾情為您解答。
Ji'nan YONGYA steel trade Co. Ltd., to provide technical support to Jinan level agents, more exciting content, please enter: http://www.ctmpfsc.com, we will love to answer your questions.