Yuav ua li cas kom tswj tau qhov tsis zoo ntawm lub tshuab nqus ntses ntab?

Nov 24, 2025

Tso lus

Cov khoom siv tseem ceeb ntawm lub tshuab tsim khoom noj dev muaj xws li cov ntsia hlau, lub tes tsho, lub taub hau tuag, thiab cutter. Cov khoom no, vim yog kev sib cuag ncaj qha nrog cov khoom siv raw, tiv taus extrusion, kev sib txhuam, thiab kub kub, ua rau hnav sai. Nkag siab txog lawv cov yam ntxwv ntawm cov qauv thiab cov qauv hnav, thiab siv cov kev ntsuas kev tshawb fawb, tuaj yeem ua rau lawv lub neej ua haujlwm tau zoo thiab txo cov nqi tsim khoom. Nyob rau hauv ib lub me me ntses noj pellet tshuab, cov ntsia hlau yog ib qho tseem ceeb hnav ib feem, nrog cov qauv coj feem ntau concentrated nyob rau sab saum toj thiab sab ntawm cov ntsia hlau ridges. Sab saum toj ntawm cov ntsia hlau ridges yog qhov chaw tseem ceeb hauv kev sib cuag nrog cov khoom siv raw; ntev -lub sij hawm extrusion thiab kev sib txhuam tuaj yeem txo qhov siab ntawm cov ntsia hlau ridges, cuam tshuam cov nyhuv extrusion. Ob sab ntawm cov ntsia hlau ridges hnav vim yog lub zog sab nraud ntawm cov khoom siv raw, ua rau muaj qhov sib txawv ntawm cov ntsia hlau thiab lub tes tsho thiab txo qis hauv siab. Cov ntsia hlau tus qauv tsim twb txiav txim siab hnav; siab -cov ntsia hlau zoo siv "sab saum toj hardening" kev kho mob, qhov hnav- cov hlau tiv taus yog welded rau saum cov ntsia hlau ridges, ua tiav qhov hardness ntawm HRC65 los yog siab dua, ncua lub neej kev pab cuam los ntawm 50% piv rau cov ntsia hlau zoo tib yam. Thaum lub sij hawm niaj hnub tu, hnav ntawm cov ntsia hlau threads yuav tsum tau xyuas tsis tu ncua. Thaum hnav tshaj 1/3 ntawm qhov siab qub, nws yuav tsum tau kho los ntawm vuam.

Nyob rau tib lub sijhawm, xyuas kom cov ntaub ntawv raw yog huv los tiv thaiv cov hlau impurities los ntawm kev nkag mus rau hauv lub expansion chamber thiab ua rau kom ceev nrooj hnav. Thaum siv, cov ntsia hlau ceev yuav tsum tau hloov kho raws li cov yam ntxwv ntawm cov khoom siv raw kom tsis txhob muaj overloading thiab hnav ntau dhau.

Lub tes tsho ntsia hlau ua haujlwm nrog cov ntsia hlau, thiab nws qhov hnav feem ntau tshwm sim ntawm phab ntsa sab hauv. Sab hauv phab ntsa ntawm lub tes tsho ntsia hlau yog nyob ze rau ntawm cov ntsia hlau threads; ntev - kev sib txhuam lub sij hawm yuav ua rau grooved hnav ntawm phab ntsa sab hauv, ua rau kom tshem tawm thiab txo qhov nthuav dav. Lub tes tsho ntsia hlau txais kev sib cais qauv tsim, uas yooj yim rau kev hloov pauv ntawm tus kheej yam tsis hloov tag nrho cov chav nthuav dav, txo cov nqi tu. Nws yog ua los ntawm siab -chromium alloy cam khwb cia hlau, thiab sab hauv phab ntsa yog quenched mus rau ib tug hardness ntawm HRC58-62. Thaum lub sij hawm tu, qhov clearance ntawm lub tes tsho thiab cov ntsia hlau tuaj yeem ntsuas nrog lub ntsuas ntsuas.

Thaum lub clearance tshaj 0.5 hli, lub tes tsho ntsia hlau yuav tsum tau hloov tam sim ntawd. Txhawm rau txo qhov hnav, siab - roj roj yuav tsum tsis tu ncua rau cov mating nto ntawm lub tes tsho threaded thiab cov ntsia hlau. Cov roj yuav tsum yog hom resistant rau kub siab tshaj 150℃los tiv thaiv tsis ua hauj lwm ntawm kub kub. Ib txhij, cov dej noo ntawm cov khoom siv raw yuav tsum tau tswj ntawm 15% thiab 18%. Tsis tshua muaj cov ntsiab lus noo noo yuav ua rau kom cov coefficient ntawm kev sib txhuam ntawm cov khoom siv raw, nrawm hnav ntawm lub tes tsho threaded.

Hnav ntawm lub taub hau tuag feem ntau yog tsom rau ntawm phab ntsa sab hauv thiab lub ntsej muag kawg ntawm lub qhov tuag. Vim lub sij hawm ntev - extrusion ntawm cov khoom siv raw, cov phab ntsa sab hauv ntawm lub qhov tuag yuav loj dua thiab ua ntxhib, ua rau cov kab me me loj dua thiab nce burrs. Lub ntsej muag kawg ntawm lub taub hau tuag yuav hnav vim muaj kev sib txhuam nrog lub tshuab txiav, cuam tshuam rau kev txiav qhov tseeb. Lub taub hau tuag tau txais qhov "ceev- tso tawm" tus qauv tsim, ua rau kev hloov pauv thiab kev saib xyuas yooj yim heev. Qee qhov siab -kawg tuag muaj qhov "hloov tuag core" tsim; Thaum lub qhov tuag qhov hnav, tsuas yog cov tub ntxhais tuag yuav tsum tau hloov, tsis tas yuav hloov tag nrho lub taub hau tuag, txo cov nqi tu. Lub taub hau tuag yog ua los ntawm cemented carbide, thiab sab hauv phab ntsa ntawm lub qhov tuag yog polished. Rau kev saib xyuas niaj hnub, tom qab txhua hnub tsim khoom, siv cov cuab yeej tshwj xeeb los ntxuav cov khoom seem ntawm qhov tuag los tiv thaiv kev ua kom khov thiab txhaws. Txhua lub lim tiam, siv cov ntawv xuab zeb zoo los txhuam lub taub hau tuag lub ntsej muag los kho cov hnav me. Thaum lub qhov tuag qhov taub loj dua li 0.2 hli, cov tub ntxhais tuag lossis lub taub hau tuag yuav tsum tau hloov.

Hnav ntawm lub cutter nyob rau hauv ib tug me me ntses noj tshuab feem ntau manifests raws li ib tug dulling ntawm cov hniav, ua rau uneven pellet txiav thiab inconsistent lengths. Lub cutter siv ib tug adjustable tsim; qhov sib txawv ntawm cov hniav thiab lub taub hau tuag tuaj yeem tswj tau los ntawm kev kho qhov ntsia hlau. Thaum cov hniav poob qis, nws tuaj yeem siv txuas ntxiv mus rau lub sijhawm los ntawm kev kho qhov sib txawv. Lub cutter yog ua los ntawm high- steel ceev los yog tungsten steel. High-cov hlau cutters ceev yog tsawg- nqi tab sis muaj lub neej luv luv (kwv yees li 500 teev), thaum tungsten steel cutters muaj peev xwm muaj sia nyob ntev dua 2000 teev, tsim nyog rau lub sijhawm ntev - ntau lawm. Thaum kho, tsis tu ncua xyuas cov hniav hnav. Thaum cov pellets qhia pom tseeb burrs lossis qhov yuam kev ntev tshaj ± 0.5mm, lub cutter yuav tsum tau sharpened los yog hloov. Thaum sharpening, tuav lub kaum sab xis ntawm lub kaum sab xis (feem ntau yog 30 degree) kom tsis txhob muaj kev sib tsoo tsis raug cuam tshuam rau cov nyhuv pelleting. Thaum lub sijhawm tsim khoom, xyuas kom muaj qhov sib txawv nruab nrab ntawm lub tshuab txiav thiab lub taub hau tuag kom tsis txhob hnav ntau dhau ntawm ib sab.

Dhau li ntawm cov lus hais saum toj no, cov khoom siv cov ntsaws ruaj ruaj kuj yooj yim saib tsis tau cov khoom siv, xws li cov hlua khi hauv qhov chaw nthuav dav thiab cov gaskets hauv cov khoom noj. Txawm hais tias lawv cov qauv yog qhov yooj yim, kev foob tsis ua haujlwm tuaj yeem ua rau cov khoom siv raw thiab kev poob siab. Cov ntsaws ruaj ruaj no yog ua los ntawm siab - kub resistant thiab hnav - resistant silicone roj hmab. Kev saib xyuas tsis tu ncua yuav tsum tau kuaj xyuas cov ntsaws ruaj ruaj thiab hloov cov khoom hnav lossis puas tsuaj sai sai.

Kev hnav ntawm cov khoom tsis zoo no kuj tseem cuam tshuam nrog cov khoom siv raw. Thaum ua haujlwm siab - cov ntaub ntawv hardness (xws li plhaub hmoov thiab pob zeb hmoov), kev pub mis ceev yuav tsum raug txo kom txo qis hnav. Thaum ua haujlwm siab - cov ntaub ntawv noo noo, cov khoom siv tu kom huv yog tsim nyog los tiv thaiv cov khoom adhesion thiab nrawm hnav. Los ntawm kev nkag siab txog cov yam ntxwv ntawm cov khoom tsis zoo thiab siv lub tswv yim ntawm "kev tshuaj xyuas tsis tu ncua, kev saib xyuas kev tshawb fawb, thiab kev siv tsim nyog," lawv lub neej kev pabcuam tuaj yeem txuas ntxiv tau zoo, kev saib xyuas cov nqi txo, thiab lub sijhawm ntev - lub sijhawm ua haujlwm ruaj khov ntawm lub tshuab pub ntses me me kom ntseeg tau.