Mukugadzira maitiro emhepo shongwe yemagetsi, welding inzira yakakosha.Hunhu hwewelding hunokanganisa zvakananga kugadzirwa kwemhando yeshongwe.Naizvozvo, zvinodikanwa kuti unzwisise zvikonzero zve weld defects uye akasiyana ekudzivirira matanho.
1. Mhepo gomba uye slag kubatanidzwa
Porosity: Porosity zvinoreva mhango inoumbwa kana gasi riri mudziva rakanyungudutswa rikasabuda simbi isati yaoma uye inoramba iri mumoto.Gasi rayo rinogona kutorwa nedziva rakanyungudutswa kubva kunze, kana kuti rinogona kugadzirwa nekuita muwelding metallurgy process.
(1) Zvikonzero zvikuru zvemakomba emhepo: pane ngura, tsvina yemafuta, nezvimwewo pamusoro pesimbi yepasi kana yekuzadza simbi, uye huwandu hwemakomba emhepo huchawedzera kana iyo welding tsvimbo uye flux isina kuomeswa, nekuti ngura. , kusvibiswa kwemafuta, uye kunyorova kwekuputira uye kuyerera kwetsvimbo yewelding inoora kuita gasi pakupisa kwakanyanya, zvichiwedzera zviri mugasi musimbi inodziya.Iyo welding line simba idiki kwazvo, uye kumhanya kutonhora kwedziva rakanyungudutswa rakakura, izvo zvisingaite kuti gasi ribude.Kusakwana deoxidation ye weld metal kunowedzerawo oxygen porosity.
(2) Kukuvadza kwemabhomba: mabhomba ekuputira anoderedza inobudirira chikamu chechikamu che weld uye kusunungura weld, nokudaro kuderedza simba uye plastiki yejoini uye kukonzera kubuda.Porosity zvakare chinhu chinokonzera kushushikana mupfungwa.Hydrogen porosity inogonawo kuita kuti kutonhora kutsemuka.
Matanho ekudzivirira:
a.Bvisa tsvina yemafuta, ngura, mvura uye sundries kubva kune welding wire, groove inoshanda uye nzvimbo dzayo dziri padyo.
b.Alkaline welding rods uye fluxes zvichashandiswa uye zvakanyatsoomeswa.
c.DC reverse yekubatanidza uye pfupi arc welding ichagamuchirwa.
D.Preheat usati welding kuti unonoke kutonhora kwekukurumidza.
E. Welding ichaitwa neyakada kusimba.
Crackle
Matanho ekudzivirira kuparuka kwekristaro:
a.Deredza zviri mukati mezvinhu zvinokuvadza zvakaita sesarufa uye phosphorus, uye weld nemidziyo ine yakaderera kabhoni.
b.Zvimwe alloy zvinhu zvinowedzerwa kudzikisa columnar makristasi uye kupatsanura.Semuenzaniso, aluminium nesimbi zvinogona kunatsa zviyo.
c.Iyo weld ine kudzika kupinza ichashandiswa kunatsiridza mamiriro ekupisa kupisa kuitira kuti iyo yakaderera inonyungudika zvinhu zvinoyangarara pamusoro weld pamusoro uye zvisavepo mune weld.
d.Welding zvirevo zvichasarudzwa zvine musoro, uye preheating uye mushure mekupisa kuchagamuchirwa kudzikisa mwero wekutonhora.
e.Adopt inonzwisisika gungano kutevedzana kuderedza welding kusagadzikana.
Matanho ekudzivirira kutsemuka zvakare:
a.Ngwarira kusimba kwekusimbisa kwemetallurgical elements uye simba ravo pakudzorerazve kuputika.
b.Preheat zvine musoro kana shandisa afterheat kudzora mwero wekutonhora.
c.Deredza zvakasara kushushikana kuti usanyanya kunetseka.
d.Panguva yekupisa, dzivirira tembiricha yenzvimbo yekupisa patsva kana kupfupisa nguva yekugara munzvimbo ino yekushisa.
Matanho ekudzivirira kutsemuka kunotonhora:
a.Yakaderera hydrogen mhando alkaline welding tsvimbo ichashandiswa, yakaomeswa zvakanyanya, inochengetwa pa100-150 ℃, uye inoshandiswa kana ichitora.
b.Iyo tembiricha yekupisa ichawedzerwa, matanho ekupisa emashure anotorwa, uye tembiricha yepakati haizove yakaderera pane tembiricha yekupisa.Iyo inonzwisisika welding yakatarwa ichasarudzwa kudzivirira brittle uye yakaoma zvimiro mu weld.
c.Sarudza inonzwisisika welding kutevedzana kudzikisa welding deformation uye welding kusagadzikana.
d.Kuitisa hydrogen kubvisa kupisa kurapwa munguva mushure mekugadzira
Nguva yekutumira: Nov-08-2022