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            當前位置:首頁>新聞中心>新聞動態>山東模具鋼分辨模具鋼質量的優劣的方法

            山東模具鋼分辨模具鋼質量的優劣的方法

            來源:http://www.environmentandpeople.net/ 日期:2020-12-09 發布人:admin


            隨著社會經濟的發展,我們對模具鋼的需求量越來越大,現如今模具鋼材料供應商遍地都是,參差不齊,以國產假冒進口的現象十分普遍,更有甚者以小型私營煉鋼廠的產品充當優質模具鋼,模具的質量直接影響著壓力加工工藝的質量、產品的精度產量和生產成本,接下來七和模具鋼給大家分享一下分辨模具鋼質量的優劣的方法。
            With the development of social economy, our demand for die steel is increasing. Nowadays, die steel material suppliers are everywhere, uneven, and the phenomenon of domestic counterfeit import is very common. What's more, small private steel-making plants are used as high-quality die steel. The quality of die directly affects the quality of pressure processing technology, the accuracy of products, the output and production cost Next, seven and die steel to share with you how to distinguish the quality of die steel.
            首先優良材的商標和印字都比較規范,像我們平時看的標志或許有模糊不清的,有可能是劣質鋼。偽劣模具鋼的一些特征:
            First of all, the trademarks and lettering of high-quality materials are relatively standardized. For example, the signs we usually see may be vague, which may be of poor quality steel. Some characteristics of fake and inferior die steel are as follows
            1、偽劣鋼材易出現折疊。
            1. Fake and inferior steel is easy to fold.
            折疊是鋼材表面形成的各種折線,這種缺陷往往貫穿整個產品的縱向購買模具鋼時,我們應該如何分辨模具鋼質量的優劣。產生折疊的原因是由于偽劣廠家追求高效率,壓下量偏大,產生耳子,下一道軋制時就產生折疊,折疊的產品折彎后就會開裂,鋼材的強度大下降。
            Folding is a variety of broken lines formed on the surface of steel. This kind of defect often runs through the longitudinal direction of the whole product. When purchasing die steel, how should we distinguish the quality of die steel. The reason for folding is that the fake and inferior manufacturers pursue high efficiency, and the reduction is too large, resulting in ears. Folding will occur in the next rolling. The folded products will crack after bending and the strength of the steel will be greatly reduced.
            山東模具鋼

            山東模具鋼
            2、偽劣鋼材外表經常有麻面現象。
            2. The surface of fake and inferior steel is often pitted.
            麻面是由于軋槽磨損嚴重引起鋼材表面不規則的凹凸不平的缺陷。由于偽劣鋼材廠家要追求利潤,經常出現軋槽軋制最超標。
            Pitting is a kind of irregular and uneven defect on steel surface caused by serious wear of rolling groove. As the manufacturers of fake and inferior steel want to pursue profits, the groove rolling often exceeds the standard.
            3、偽劣鋼材的橫截面呈橢圓形。
            3. The cross section of fake and inferior steel is oval.
            由于廠家為了節約材料,成品輥前二道的壓下量偏大,這種螺紋鋼的強度大大地下降,而且也不符合螺紋鋼外形尺寸的標準。
            In order to save materials, the reduction of the first two passes of the finished roll is too large, so the strength of this kind of rebar is greatly reduced, and it does not conform to the standard of external dimension of rebar.
            4、偽劣鋼材凹凸不平無光澤。
            4. Fake and inferior steel is uneven and lustrous.
            優質鋼材的成分均勻,冷剪機的噸位高,切頭端面平滑而整齊,而偽劣材由于材質差,切頭端面常常會有掉肉的現象,即凹凸不平,并且無金屬光澤。而且由于偽劣材廠家產品切頭少,頭尾會出現大耳子。
            The composition of high-quality steel is uniform, the tonnage of cold shear machine is high, and the end face of cutting head is smooth and neat. However, due to poor material quality of fake and inferior materials, the end face of cutting head often has the phenomenon of fleshy, that is, uneven and without metallic luster. And because of the fake and inferior products manufacturers cut less, head and tail will appear big ears.
            5、偽劣鋼材重量有偏差。
            5. There is deviation in the weight of fake and inferior steel.
            偽劣鋼材材質含雜質多,鋼的密度偏小,而且尺寸超差嚴重,所以在沒有游標卡尺的情況下,可以對它進行稱量核對。比如對于螺紋鋼20,國家標準中規定最大負公差為5%,定尺9M時它的單根理論重量為120公斤,它的最小的重量應該是:120X(L-5%)=114公斤,稱量出來單根的實際重量比114公斤小,則是偽劣鋼材,原因是它負公差超過了5%。一般來說整相稱量效果會更好,主要考慮到累積誤差和概率論這個問題。
            Fake and inferior steel material contains many impurities, the density of steel is too small, and the size is out of tolerance seriously, 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 scale is 9m, the theoretical weight of a single bar is 120kg, and its minimum weight should be: 120x (L-5%) = 114kg. If the actual weight of a single bar 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.
            以上就是七和模具鋼給大家分享的分辨模具鋼質量的優劣的方法。即使是正規的模具鋼,也有可能有問題,當然幾率很小,正規的銷售商出貨前都會做探傷測驗,可以有效的防止這類問題。希望對大家有所幫助,對模具鋼感興趣的朋友關注:http://www.environmentandpeople.net
            The above is seven and mold steel to share with you to distinguish the quality of mold steel method. Even if it is a regular mold steel, there may be problems, of course, the probability is very small, regular sellers will do flaw detection test before shipment, which can effectively prevent such problems. Hope to help you, interested in die steel friends pay attention to: http://www.environmentandpeople.net

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