合金鋸片焊齒的操作步驟
Operation procedure of alloy saw blade welding
合金由超細(xì)微粉在高壓內(nèi)完成燒結(jié)溫度在1200℃，現(xiàn)在合金焊接都偏向低溫焊接。目的保護(hù)其金相組織在焊接時(shí)不受到破壞，焊接溫度不宜高于750℃，溫度均勻比較好隔齒焊接。
The alloy is made of ultrafine powder at high pressure. The sintering temperature is 1200 degrees. Now the alloy welding is biased towards low temperature welding. Objective to protect the metallographic structure from being damaged during welding, and the welding temperature should not be higher than 750 degrees.
焊齒時(shí)要注意合金是否有碳化物，保持合金周邊干凈不要有灰塵，齒座不允許有銹點(diǎn)或氧化物，助焊劑不宜太濃或太稀，調(diào)成糊狀，有粒狀助焊劑不能使用。注意沉淀，重復(fù)使用時(shí)要調(diào)和助焊劑，比較好滴在合金上，不要糊在基體齒根外。
When welding teeth, we should pay attention to whether the alloy has carbides, keep the alloy around clean and do not have dust, the teeth are not allowed to have rust or oxide, and the flux should not be too thick or too thin to make a paste, and the granular flux can not be used. Attention should be paid to precipitation. When used repeatedly, the flux should be reconciled, preferably on the alloy, not on the root of the matrix.
使用銀焊絲不能追求含銀量過高，一般在45%就可以。銀焊絲主要金屬元素銀、銅、鎳，銀低溫，鎳鋅增強(qiáng)流動(dòng)性，銅增加強(qiáng)度，只要增加適量錳、銦、硒，粘結(jié)力更強(qiáng)。錳有氣孔，銦、硒元素太貴，一般焊絲焊接強(qiáng)度每平方厘米強(qiáng)度為5-16KG，一般每個(gè)齒視合金焊接面積大小而定，每齒強(qiáng)度不能低于50KG，工業(yè)類型在100KG以上。
The use of silver wire can not pursue excessive silver content, usually in 45%. Silver, copper, nickel, silver and nickel are the main elements of silver welding wire. The fluidity of nickel and zinc is enhanced, and the strength of copper is increased. As long as the amount of manganese, indium and selenium are increased, the cohesive force is stronger. Manganese has stoma, indium and selenium is too expensive, the strength of welding wire welding is 5-16KG per square centimeter. In general, the size of each tooth alloy welding area depends on the strength of each tooth. The strength of each tooth can not be less than 50KG, and the industrial type is above 100KG.
焊完鋸片后隨即放在100℃烘箱內(nèi)回火，減少焊齒造成應(yīng)力及細(xì)化合金內(nèi)部組織，提高耐用及耐磨度。
After welding the saw blade, it will be tempered in the oven at 100 degrees Celsius to reduce the stress caused by the welding tooth and to refine the internal structure of the alloy, so as to improve durability and wear resistance.
