Kusarudzwa kwenzira yekutonhodza uye yakasimba induction kudziya elbow quenching process paramita

Iyo maitiro maparamendi e induction kupisa uye kudzima anonyanya kureva tembiricha inosimbisa uye yekudzima kutonhora nzira. Pakati pavo, kusarudzwa kwekushisa kwe austenitizing kunonyanya kuenderana nekuwana saizi yakanaka yezviyo, kunaka kwakadzika tembiricha kuoma, uye simba regoho repamusoro uye simba rekusimba. Zvinhu izvi zvinodawo kusanganiswa pamwe chete nekudzikamisa maitiro kuti zvionekwe. Bend mapaipi emagiredhi esimba akasiyana ane zvinodiwa zvakasiyana pakuita kwataurwa pamusoro apa. Tora iyo X80 gokora semuenzaniso kuratidza nzira yekuona yekudzima kwayo maitiro paramita. Iyo kemikari yemuyedzo simbi pombi uye elbow simbi yakanyorwa muTafura 10-1.

Tafura 10-1 Kemikari kuumbwa kwepombi dzesimbi uye magokora ekuedzwa

Sample kemikari inoumbwa (chikamu chezhinji)/%

Cr M N C N N Nb V Ti B Al

Nyere yesimbi A 0. 06 0. 18 1. 78 0. 016 0. 004 0. 18 0. 26 0. 02 0. 06 0.02 0.01 0.01 – 0.03

B 0.05 0.21 1.74 0.018 0. 002 0. 15 0. 18 0.01 0. 07 0. 02 0.01 0.01 0. 001 0. 04

Gororo nyembe muviri 0. 08 0. 17 1. 68 0.010 0. 002 0.09 0. 20 0. 20 0. 05 0. 03 0. 02 0. 15 <0. 0001 0. 03

Weld 0.06 0. 27 1.65 0.012 0. 003 0. 01 0. 26 0. 11 0. 03 0. 02 0. 02 0. 10 <0. 0001 0. 02

Chekutanga, shandisa mapaipi esimbi A uye B, uchishandisa echinyakare yemagetsi muchoto chekudziya nzira murabhoritari kupedzisa zvinotevera zvinoenderana nezviri mukati.

(1) Ukama huri pakati pekudzima tembiricha uye austenite saizi yezviyo Hukama huri pakati pekupisa tembiricha uye saizi yezviyo inoratidzwa muMufananidzo 10-2. Mumamiriro ekuedzwa, austenitize pa1000°C. Mushure mekudzima kwemvura uye kupisa pa500 ° C kwe1h, chiyero chezviyo chinoguma ndecheiyi. Pasi pemamiriro ekugadzira, gokora rinopisa rakanyoroveswa nemvura uye rinoiswa pasi pe500 ° C , Ukuru hwezviyo mushure mekuchengetedza kupisa kwe1h ndeye 13km. Pasi pemamiriro ekuedzwa uye mamiriro ekugadzira, iyo yakawanikwa austenite saizi yezviyo iri padyo. Kubva pakuona kwekudzima tembiricha yekudziya uye saizi yezviyo zvegokora mushure mekurapa kwekupedzisira, zvinofanirwa kuve zvinogoneka kusarudza muganho wepamusoro wekudzima tembiricha kuti usvike 1000 ° C. Ukobvu hwehukuru hwezviyo hune simba guru pakusimba kwegoho uye kushomeka kwekushisa kwegokora. Mumamiriro ezvinhu akajairika, hukuru hwezviyo hunowedzera

Diki, iyo yakakwirira simba regoho regokora, zviri nani kusimba kwakadzika-tembiricha. (2) Hukama huripo pakati petembiricha yekudzima uye kusimba kwekudzikamisa-tembiricha. Pa 10°C, kuoma kwesimba kwe3～0°C hakuchinje zvakanyanya; patembiricha ye40 ° C, kana tembiricha yekudzima yakakwira kupfuura 0 ° C, kuoma kwemhedzisiro kunowanzo kuderera. Kubva pane zviri pamusoro, tembiricha yekudzima yegokora haifanire kudarika 900 ℃ zvakanyanya sezvinobvira.

Hukama huri pakati pekudzima muitiro uye zvemuchina Kudzima muitiro kunosanganisira quenching tembiricha, kutonhora mwero (kutonhora svikiro). Mhedzisiro pakusimba uye kurebesa kwesimbi inoratidzwa muMufananidzo 10-4. Zviri mukati mezvinomwe nzira dzekudzima muMufananidzo 10-4 zvakanyorwa muTebhu 10-2. Iwo matatu macurves ari muFigure 10-4 akateerana anomiririra zvidiki zvinodiwa zve δb, δ0.2, uye δ zve X80 giredhi simbi mapaipi mu APIspec 5L mwero. Kubva pane data muMufananidzo 10-4, zvinogona kuonekwa kuti simba remvura rakadzimwa uye sampuli dzakadzikama, kusanganisira elongation (ona Mufananidzo 10-4), inosangana nezvinodiwa zveyero; nepo mhepo yakanyoroveswa nemafuta-yakanyoroveswa uye yakadzikama samples Simba rayo rakaderera pane chiyero chinodiwa. Zvinogona kuoneka kuti, kubva pakuona kwekudzima tembiricha, iyo 900-1000 ℃ mvura-yakatonhodzwa yekudzima nzira inofambirana neiyo X80 giredhi yekubhenda simbi kupisa kurapwa. Tafura 10-2 Kudzima uye kudziya kurapwa maitiro emagetsi echoto kupisa gokora.

Kwete. Kudzima tembiricha

/r Kubata nguva / min Nzira yekutonhodza Kupisa tembiricha% Kubata nguva / min Nzira yekutonhodza

2 1000 ichiri mhepo

3 1000 yekumanikidzirwa kutonhora kwemhepo

4 1000 30 kutonhora kwemafuta 500 60 kutonhora kwemhepo

5 900 kutonhora kwemvura

6 950 kutonhora kwemvura

7 1000 kutonhora kwemvura

Muchidimbu, kubva pahukama pakati peiyo austenite saizi yezviyo, yakaderera-tembiricha kukanganisa kuoma, kurebesa, simba regoho, kusimba kwesimba uye zvimwe zvivakwa uye tembiricha yekudzima, kutonhora mamiriro, tembiricha yekudzima inofanirwa kuve 900 ~ 1000 fenzi, pfapfaidza mvura inotonhorera. mushure mekudzima. Parizvino, tembiricha yekudzimisa yekudzimisa inoshandiswa pasi pemamiriro ekugadzira i950 ~ 1050 ° C, uye nzira yekutonhora ndeyekupfapfaidza mvura kana kutonhora kwemhepo.