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42crmo钢板执行标准有哪些?

所属分类:公司动态 发布时间:2021-05-07 来源:https://www.lcnaimoban.com/ 浏览量:

一、碳钒化学物质,该渗层机构匀称,具备优良的持续性和高密度性,薄厚匀称,构造高密度,具备很高的显微镜强度和较高的耐磨性能,表层强度、耐磨性能及抗黏着性等特性大幅度提高。
1、 The carburized layer is characterized by symmetrical structure, excellent continuity and high density, symmetrical thickness, high density structure, high microscope strength and wear resistance, and greatly improved surface strength, wear resistance and adhesion resistance.
二、在马氏体中的溶解性比它在铁索体里的溶解性高,伴随着温度的减少,VC从铁索体里进行析出,使铝合金加强及晶体细化,化学物质层主要表现出较高的强度。
2、 The solubility of VC in martensite is higher than that in ferrite. With the decrease of temperature, VC precipitates from ferrite to strengthen the aluminum alloy and refine the crystal. The chemical layer mainly shows higher strength.
42CrMo钢板归属于高碳钢高铬莱氏体钢,碳化物成分高,约占20%,且常呈带条状或网状结构不分布均匀,缩松比较严重,而基本热处理工艺非常难更改碳化物缩松的情况,比较严重危害了钢的物理性能与模貝的使用期限。
42CrMo steel belongs to high carbon steel and high chromium ledeburite steel. The carbide composition is high, accounting for about 20%, and it often presents strip or network structure. The distribution is uneven and the shrinkage is serious. However, the basic heat treatment process is very difficult to change the situation of carbide shrinkage, which seriously endangers the physical properties of the steel and the service life of the mold shell.
NM450耐磨板
而碳化物的样子、尺寸对钢的特性也是有非常大的危害,特别是在大小块斜角碳化物对钢基材的隔断功效较为大,通常变成疲惫破裂的发祥地,因此务必对原料冷轧不锈钢板材开展改锻,充足摧毁碳化物碳化物,使之呈细微、分布均匀,结缔组织紧紧围绕凹模或无定项遍布,进而改进不锈钢板材的横着物理性能。
The appearance and size of carbides also have great harm to the characteristics of steel, especially in the large and small oblique angle carbides, which have great effect on the steel substrate, and usually become the birthplace of fatigue cracking. Therefore, it is necessary to carry out the forging of raw cold-rolled stainless steel plate to destroy enough carbides and carbides, so that they are fine and evenly distributed, and the connective tissue is tightly around the die or indefinite items, Then the transverse physical properties of stainless steel plate are improved.
三、煅造时对板坯从不一样方位开展数次镦粗和拉拨,并选用二轻一重法煅造,即胚料始锻时要轻击,避免破裂,在980~1020℃正中间温度可猛击,以确保摧毁碳化物, 42CrMo钢板未变锻,选用热处理回火双细化解决,即500℃及800℃上下二级加热,1100~1150℃时效处理,淬入滚油或等温过程热处理,750℃高溫回火,机械加工后960℃加温油冷后开展最后热处理工艺,也可使碳化物细化、边角有光泽化,晶体细化。
3、 During forging, the slab is upsetted and pulled several times from different directions, and the two light and one heavy forging method is selected, that is, the blank should be hit lightly at the beginning of forging to avoid cracking, and it can be hit violently at the middle temperature of 980-1020 ℃ to ensure the destruction of carbide. The 42CrMo steel plate is not forged, and it is solved by heat treatment and tempering, that is, the upper and lower heating at 500 ℃ and 800 ℃, and aging treatment at 1100-1150 ℃, The carbide can also be refined, the corner can be glossy and the crystal can be refined by quenching in rolling oil or isothermal heat treatment, tempering at 750 ℃, heating at 960 ℃ after machining and oil cooling.
购买产品重要的是质量,选择商家选择是诚信,NM450耐磨板真诚的为广大客户提供优良的服务,欢迎大家在网站:https://www.lcnaimoban.com下方留言咨询.
The most important thing to buy products is quality. Choosing merchants is honesty. Nm450 wear resistant plate sincerely provides excellent service for customers. Welcome to visit our website: https://www.lcnaimoban.com Below message consultation
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