| 详细介绍：
材料名称：合金工具钢
牌号：9SiCr
标准：GB/T 1299—2000
交货状态：热轧、冷轧(退火)
交货规格：热轧2.5~6.0mm（板），冷轧1.5~2.5mm（带）
特性及应用:
高碳合金工具钢，韧性较好，具有较好的回火稳定性，热处理时变形小。该钢中碳化物分布均匀，不易析出碳化物网，并易于正火消除，通过正火可以消除网状以及粗片碳化物组织。但是抗压强度和耐磨性不足，加工性较差。该钢的表面残余含碳量为0.6%—0.7%的脱碳层时，由于碳化物的减少使得表面层的过热敏感性增大。经正常加热淬火以后表面硬度仍可以达到60—62HRC，但其抗弯强度却下降40%—50%。表面层晶粒度达到7级，心部为10级。
该钢锻造性能良好，由于易脱碳，需要在中性气氛或者保护气氛炉中加热。施以锻热调质处理，可以获得细密的回火索氏体组织，简化工艺，省时节电，既有良好的切削加工性能，又有理想的余热处理组织。
该钢受热软化温度为320℃，淬透性比铬钢好，油淬淬硬性深度40—50mm。该钢零保温淬火韧化工艺，可以消除搓丝=板因常规淬火加热氧化脱碳造成的早期失效，不均匀奥氏体修或可以细化马氏体，搓火后得到隐晶马氏体或者细针状马氏体，这种组织强韧性好。
9SiCr量具刃具用钢，是常用的低合金工具钢，具有较高的淬透性和淬硬性，以及较高的回火稳定性。
二 更多运用举例：
1 该钢用作冲制料厚≥3mm的冲裁模具中形状复杂的凸模 凹模 镶块,做凸模时建议硬度58—62HRC，做凹模是建议60—64HRC。
2批量软料中厚板冲裁模常用9SiCr等钢。
3 用于滚丝模好，经超细化预处理后，服役期寿命提高一倍，
4 该钢制M50×2搓丝板采用锻热调质预处理索氏体组织与淬火马氏体比较接近，加之“薄壳淬火”，寿命提高2—3倍。
5 载荷轻或者小批量生产用冷镦模
6 该钢用于较精密复杂的模具。
7 该钢用于下料模，冲头，压花模。
8 用于高强度的冷作模具钢。
9 用于铝件冷挤压模，做凸模时建议硬度为60—62HRC。
10 齿轮冲模，剪刀以及冷轧锟。
11 是各种冲剪工具精压膜，冷镦模的基本材料。
12 适用用耐磨性高切削不剧烈且变形小刀具，如板牙 丝锥 钻头 铰刀 齿轮铣刀 拉刀等。
应用：
9SiCr合金工具钢可用于制造形状复杂、变形小、耐磨性高、低速切削的工具，如钻头、螺纹工具、铰刀、板牙、丝锥、搓丝板和滚丝轮等。（塑料模具钢时，可用于顶出杆，制造尺寸家大，形状复杂和精度要求高的塑料膜。
Material name: alloy tool steel
Brand: 9SiCr
Standard: GB/T 1299 - 2000
Delivery status: hot rolling, cold rolling (annealing)
Delivery specifications: hot rolled 2.5~6.0mm (plate), cold rolled 1.5~2.5mm (band)
Characteristics and applications:
High carbon alloy tool steel, toughness is good, with good tempering stability, heat treatment deformation is small. The steel carbide distribution, not to the precipitation of carbide network and easy to be normalized to eliminate, by normalizing can remove the mesh and plate coarse carbides. However, the compressive strength and wear resistance, poor processing. The steel surface residual carbon content of 0.6%, 0.7% of the decarburized layer, due to the carbide due to the decrease of surface layer of overheating sensitivity increases. The surface hardness can reach 60 to 62HRC after the normal heating and quenching, but the bending strength is decreased by 40% - 50%. The grain size of the surface layer reaches 7, and the heart is 10.
The good performance of steel forging, due to decarburization, need to be heated in a neutral atmosphere or protective atmosphere furnace. Impose forging heat quenching and tempering treatment can obtain fine tempered sorbite martensite structure, simplify the process, saving the electricity, both good cutting performance, and ideal heat treatment microstructure.
The steel heat softening temperature of 320 DEG C, the hardenability of steel ratio, oil quenching hardening depth of 40 - 50mm. The steel zero time holding quenching toughening technique, can eliminate rub silk = plate for conventional quenching heating oxidation and decarbonization cause early failure, inhomogeneous austenite or martensite refinement can, rub fire after cryptocrystalline martensite or fine acicular martensite body, the strong organization good toughness.
Steel 9SiCr measuring and cutting tools, commonly used low alloy tool steel with high hardenability and hardenability and high tempering stability.
Two more use of examples:
1 the steel used for punching material thickness of 3 mm rushed in the die cutting shape complex convex concave die die insert block, punch recommended hardness of 58 - 62 HRC, concave die is 60 - 64hrc recommendations.
2 bulk soft material in the thick plate blanking die commonly used 9SiCr steel.
3. The service life of the wire is improved, and the service life of the die is increased by the super fine,
4 the steel M50 * 2 rub silk plate by quenching and tempering heat forging pretreatment cable is very close to the martensite structure and quenched martensite, coupled with "shell hardening", life expectancy increased 2 - 3 times.
With the cold die 5 load light or small batch production
6 the steel is used for more precise and complicated mould.
7 of the steel used for blanking die, punch, die embossing.
8 for high strength cold work die steel.
9 for cold extrusion die for aluminum parts, the proposed hardness is 60 - 62HRC.
The 10 gear die, scissors and cold rolling roll.
11 is the basic material of fine punching tool lamination, cold heading die.
12 for high wear resistance of cutting intensity and deformation is small tool, such as die tap drill reamer broach and other gear cutter.
Application:
9SiCr alloy tool steel can be used in the manufacture of complex shape, small deformation, high wear resistance, low speed cutting tools, such as bit, thread tools, reamer and dies, tap, rub silk plate and screw rolling wheel etc.. Plastic mold steel, can be used for the top of the rod, manufacturing size, shape, complex and high accuracy requirements of plastic film.
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