Ihe ọ pụtara ịgba ọkụ na igwe ịgbado ọkụ butt

Preheating bụ usoro dị oke egwu na igwe ịgbado ọkụ butt nke gụnyere iwelite okpomọkụ nke metal ala tupu ịmalite ọrụ ịgbado ọkụ. Ịghọta nzube na uru nke preheating dị mkpa maka welders na ndị ọkachamara na ụlọ ọrụ ịgbado ọkụ. Edemede a na-enyocha mkpa ikpo ọkụ dị na igwe ịgbado ọkụ butt, na-akọwapụta ọrụ ya n'ịhụ na welds na-aga nke ọma na ịkwalite ogo weld.

1. Nkọwa nke Preheating: Preheating na-agụnye ikpo ọkụ metal isi na oke okpomọkụ tupu ịgbado ọkụ. A na-ekpebi ikpo ọkụ na-ekpo ọkụ na-adabere n'ụdị ihe onwunwe, ọkpụrụkpụ, nhazi nkwonkwo, na usoro ịgbado ọkụ.
2. Mgbochi nke mgbawa: Otu n'ime isi ebumnuche nke ikpo ọkụ bụ igbochi mgbawa na nkwonkwo weld. Igwe ọkụ na-ekpo ọkụ na-ebelata ogo okpomọkụ dị n'etiti mpaghara weld na metal ala gbara ya gburugburu, na-ebelata ihe ize ndụ nke mgbawa hydrogen na-akpata na mgbawa oyi.
3. Enyemaka Nchegbu: Preheating na-enyekwara mgbakasị ahụ mgbakasị ahụ n'ala ala. Ọ na-enyere aka belata nrụgide dị n'ime nke usoro ịgbado ọkụ na-akpata, na-ebelata ohere nke mgbagha na nrụgide fọdụrụnụ na weld ikpeazụ.
4. Ike Weld emelitere: Site n'ịkwanye igwe mgbakwasị ụkwụ, nkwonkwo weld ahụ na-enweta ike siri ike na nhịahụ. Nke a na-eduga na welds na elu mmetụta nguzogide na enwekwukwa n'ozuzu n'ibu Njirimara.
5. Mbelata Hydrogen Embrittlement: Ịkpọ ọkụ na-enyere aka ibelata embrittlement hydrogen, nke bụ ihe na-eme ebe atom hydrogen na-agbasa n'ime igwe weld, na-eme ka ọ na-agbaji. Okpomọkụ dị elu n'oge ikpo ọkụ na-eme ka mgbapụ nke hydrogen dị mfe, na-ebelata ihe ize ndụ nke embrittlement.
6. Mmanya weld ka mma: enyemaka na-ekpo ọkụ na-enye aka iji nweta ntinye weld ka mma, ọkachasị n'ihe ndị siri ike. Igwe ọkụ dị elu na-eme ka ígwè dị ala dị nro, na-eme ka ọ dịkwuo mfe maka usoro ịgbado ọkụ ịbanye na nkwonkwo.
7. Ịkwado Ngwakọta Kwesịrị Ekwesị: Ịkpọ ọkụ na-akwalite njikọ kwesịrị ekwesị n'etiti igwe weld na metal ala. Nke a dị oke mkpa mgbe ị na-arụ ọrụ nchara dị elu na ihe ndị ọzọ na-adịkarị mfe ijikọta adịghị mma.
8. Ibelata Mpaghara Okpomọkụ emetụtara (HAZ): Ọkụ ọkụ na-enyere aka ịchịkwa oke mpaghara okpomọkụ emetụtara (HAZ) n'oge ịgbado ọkụ. Obere HAZ na-ebelata ihe ize ndụ nke mgbanwe metallurgical na metal ala, na-echekwa ihe mbụ ya.

Na mmechi, preheating na-arụ ọrụ dị mkpa na igwe ịgbado ọkụ butt site n'ịkwadebe metal base maka ịgbado ọkụ yana hụ na welds na-aga nke ọma. Usoro a na-egbochi mgbawa, na-enye enyemaka nchekasị, na-eme ka ike weld dịkwuo mma, na-ebelata ikuku hydrogen, na-eme ka ntinye weld dịkwuo mma, na-akwalite njikọ kwesịrị ekwesị, ma na-ebelata mpaghara okpomọkụ na-emetụta. Site na iji nlezianya na-emejuputa usoro ikpo ọkụ na-adabere na nkọwapụta ihe na usoro ịgbado ọkụ, welders na ndị ọkachamara nwere ike nweta welds dị elu nke nwere ihe ndị dị elu. Na-ekwusi ike mkpa preheating pụtara na-enye aka na njikarịcha ọrụ ịgbado ọkụ butt, na-eme ka metal dị mma na nke a pụrụ ịdabere na ya na-esonye na ngwa na ụlọ ọrụ dị iche iche.