Maganin zafin jiki ya kasu kashi biyu: ɗaya shine quenching surface da yanayin zafi, ɗayan kuma shine maganin zafin jiki. Hanyar gwajin taurin shine kamar haka:
1. surface quenching da tempering zafi magani
quenching surface da zafin zafin jiki yawanci ana yin shi ta hanyar dumama shigar da wuta ko dumama harshen wuta. Babban ma'auni na fasaha shine taurin saman, taurin gida da ingantaccen zurfin Layer. Za a iya amfani da ma'aunin taurin Vickers ko Rockwell hardness tester don gwajin taurin. Ƙarfin gwaji Zaɓin yana da alaƙa da zurfin ingantaccen Layer mai ƙarfi da taurin saman kayan aikin. Akwai injunan tauri guda uku a nan.
(1) Mai gwada taurin Vickers wata hanya ce mai mahimmanci don gwada taurin saman kayan aikin da aka yi wa zafi. Yana iya amfani da ƙarfin gwaji na 0.5-100KG don gwada taurin saman ƙasa kamar bakin ciki kamar kauri 0.05mm. Daidaiton sa yana da girma kuma yana iya bambanta kayan aikin da aka yi da zafi. Dan kadan bambanci a cikin taurin surface, Bugu da kari, zurfin da tasiri taurare Layer kuma gano da Vickers taurin magwajin, don haka wajibi ne a ba da wani Vickers taurin gwajin ga raka'a cewa gudanar da surface zafi magani aiki ko amfani da babban adadin surface zafi jiyya workpieces.
(2) Gwajin taurin saman Rockwell shima ya dace sosai don gwada taurin kayan aikin da aka kashe. Akwai ma'auni guda uku don ma'aunin taurin saman Rockwell don zaɓar daga. Yana iya gwada daban-daban saman taurare workpieces wanda tasiri taurare Layer zurfin wuce 0.1mm. Kodayake daidaiton ma'aunin taurin dutsen Rockwell bai kai na na'urar gwajin taurin Vickers ba, zai iya riga ya cika buƙatun azaman hanyar ganowa don kulawa da inganci da kuma gwajin cancantar tsire-tsire masu zafi. .Bayan haka, yana da halaye na aiki mai sauƙi, amfani mai dacewa, ƙarancin farashi, saurin ma'auni, da karatun kai tsaye na ƙimar taurin. Za a iya amfani da gwajin taurin saman Rockwell don gano batches na kayan aikin da aka yi wa zafi da sauri da sauri kuma ba tare da lalacewa ba. Yana da matukar muhimmanci ga masana'antun sarrafa karafa da injina. Lokacin da saman zafi mai taurin Layer ya yi kauri, ana iya amfani da ma'aunin taurin Rockwell. Lokacin kauri mai kauri na maganin zafi shine 0.4-0.8mm, ana iya amfani da sikelin HRA. Lokacin da zurfin Layer Idan ya wuce 0.8mm, ana iya amfani da sikelin HRC. Vickers, Rockwell da Rockwell na sama na sama suna iya jujjuya daidaitattun daidaitattun ƙima guda uku cikin sauƙi cikin juna, canzawa zuwa ma'auni, zane ko ƙimar taurin da masu amfani ke buƙata, kuma madaidaicin tebur ɗin juyawa yana cikin daidaitattun ISO na duniya. An ba da ma'aunin ASTM na Amurka da ma'aunin GB/T na kasar Sin.
(3) Lokacin da kauri mai tauri mai zafi ya fi 0.2mm, ana iya amfani da gwajin taurin Leeb, amma ana buƙatar zaɓar firikwensin nau'in C. Lokacin aunawa, ya kamata a biya hankali ga ƙarewar saman da kuma gaba ɗaya kauri na kayan aikin. Wannan hanyar auna ba ta da Vickers da Rockwell Mai gwada taurin kai daidai ne, amma ya dace da auna wurin a masana'anta.
2. maganin zafin jiki
Chemical zafi jiyya shi ne infiltrate surface na workpiece da zarra na daya ko dama sinadaran abubuwa, game da shi canza sinadaran abun da ke ciki, tsari da kuma yi na surface na workpiece. Bayan quenching da ƙananan zafin jiki tempering, saman workpiece yana da high taurin da sa juriya. da kuma tuntuɓar ƙarfin gajiya, kuma ainihin kayan aikin yana da ƙarfi da ƙarfi. Babban ma'auni na fasaha na aikin aikin maganin zafi na sinadarai shine zurfin daɗaɗɗen Layer da taurin saman. Nisan da taurin ya ragu zuwa 50HRC shine ingantaccen zurfin Layer. A surface taurin gwajin na sinadaran zafi bi workpieces yayi kama da taurin gwajin na surface quenched zafi bi workpieces. Za a iya amfani da masu gwajin taurin Vickers, masu gwajin taurin saman Rockwell ko kuma na'urar gwajin taurin Rockwell. Gwajin taurin don ganowa, kawai kauri na nitriding mai kauri ya fi sirara, gabaɗaya bai wuce 0.7mm ba, sannan ba za a iya amfani da gwajin taurin Rockwell ba.
3. maganin zafi na gida
Idan gida zafi jiyya sassa na bukatar high gida taurin, na gida quenching zafi magani za a iya za'ayi ta wajen shigar da dumama, da dai sauransu Irin wannan sassa yawanci bukatar alama matsayi na gida quenching zafi magani da gida taurin darajar a kan zane, da kuma taurin gwajin sassa ya kamata a za'ayi a cikin yankin da aka keɓe , da taurin gwajin kayan aiki na iya amfani da Rockwell hardness tester gwada HRC taurin darajar. Idan mai taurin zafin maganin zafi ba shi da zurfi, ana iya amfani da mashin gwajin taurin Rockwell don gwada ƙimar taurin HRN.
Lokacin aikawa: Fabrairu-22-2023
