Chromium bronze

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Chromium bronze QCr0.5

牌号：QCr0.5

Grade: QCr0.5

　　标准：GB/T ********1

Standard: GB/T ********1

　　●特性及适用范围：

The characteristics and applicable scope:

　　QCr0.5铬青铜在常温及高温下（**0℃）具有较高的强度及硬度，导电性和导热性好，耐磨性和减摩性也很好，经时效硬化处理后，强度、硬度、导电性和导热性均显著提高；易于焊接和钎焊，在大气和淡水中具有良好的抗蚀性，高温抗氧化性好，能很好地在冷态和热态中承受压力加工；但其缺点是对缺口的敏感性较强，在缺口和尖角处造成应力集中，容易引起机械损伤，故不宜作整流子片。

QCr0.5 bronze at room temperature and high temperature (**0 ℃) has high strength and hardness, good electrical and thermal conductivity, wear resistance and antifriction performance is also very good, the age hardening treatment, strength, hardness, electrical conductivity and thermal conductivity were significantly increased; easy to welding and brazing, has good resistance to corrosion in air and water, high temperature oxidation resistance, can well withstand pressure processing in the cold and hot state; but its drawback is the strong sensitivity to gap, in the gap and sharp corners caused by stress concentration, easy to cause mechanical damage, therefore, should not be the commutator piece.

　　应用举例：制作工作温度**0℃以下的电焊机电极、电机整流子片以及其他各种在高温下工作的、要求有高的强、硬度、导电性和导性的零件，还可以双金属的形式应用于刹车盘和圆盘。

Examples of application: temperature below **0 ℃, welding electrode, motor commutator and various other working in high temperature, high hardness, strong demand, conductivity and conductive parts, can also double metal form is applied to the brake disc and disc.

　　●化学成份：

● chemical composition:

　　铜 Cu ：余量

Copper Cu: allowance

　　镍 Ni：≤0.*5

Nickel: Ni ≤ 0.*5

　　铁 Fe：≤0.1

Iron: Fe ≤ 0.1

　　铬 Cr：0.4～1.1

Chromium, Cr:0.4 ～ 1.1

　　注：≤0.5(杂质)

Note: ≤ 0.5 (impurity)

　　●力学性能：

● mechanical properties:

　　注 ：棒材的纵向室温拉伸力学性能

Note: the tensile mechanical properties at room temperature of the longitudinal bars

　　试样尺寸：直径*8～**0

Sample size: diameter of *8 ~ **0

　　●热处理规范：热加工温度**0～**0℃;淬火温度**0～***0℃水冷;l回火温度**0～**0℃。

● heat treatment specification: thermal processing temperature **0 ～ **0 ℃; quenching temperature **0 ～ ***0 ℃ water; l tempering temperature **0 ～ **0 ℃.