Tsarin Sintering Tungsten Carbide

Kamar yadda muka sani, tungsten carbide yana daya daga cikin mafi wuya kayan aiki a cikin masana'antu na zamani. Don samar da tungsten carbide samar, dole ne ya fuskanci kewayon hanyoyin masana'antu, kamar hadawa foda, rigar milling, feshi bushewa, latsa, sintering, da kuma ingancin duba. A lokacin sintering, ƙarar simintin carbide zai ragu da rabi. Wannan labarin shine don sanin abin da ya faru da tungsten carbide yayin sintering.

A lokacin sintering, akwai matakai hudu da tungsten carbide dole ne ya dandana. Su ne:

1. Cire gyare-gyaren gyare-gyare da mataki na farko na ƙonawa;

2. M-lokaci sintering mataki;

3. Liquid-lokaci sintering mataki;

4. Matakin sanyaya.

1. Cire gyare-gyaren gyare-gyare da mataki na farko na ƙonawa;

A cikin wannan tsari, ya kamata a ƙara yawan zafin jiki a hankali, kuma wannan mataki ya faru a kasa 1800 ℃. Yayin da zafin jiki ya ƙaru, danshi, iskar gas, da sauran sauran kaushi a cikin matsi na tungsten carbide a hankali yana ƙafe. Wakilin gyare-gyare zai ƙara abun ciki na carbon na siminti mai siminti. A cikin sintering daban-daban, haɓakar abun ciki na carbide ya bambanta. Har ila yau, an kawar da damuwa na lamba tsakanin ƙwayoyin foda a hankali yayin karuwar yawan zafin jiki.

2. M-lokaci sintering mataki

Yayin da zafin jiki yana karuwa a hankali, ƙaddamarwa yana ci gaba. Wannan mataki yana faruwa tsakanin 1800 ℃ da eutectic zafin jiki. Abin da ake kira eutectic zafin jiki yana nufin mafi ƙarancin zafin jiki wanda ruwa zai iya kasancewa a cikin wannan tsarin. Wannan mataki zai ci gaba bisa matakin karshe. Ruwan filastik yana ƙaruwa kuma jikin da aka lalata yana raguwa sosai. A wannan lokacin, ƙarar tungsten carbide yana raguwa a fili.

3. Liquid lokaci sintering mataki

A wannan mataki, zafin jiki yana tashi har sai ya kai ga mafi girman zafin jiki a cikin tsarin siginar, yanayin zafin jiki. Lokacin da yanayin ruwa ya bayyana akan tungsten carbide, raguwa yana ƙarewa da sauri. Saboda yanayin tashin hankali na lokaci na ruwa, ƙwayoyin foda suna kusanci juna, kuma pores a cikin barbashi suna cika da ruwa lokaci.

4. Matakin sanyaya

Bayan yin gyare-gyare, ana iya cire carbide da aka yi da siminti daga tanderun da aka sanyaya kuma a sanyaya zuwa zafin jiki. Wasu masana'antu za su yi amfani da zafin datti a cikin tanderun da ke daɗaɗawa don sabon amfani da zafi. A wannan lokaci, yayin da zafin jiki ya ragu, an kafa microstructure na ƙarshe na gami.

Sintering tsari ne mai tsananin gaske, kuma zzbetter na iya ba ku ingantaccen carbide tungsten. Idan kuna sha'awar samfuran carbide tungsten kuma kuna son ƙarin bayani da cikakkun bayanai, zaku iya tuntuɓar mu ta waya ko wasiƙa a hagu, ko Aika wasiƙun Amurka a kasan shafin.