3  Abubuwan da yakamata ku sani game da PDC Brazing

Masu yankan PDC suna gogayya da ƙarfe ko jikin matrix na ɗigon rawar soja na PDC. Bisa ga hanyar dumama, hanyar brazing za a iya raba zuwa harshen wuta brazing, injin brazing, injin watsawa bonding, high-mita induction brazing, Laser katako waldi, da dai sauransu The Flame brazing ne mai sauki aiki da kuma yadu amfani. Yau muna so mu raba kadan game da PDC flame brazing.

Menene harshen wuta?

Harshen harshen wuta hanya ce ta walda wacce ke amfani da harshen wuta da konewar iskar gas ke haifarwa don dumama. Babban tsari na brazing harshen wuta ya hada da pre-weld magani, dumama, adana zafi, sanyaya, bayan walda magani, da dai sauransu.

Menene tsari na PDC flame brazing?

1. Pre-weld magani

(1) sandblast da tsaftace mai yankan PDC da jikin bitar rawar jiki na PDC. Mai yankan PDC da ƙwanƙwasa ba dole ba ne a ƙazantar da mai.

(2) shirya solder da juyi. Kullum muna amfani da 40% ~ 45% azurfa solder don PDC brazing. Ana amfani da juzu'in don hana oxidation yayin brazing.

2. Dumama da adana zafi

(1) Preheat da PDC rawar jiki bit jiki a cikin matsakaici mita tanderu zuwa kusa da 530 ℃.

(2) Bayan preheating, yi amfani da bindigar harshen wuta don dumama jikin bit da abin yankan PDC. Za mu buƙaci bindigogin harshen wuta guda biyu, ɗaya don dumama na'urar rawar jiki da ɗaya don dumama abin yankan PDC.

(3) Narkar da mai siyar a cikin hutun PDC kuma a zafi shi har sai mai siyar ya narke. Saka PDC a cikin rami mai magudanar ruwa, ci gaba da ɗora zafin jiki har sai mai siyar ya narke ya gudana kuma ya cika, sannan a hankali a guje tare da juya PDC yayin aikin siyarwar. Aiwatar da juzu'i zuwa wurin da abin yankan PDC yake buƙatar a yi ƙarfin hali don hana oxidation.

3. Cooling da bayan-weld magani

(1). Bayan masu yankan PDC sun yi tagumi, sanya ɗigon PDC a cikin wurin adana zafi a cikin lokaci, kuma sannu a hankali sanyaya zazzabi na rawar rawar.

(2) Bayan sanyaya rawar rawar jiki zuwa 50-60 °, za mu iya fitar da raƙuman ruwa, sandblast da goge shi. Bincika a hankali ko wurin waldawan PDC yana walda da ƙarfi kuma ko PDC ɗin ta lalace.

Menene yanayin zafi?

The gazawar zazzabi na polycrystalline lu'u-lu'u Layer ne a kusa da 700 ° C, don haka zazzabi na lu'u-lu'u Layer dole ne a sarrafa a kasa 700 ° C a lokacin walda tsari, yawanci 630 ~ 650 ℃.

Idan kuna sha'awar tungsten carbide rods kuma kuna son ƙarin bayani da cikakkun bayanai, zaku iya tuntuɓar mu ta waya ko wasiƙa a hagu, ko aika wasiku a ƙasan shafin.