一、前言 目前市场上有色金属价格昂贵,仅以铜合金材料为例,每公斤价格为32.5元,这就直接影响到机械产品的成本价格。为了在社会主义市场经济下提高竞争力,降低产品成本提高经济效益,寻找一种新材料来代替铜合金材料就势在必行。通过反复试验、分析、对比,我们在TJC50A气动绞车和TMH系列气动马达产品 I. Introduction At present, the non-ferrous metals in the market are expensive, taking the copper alloy material as an example only, the price per kilogram is 32.5 yuan, which directly affects the cost price of mechanical products. In order to enhance competitiveness in the socialist market economy, reduce product costs and increase economic efficiency, finding a new material instead of copper alloy material is imperative. Through repeated testing, analysis, comparison, we TJC50A pneumatic winch and TMH series of air motor products