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燕子花纹的刮削是在高精度刮削和快速分点法的基础上发展起来的。高精度刮削的要求很高,主要取决于刮刀与操作方法。高精度刮削对刮刀的要求如下:刮刀头部见图1。刮刀的宽度要比普通粗刮刀要窄,材料用GCr15等轴承钢锻件,头部淬火至HRC58～60,毛坯经过粗精磨削,四角倒棱去毛刺,然后,用细油石(油石牌号TLM10—M12ZR_1～ZR_2ASc)或铸铁平板上加M10研磨砂、机油、煤油适量,将刃口精研磨至8以上;刮刀
Swallows pattern scraping is based on high-precision scraping and rapid break-point method developed on the basis of. High-precision scraping demanding, mainly depends on the scraper and method of operation. High-precision scraper scraper requirements are as follows: scraper head shown in Figure 1. The width of the scraper is narrower than that of the ordinary coarse scraper. The material is forgings such as GCr15 bearing steel, the head is quenched to HRC58 ~ 60, rough rough grinding, four corner chamfer deburring, and then, with fine oil stone (oil stone TLM10- M12ZR_1 ~ ZR_2ASc) or cast iron plate with M10 grinding sand, oil, kerosene right amount, the edge grinding to 8 or more; scraper