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东莞电位器金属材料做电刷

文章出处:东莞市长鸿电子科技有限公司  编辑:[!--keyword--]  发表时间:2017-04-28 16:08:21

       用金属材料做的电刷,应具有较高的抗拉强度和较好的延伸率AG娱乐,并易于焊接,便于加工组装等。金属电刷应选用弹性好的金属材料,以便电刷动触点对电阻体有一定弹性压力AG娱乐。弹性材料应具有较高的弹性极限、屈服极限等。在长期使用中,电刷的弹性压力变化越小,接触可靠性越高。金属电刷常用的材料有:铍青铜AG娱乐、磷青铜、锌白铜、把银铬合金、铂镍合金、铂铱合金、镑铱合金、金银铜合金等。以贵金属为基的合金,具有高的抗氧化和抗腐蚀性能,即使在高温高湿条件下也相.当稳定;接触电阻变化很小,常用于精密电位器
         Metallic materials do brush, should have high tensile strength and high elongation, and is easy to weld, convenient processing and assembly. Metal brush should choose good elasticity of the metal material, so that the brush contact resistance body has certain elasticity pressure on. Elastic material should have high elastic limit, yield limit. In the long-term use, brush elastic pressure change smaller, higher reliability of contact. Metal brush common materials: beryllium bronze, phosphor bronze, zinc white copper, silver alloy, nickel alloy, platinum iridium alloy, pound iridium alloy, gold and silver copper alloy. With precious metal based alloy, high resistance to oxidation and corrosion resistance, even at high temperature and high humidity conditions. When the stable phase; contact resistance variation is small, commonly used in precision potentiometer
        电位器中沿电阻体滑动AG娱乐,并引出输入电压的动触点构件称电刷<或接触式入电刷分两大类:一类是金属刷。即金属材料制作的电刷;另一类是碳刷,即用碳晨i溺矗和树指等混合材料制作的电刷。金属刷的形状有刷形,点形、球面形和‘多指形等AG娱乐AG娱乐。在保证接触可靠性和电流分布均匀上,以多指电刷效果最好。碳刷的形状有圆锥形和长方形等,接触面有平面的和球面的,电位器的接触可靠性、低噪声、机械耐久性及使用寿命等,直接与电刷一电阻体的接触状态和机械磨损有关。
        Potentiometer resistor sliding along, and leads to the input voltage dynamic contact members called brush < or contact into the brush into two categories: one category is a metal brush. Metal materials for the production of brush; another kind is the carbon brush, namely carbon morning I drowning. And tree refers to the mixed material for making brush. Metal brush shape with a brush, point shape, spherical shape and ' multi finger etc.. To ensure the reliability of contact and uniform current distribution, to a brush effect best. Carbon brush shapes are conical and rectangle, contact surface with planar and spherical, potentiometer contact reliability, low noise, mechanical durability and service life directly with a brush, a resistor contact state and mechanical wear related.

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