1. Chii chinonzi quenching soft point
Iyo inonzi quenching soft point inzvimbo isingadzimike yakapfava pazvikamu.Naizvozvo, inonzi zvakare nyoro (softspot) .Nzvimbo yakapfava yekudzima mvura yakanyanya kuoma kupfuura yekudzima mafuta, nekuti kumusoro kune steam film. kunonoka kutonhora.Chiitiko ichi chinowanzozivikanwa seLeiden frosting phenomenon.Kunyange zvazvo kudzima mafuta kusina kukwana kuoma, kureva, kusakwana kudzima, asi hazvisi nyore kukonzera quenching nyoro.Zvisinei, underquenching apo decarbonization kana oxidation ganda. yakafanana neiyo yekudzima nyoro.
Zvinonzi mumwaka wemvura wepramu unowanzo kudzima nyoro, kana hunyoro hwenzvimbo yekudzimisa hunopfuura 55%, inononoka kudzima nyoro.
Kumusoro kwepamusoro-soro quenching parts kunowanzoita barber scar, kana Japanese banga kumucheto, mavara akajeka ari quenching soft point.The microtissue ye quenching soft point is martensite plus pearlophyte yakaonda kwazvo (nodular flexter) ine ruvara rwakajeka.
2. Nzira yekuwana sei quenching soft point
Kazhinji pane nzira nhatu dzekuwana dzakadzimwa dzakapfava pfungwa.Nzira yekutanga ndeyekuona mwenje wetawny ruvara pamusoro pekukuya: nzira yechipiri ndeyokuti nzira yechitatu ndeye kushandisa acid corrosion kuwana quenching nyoro pfungwa;ndiko kuti, kunyudza zvikamu mu 50% hydrochloric acid mvura mhinduro (mvura yakanyorova) nokuda ngura, kana chikamu pamusoro rinoonekwa dema gwapa, dema gwapa ndiyo quenching nyoro pfungwa.Zvisinei, zvinofanira kucherechedzwa kuti yakaderera tembiricha tempering (180) ~200C) zvikamu zvakasvibiswa munzvimbo yakaoma, uye ruvara munzvimbo isina kuoma.Kudzika kwechidzitiro chakadzimwa kunogona kuyerwa uchishandisa nzira iyi.
3. Nzira yekudzivirira sei kudzima kubva panyoro
Kuti udzivise kudzimwa kwezvinyoro zvinyoro, usaita oxidize kana decarbonize zvikamu paunenge uchipisa kutanga.Chechipiri, kuitira kudzivirira pamusoro pezvikamu zvakabatanidzwa nefirimu yemvura inopisa, zvakanakisisa kumutsa zvakakwana mvura inodzima uye kushandisa mvura yakapfapfaidza. Kutonhorera.Kuwedzera, kana kudzima ne10% mvura yemunyu kunogona kudzivirira zvachose kudzimwa kwezvinyoro zvinyoro.Kuwedzera, kushandisa chidimbu chakaonda chehupfu hwekupukuta pamusoro pezvikamu zvekudzima zvakare inzira yakanaka yekudzivirira kudzima kwezvinyoro. mapoinzi.Iyo poda yekupukuta yakatonhodzwa nekukurumidza kupfuura mativi esimbi asina kuvharwa uye haidzimi nzvimbo yakapfava, saka kuisa poda yekupukuta muJapan banga rekudzima inzira yakavanzika.Asi inofanira kutorwa.Kana iyo poda yekupukuta yakanyanyisa, kutonhora kunonoka, hakuna kuoma.
Iyo poda yakasvibiswa yakaonda uye inoshandiswa pamusoro pezvikamu zvekudzima, uye kana kudzima, nzvimbo yacho haina kukomberedzwa nefirimu yemhepo, iyo inova mabhuru maduku uye inosimuka zvakasimba, saka inotonhora nokukurumidza.
Semugadziri wekupfekedza, kuwedzera kune poda yekupukuta.Nemadota nekaolin nemvura;mica isina ivhu rakapfava nemvura: pumice nevhu rakapfava nemvura, aya anonzi mabikirwo akanaka.
Munguva ichangopfuura, mvura-soluble quenching solution (polymer quenching solution) inoshandiswa zvakanyanya panzvimbo yekudzima mafuta, iyo ine inverse solubility uye inogona kuumba firimu pamusoro kana inopisa nezvikamu zvakarapwa.Kana tembiricha inodonha kusvika pa90 ℃ (mamwe magadziriso ari 74 ℃), iyo mask yepasi inonyungudika. Naizvozvo, kutonhora mukati metembiricha yepamusoro kunogona kuitwa zvakaenzana kudzivirira kudzimwa kwezvinyoro zvinyoro. kuzora poda yekupolisha nayo}
Uye zvakare, kana iyo ultrasonic kutonhora ” 25000 mavhiki / s), iyo mhute firimu inogona zvakare kubviswa zvinobudirira, saka kudzima kwemapoinzi akapfava kunogona kudziviswa.Ultrasonic kutonhora inzira nyowani yekutonhora.
Shandong Jute Steel Pipe Co.,Ltd.
Contacts: Mr. Ji
WhatsApp: +86 18865211873
WeChat: +86 18865211873
E-mail: jutesteelpipe@gmail.com
E-mail: juteguanye@aliyun.com
Nguva yekutumira: Mar-12-2022
