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首页> 外文期刊>High temperature materials and processes >Pin-On-Disc Characterization of Brass/Ferritic and Pearlitic Ductile Iron Rubbing Pair
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Pin-On-Disc Characterization of Brass/Ferritic and Pearlitic Ductile Iron Rubbing Pair

机译：黄铜/铁素体和珠光体球墨铸铁摩擦对的销盘表征

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摘要

Wear behaviour of special brass produced through two different methods (centrifugal and sand casting) was investigated. The wear tests were carried out at sliding velocities of 0.2 ms~(-1), 0.3 ms~(-1), 0.4 ms~(-1) and 0.5 ms~(-1) and under 10 N, 20 N, and 40 N variable loads. The sliding distance was 600 m for all the tests. A pin-on-disc device with round specimen inserts was used to conduct friction and wear tests in which the friction coefficient, the contact temperature and the linear wear of the tribp-pairs were continuously recorded against sliding distance. Two different materials were used as the counterparts, namely ferritic ductile iron equivalent to GGG40 and pearlitic ductile iron equivalent to GGG60,. The microstruc-tures and wear scars of the brass specimens were examined by optical, scanning electron microscopy (SEM) and X-ray microanalyses by EDAX. A correlation between hardness and wear volume rate was established for the investigated centrifugally cast and sand cast brass specimens. The volume rate of specimens produced by sand casting method was generally found to be higher than those of centrifugally cast specimens. Ferritic ductile counterpart led to higher wear volume rate than pearlitic ductile counterpart for the both specimens. Severe abrasive wear scars were observed for the sand cast specimens/ferritic ductile iron pair. However, severe adhesive wear took place for the centrifugally cast specimen/pearlitic ductile iron pair.
机译：研究了通过两种不同方法（离心和砂铸）生产的特殊黄铜的磨损行为。磨损试验在滑动速度为0.2 ms〜（-1），0.3 ms〜（-1），0.4 ms〜（-1）和0.5 ms〜（-1）以及10 N，20 N和40 N可变负载。所有测试的滑动距离均为600 m。使用带有圆形样本插入物的针盘式设备进行摩擦和磨损测试，其中连续记录摩擦系数，接触温度和三对对的线性磨损与滑动距离的关系。使用了两种不同的材料作为对应材料，即相当于GGG40的铁素体球铁和等于GGG60的珠光体球铁。通过光学，扫描电子显微镜（SEM）和EDAX的X射线显微分析检查了黄铜试样的微观结构和磨损痕迹。建立了所研究的离心铸造和砂铸黄铜试样的硬度与磨损体积率之间的关系。通常发现用砂型铸造法制成的试样的体积率要高于离心铸造型试样的体积率。对于两个试样，铁素体延性对应物导致的磨损量比珠光体延性对应物更高。对于砂铸样品/铁素体球墨铸铁对，观察到严重的磨损痕迹。然而，离心铸造的样品/珠光体球墨铸铁对发生了严重的粘合剂磨损。

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