江苏11选5走势图

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    13733919801/13592198132

    高强耐磨板

    WNM400耐磨钢板WNM400价格WNM400性能〓WNM40调质WNM400切割

    作者:李成13733919801 发布时间:2020/02/25 点击量:

    WNM400· 交货状态:淬火+回火
    江苏11选5走势图

    · 用 途:用于矿山、煤矿、环保
    Material, performance, composition, spot, cutting, price, where there is, use, distribution, quality, quality, processing, Wuyang Steel, Anyang steel, steel plant, warehouse, supply, purchase, flaw detection, heat treatment, normalizing, tempering, tempering, national standard, GB, American Standard, ASTM, European standard, en, Japanese standard, JIS, dance technology, certification, ISO, German standard, DIN, classification society, HIC, hydrogen, hydrogen, Special, material, high strength, wear resistance, one exploration, two exploration, three exploration, surface, four cutting, management, specification, brand, steel plate

    一、简介:

    WNM400牌号属于舞钢产高级别调质型耐磨钢板;其牌号等级高于WNM360。

    用途:主要用于矿山、煤 矿、环保、通风设◢备、自卸卡车及各种工▲程机械用耐磨易损件加▆工▲№和制造等使用的结构钢板。

    牌号表示方法:钢板牌号由代表生产厂家、用途、硬度及质量等级等四个部分按顺序组成 ,例 如:WNM400A ,WNM400B等

    符号:W-----表示舞阳钢铁有限责任公司|江苏11选5走势图的"舞"字汉语拼音的首位字母;

    NM----表示耐磨用途的"耐"№和"磨"字汉语拼音首位字母;

    A、B--分别为质量等级 ,同时A代表钢板不做冲击 ,B代表钢板做20度常温冲击;

    钢板采用齐边轧制 ,切头尾 ,不切两纵边 ,其切边余量按正常切边板控制。

    钢板其余的尺寸、外形、重量及允许偏差应符合GB/T709。

    二 ,WNM400化学成分(熔炼分析)符合下表之规定:

    WNM400化学成分:

    等级

    C

    Si

    Mn

    P

    S

    Mo

    Cr

    Ni

    B

    A

    ≤0.25

    ≤0.70

    ≤1.60

    ≤0.025

    ≤0.010

    ≤0.50

    ≤1.40

     

    ≤0.004

    B

    ≤0.25

    ≤0.70

    ≤1.60

    ≤0.025

    ≤0.010

    ≤0.50

    ≤1.00

    ≤1.00

    ≤0.004

    注:允许钢板添加▆微合金★强化元素 ,如Nb、V、Ti等。

    冶炼方法:电炉+炉外精炼。

    交货状态:淬火+回火。

    三、力学性能〓:

    力学性能〓符合下表之规定:

    等级

    硬度(HBW)

    20℃AKV纵向J

    A

    350~400

    提供

    B

    350~400

    ≥21

    钢板表面质量符合GB3274之规定。

    每批钢板的检验ζ项目、试样数量、取▓样方法№和试验ζ方法应符合正符合下表之规定:

    序号

    检验ζ项目

    取▓样数量

    取▓样方法

    试验ζ方法

    1

    拉伸

    1

    GB/T2975

    GB/T228

    2

    冲击

    3

    GB/T2975

    GB/T229

    3

    弯曲试验ζ

    1

    GB/T2975

    GB/T232

    4

    硬度

    1

    GB/T2975

    GB/T231

    布氏硬度(HBW)检验ζ ,依据国家标准GB/T231 ,钢板表面铣掉1.0-2.2毫米 ,然后在此表面检验ζ硬度。

    钢板的包装、标志及质量证明书应符合GB/T247之规定。

    四、WNM400耐磨钢板与进口钢种对照:折叠

    中国舞钢

    WY

    日本企标

    JFE

    瑞典标准

    SSAB

    德国企标

    DILLIDUR

    住友企标

    SUMIHARD

    WNM400

    JFE-EH400A

    HARDOX400

    400V

    K400

    五、WNM400项目应用及前景:

    工▲程机械、矿山机械、煤矿机械、环保机械、冶金★机械等制造企业↘舞钢合作生产用于挖掘机、装载机、推土机铲斗板、刃板、侧刃板、刀片、破碎机衬板、叶片建设◢项目的WNM400约5000余吨。在出口美国、加▆拿大、澳洲、印度、欧洲的前景一片看好。已经直供欧洲客户20000余吨。 舞钢生产技术领先。舞钢产品现货常规规格厚度8-100mm ,长宽尺寸以2000*8000与2200*8000居多

    六、切割方法:

    冷切割

    冷切割包括有水射流切割、剪切、锯切或磨料切割。

    优点:切割热影响小 ,防止整个工▲件硬度降低 ,减少切割工▲件变形。

    缺点:成本高 ,只能〓切割薄板 ,切割速度慢。

    热切割

    热切割包括有氧气燃料火焰切割(以下简称"火焰切割")、等粒子切割№和激光切割。

    优点:切割成本低 ,各地都有加▆工▲设◢备 ,可切割厚板 ,切割速度快。

    缺点:易降低钢板硬度、产生裂纹。

    火焰切割注意事项

    低速切割

    避免切割裂纹的方法之一 ,如果无法进行整板预热 ,也可以采用局部预热法代替。使用低速切割防止切割裂纹 ,其可靠性不如预热。本人建议用切割前先对切割带(所切工▲件的四周或者直线)用火焰枪空泡几趟进行预热 ,预热温度达到100℃为宜。如果切割设◢备是双枪或者多枪的情况下 ,可以用前面的火焰枪抬高高度 ,进行预热 ,后边火焰枪进行切割 ,也可以达到预热切割的目的。

    切割后缓冷

    无论对切割件是否预热 ,钢板切割后的缓冷都会有效的降低切割后产生裂纹的风险。如果切割后使其带有温热的工▲件堆放 ,使用隔热毯将其覆盖 ,也可实现缓冷 ,缓冷要求冷却至室温。

    切割后加▆热

    对于耐磨板的切割 ,切割后立即采取▓加▆热(低温回火) ,也可防止切割裂纹的有效方法№和措施。钢板切割后通过低温回火处理 ,可以有效消除切割残余内应力。

     

    对于钢板切割后加▆热的方法 ,也可以采用火焰枪烧、电子加▆热毯№和加▆热炉的加▆热方式进行切割后的加▆热。

    Cold cutting
    Cold cutting includes water jet cutting, shearing, sawing or abrasive cutting.
    Advantages: the cutting heat effect is small, the hardness of the whole workpiece is prevented from reducing, and the deformation of the cutting workpiece is reduced.
    Disadvantages: high cost, only cutting thin plate, slow cutting speed.
    Hot cutting
    Thermal cutting includes oxygen fuel flame cutting (hereinafter referred to as "flame cutting"), particle cutting and laser cutting.
    Advantages: low cutting cost, all over the processing equipment, can cut thick plate, cutting speed is fast.
    Disadvantages: it is easy to reduce the hardness of steel plate and produce cracks.
    Precautions for flame cutting
    Low speed cutting
    One of the methods to avoid cutting cracks, if the whole plate can not be preheated, the local preheating method can also be used instead. Using low speed cutting to prevent cutting crack, its reliability is not as good as preheating. Before cutting, I suggest preheating the cutting belt (around or in a straight line of the workpiece) with a flame gun for several times, and the preheating temperature should reach 100 ℃. If the cutting equipment is double gun or multi gun, the front flame gun can be used to raise the height for preheating, and the rear flame gun can be used for cutting, which can also achieve the purpose of preheating cutting.
    Slow cooling after cutting
    No matter whether the cutting piece is preheated or not, the slow cooling of the steel plate after cutting will effectively reduce the risk of cracks after cutting. If the workpiece with warm heat is piled up after cutting, it can also be cooled slowly by covering it with heat insulation blanket, which requires cooling to room temperature.
    Heating after cutting
    For the cutting of wear-resistant plate, heating (low temperature tempering) shall be taken immediately after cutting, which can also prevent the effective methods and measures of cutting cracks. After cutting, the residual internal stress can be effectively eliminated by low temperature tempering treatment.
    For the heating method of steel plate after cutting, flame gun burning, electronic heating blanket and heating furnace can also be used for heating after cutting

     

     

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