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    我们应该如何分辨模具钢质量的优劣?

    来源:https://www.jnqhmj.com/ 日期:2021-02-23 发布人:admin


    随着社会经济的发展,我们对模具钢的需求量越来越大,现如今模具钢材料供应商遍地都是,参差不齐,以国产假冒进口的现象十分普遍,更有甚者以小型私营炼钢厂的产品充当优质模具钢,模具的质量直接影响着压力加工工艺的质量、产品的精度产量和生产成本,接下来济南模具钢给大家分享一下分辨模具钢质量的优良的方法
    With the development of social economy, our demand for die steel is increasing. Nowadays, die steel material suppliers are all over the place, uneven. It is very common to import domestic counterfeit products. What's more, the products of small private steelmaking plants are used as high-quality die steel. The quality of the die directly affects the quality of the pressure processing technology, the precision of the product, the output and the production cost Next, jinan die steel will share with you the excellent method of distinguishing the quality of die steel
    首先优良材的商标和印字都比较规范,像我们平时看的标志或许有模糊不清的,有可能是劣质钢。伪劣模具钢的一些特征:
    First of all, the trademark and printing of excellent materials are relatively standardized. For example, the logo we usually see may be ambiguous, or it may be inferior steel. Some characteristics of fake and inferior die steel are as follows
    1、伪劣钢材易出现折叠。
    1. Fake and inferior steel is easy to fold.
    折叠是钢材表面形成的各种折线,这种缺陷往往贯穿整个产品的纵向
    Folding is a variety of broken lines formed on the surface of steel, which often runs through the longitudinal direction of the whole product
    购买模具钢时,我们应该如何分辨模具钢质量的优劣
    When purchasing die steel, how should we distinguish the quality of die steel
    。产生折叠的原因是由于伪劣厂家追求高效率,压下量偏大,产生耳子,下一道轧制时就产生折叠,折叠的产品折弯后就会开裂,钢材的强度大下降。
    . The reason for the folding is that the fake and inferior manufacturers pursue high efficiency, the reduction is too large, and the ears are produced. The folding will occur in the next rolling, and the folded products will crack after bending, and the strength of the steel will drop greatly.
    2、伪劣钢材外表经常有麻面现象。
    2. The appearance of fake and inferior steel often has pockmarked surface.
    麻面是由于轧槽磨损严重引起钢材表面不规则的凹凸不平的缺陷。由于伪劣钢材厂家要追求利润,经常出现轧槽轧制最超标。
    Pockmarked surface is a kind of irregular and uneven defect on steel surface caused by severe groove wear. As the manufacturers of fake and inferior steel want to pursue profits, groove rolling often exceeds the standard.
    3、伪劣模具钢含杂质多,钢的密度偏小,而且尺寸超差严重,所以在没有游标卡尺的情况下,可以对它进行称量核对。比如对于螺纹钢20,国家标准中规定最大负公差为5%,定尺9M时它的单根理论重量为120公斤,它的最小的重量应该是:120X(l-5%)=114公斤,称量出来单根的实际重量比114公斤小,则是伪劣钢材,原因是它负公差超过了5%。一般来说整相称量效果会更好,主要考虑到累积误差和概率论这个问题。
    3. There are many impurities in the fake and inferior die steel, the density of the steel is small, and the size is seriously out of tolerance, so it can be weighed and checked without vernier caliper. For example, for rebar 20, the national standard stipulates that the maximum negative tolerance is 5%. When the length is 9m, its single theoretical weight is 120kg, and its minimum weight should be: 120x (L-5%) = 114kg. If the actual weight of a single rebar is smaller than 114kg, it is fake and inferior steel. The reason is that its negative tolerance exceeds 5%. Generally speaking, the whole phase weighing effect will be better, mainly considering the cumulative error and probability theory.
    以上就是小编为大家介绍的如何对于伪劣的模具钢进行区分的方法,希望可以帮助到大家,更多的精彩内容可以关注:http://www.jnqhmj.com
    The above is how to distinguish the fake and inferior die steel. I hope it can help you. More wonderful contents can be paid attention to http://www.jnqhmj.com

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