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NM450耐磨板需要定义哪些内容?

所属分类:行业动态 发布时间:2021-05-19 来源:https://www.lcnaimoban.com/ 浏览量:

耐磨钢板被广泛应用矿山机械、煤矿机械、环保机械、工程机械等,也常用作为屈服强度≥850MPa高强度结构钢使用。主要是在需要耐磨的场合或部位提供保护,使设备寿命更长,减少维修带来的检修停机,相应的减少资金的投入。
Wear resistant steel plate is widely used in mining machinery, coal mining machinery, environmental protection machinery, engineering machinery, etc. it is also commonly used as high-strength structural steel with yield strength ≥ 850mpa. The main purpose is to provide protection for wear-resistant occasions or parts, so as to prolong the service life of the equipment, reduce the maintenance downtime caused by maintenance, and correspondingly reduce the investment of funds.
采用CO2气体保护焊,匹配ER50-6焊丝,对首钢NM450耐磨钢板进行了焊接,对其焊接冷裂纹敏感性及焊接接头的显微组织与力学性能进行了研究。斜Y形坡口冷裂纹敏感性试验结果表明:在32.6℃不预热焊接时不会产生裂纹,在-1.4℃不预热焊接时,根部裂纹率及截面裂纹率均为100%.
The nm450 wear-resistant steel plate of Shougang was welded by CO2 gas shielded welding with ER50-6 welding wire. The cold crack sensitivity, microstructure and mechanical properties of the welded joint were studied. The results of cold crack sensitivity test of inclined Y-groove show that there is no crack at 32.6 ℃ without preheating, and the root crack rate and section crack rate are 100% at - 1.4 ℃ without preheating
焊接工艺试验接头的抗拉强度为768MPa,焊缝中心的-20℃夏比冲击吸收功为110J,热影响区-20℃冲击吸收功为140J,母材的-20℃冲击吸收功为88J,焊缝金属组织为块状铁素体+针状铁素,粗晶区组织为马氏体,母材为马氏体组织。焊缝硬度为198-233HV,热影响区硬度为234-415HV,母材硬度为334-400HV。
NM450耐磨板
The results show that the tensile strength of the joint is 768mpa, the Charpy impact energy of - 20 ℃ in the weld center is 110j, the impact energy of - 20 ℃ in the heat affected zone is 140J, and the impact energy of - 20 ℃ in the base metal is 88j. The microstructure of the weld metal is massive ferrite + acicular ferrite, the microstructure of the coarse grain zone is martensite, and the base metal is martensite. The hardness of weld is 198-233hv, that of heat affected zone is 234-415hv, and that of base metal is 334-400hv.
主要用途
Main uses
(1)工程机械设备:装载机推土机挖掘机铲斗板、侧刃板、斗底板、刀片、衬板。
(1) Construction machinery and equipment: loader, bulldozer, excavator bucket plate, side edge plate, bucket bottom plate, blade, lining plate.
(2)装卸机械设备:卸轧机链板,料斗衬板,抓斗刃板,中型自动翻斗车翻斗板
(2) Loading and unloading machinery and equipment: unloading mill chain plate, hopper lining plate, grab blade plate, medium-sized automatic tipping car tipping plate
(3)建筑机械设备:水泥推料机齿板,混凝土搅拌机衬板,搅拌楼衬板,除尘器衬板
(3) Construction machinery and equipment: Cement pusher tooth plate, concrete mixer lining plate, mixing plant lining plate, dust collector lining plate
(4)冶金机械设备:铁矿烧结输送弯头,铁矿石烧结机衬板,刮板机衬板
(4) Metallurgical machinery and equipment: iron ore sintering conveying elbow, iron ore sintering machine liner, scraper machine liner
(5)矿山机械设备:矿料、石料破碎机衬板、叶片。
(5) Mining machinery and equipment: mineral, stone crusher liner, blade.
(6)其他机械设备:沙磨机筒体、叶片,各种港口机械耐磨部件
(6) Other mechanical equipment: sand mill barrel, blade, various port machinery wear-resistant parts
(7)火电设备:磨煤机衬板,煤斗,煤分输送管,煤分分配器格板,卸煤设备衬板
(7) Thermal power equipment: mill liner, coal hopper, coal distribution pipe, coal distributor grid, coal unloading equipment liner
(8)抛丸机械设备:抛丸机衬板
(8) Shot blasting machinery and equipment: lining plate of shot blasting machine
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