Na farko, preheating:
1. Domin workpiece tare da hadaddun siffar ko kaifi giciye-sashe canji da kuma babban tasiri kauri, ya kamata a preheated.
2. Hanyar preheating shine: preheating don 800 ℃, preheating na biyu shine 500 ~ 550 ℃ da 850 ℃, yawan zafin jiki na tashin farko na preheating ya kamata a iyakance.
Na biyu, dumama:
1. Akwai notches da ramuka a cikin workpiece, simintin gyaran kafa da waldi sassa da kuma sarrafa bakin karfe workpiece, kullum ba a cikin gishiri wanka makera dumama.
2. Tabbatar cewa workpiece ne mai tsanani ga wani isasshen lokaci. Yi lissafta ingantaccen kauri na workpiece da kauri na yanayin (ainihin kauri wanda aka ninka ta hanyar madaidaicin sifa) ta hanyar nuni zuwa Tebur 5-16 da Table 5-17
Uku, tsaftacewa:
1. Dole ne a share kayan aiki da kayan aiki daga mai, ragowar gishiri, fenti da sauran abubuwa na waje kafin maganin zafi.
2. Kayan da aka yi amfani da shi a karon farko a cikin tanderun injin ya kamata a tsabtace shi kuma a tsarkake shi a gaba a kalla a ƙarƙashin digirin injin da ake buƙata ta hanyar aiki.
Hudu, lodin tanderu:
1. A cikin aiwatar da maganin zafi, kayan aikin nakasa ya kamata a yi zafi a kan kayan aiki na musamman
2. The workpiece ya kamata a sanya a cikin wani tasiri dumama yankin