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排气閥用对焊方法制造在国外早已采用了,近年来我国也有少数工厂采用或正在試驗。这种方法具有很多优点:大量节省鍛造和切削加工工时,提高了劳动生产率,减輕劳动强度,节約貴重的合金钢(_9 _2——2.2元/公斤,40——1.2元/公斤)。根据不完全統計,平均每个气閥能节省工时3分,每公斤材料能节約1元,如果按年产15万个气閥計算,就能为国家节約5万元以上,这里不难看出对回民經济的重大意义。我厂經过約一个月的試驗,已經获得成功,并正式
Exhaust valve with the method of welding has long been adopted in foreign countries, in recent years, there are a few factories in our country or are being tested. This method has many advantages: a great deal of saving forging and cutting working hours, improve labor productivity, reduce labor intensity, save expensive alloy steel (_9 _2-2.2 yuan / kg, 40-1.2 yuan / kg). According to incomplete statistics, on average, each valve can save 3 hours of working hours per kilogram of material can save 1 yuan, according to the annual output of 150,000 valves, you can save the country more than 50000 yuan, here is not ugly Out of the great significance of the economy of Muslims. After about one month’s trial in our factory, we have been successful and formal