本文選題：缸套 + 邊角圓化　； 參考：《中國表面工程》2016年06期

【摘要】：研究了一種新型的高硅鋁合金缸套表面處理技術(shù),采用橡膠圈+金剛石顆粒的方式研磨缸套表面,這種表面硅顆粒整形技術(shù)可以使硅顆粒凸出表面并且邊角圓化。整形處理缸套表面2 min,可制備出凸出高度約為1.2μm,邊角輪廓自然圓化過渡的硅顆粒。摩擦磨損試驗(yàn)結(jié)果表明,相對(duì)于未整形,整形處理后的高硅鋁合金缸套的摩擦因數(shù)可從0.14降低到0.12,降幅約為14%;磨損量從0.7 mg降低到0.2 mg,降幅約為71%。未整形的硅顆粒表面覆蓋一層鋁,或與缸套表面保持同一高度。當(dāng)活塞環(huán)與缸套對(duì)磨時(shí),鋁作為軟金屬易發(fā)生塑性流變,被碾壓覆蓋到硅顆粒表面上,發(fā)生黏著磨損,所以摩擦因數(shù)及磨損量較大。而整形后的硅顆粒凸出缸套表面以承擔(dān)載荷,加強(qiáng)了表面支承力,而且與鋁基體共同形成的凹陷處儲(chǔ)油,增大潤(rùn)滑效果,同時(shí)其邊角圓化,避免了應(yīng)力集中。所以整形技術(shù)可以有效地降低高硅鋁合金缸套的摩擦因數(shù)及磨損量,改善摩擦磨損性能。
[Abstract]:A new type of high silicon aluminum alloy cylinder liner surface treatment technology is studied. The rubber ring diamond particle is used to grind the cylinder liner surface. This kind of surface silicon particle shaping technology can make the silicon particle protrude out of the surface and round the edge angle. The silicon particles with a protruding height of about 1.2 渭 m and natural circular transition of edge profile can be prepared by shaping the cylinder liner surface for 2 mins. The results of friction and wear test show that the friction coefficient of high silicon aluminum alloy cylinder liner after plastic treatment can be reduced from 0.14 to 0.12, the decrease is about 14%, and the wear amount is reduced from 0.7 mg to 0.2 mg, the decrease is about 71%. The surface of unshaped silicon particles is coated with aluminum or at the same height as the cylinder liner surface. When piston ring and cylinder liner are grinded against each other, the plastic rheology of aluminum is easy to occur as a soft metal, and it is rolled onto the surface of silicon particles, resulting in adhesive wear, so the friction coefficient and wear amount are larger. The shaped silicon particles protrude out of the cylinder liner surface to bear the load, strengthen the surface supporting force, and store oil in the joint depression with aluminum matrix to increase the lubricating effect, at the same time, the edge angle is rounded and the stress concentration is avoided. Therefore, the plastic technology can effectively reduce the friction coefficient and wear quantity of high silicon aluminum alloy cylinder liner, and improve the friction and wear performance.
【作者單位】： 大連海事大學(xué)船機(jī)修造工程交通行業(yè)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家重大基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)(2010) 國家自然科學(xué)基金(51509029) 遼寧省教育廳基金(L2015065) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(3132015032)
【分類號(hào)】：TG178

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王湘君;;高硅鋁合金中銻、銅、錳、鎂、鐵的原子吸收分光光度法測(cè)定[J];湖南冶金;1977年04期

2 郝廷t，

本文編號(hào)：2083309