Hauv cov txheej txheem tsim pwm, qhov tsim ntawm pwm feem ntau yuav tsum tau polished nto.Mastering lub tshuab polishing tuaj yeem txhim kho qhov zoo thiab kev pabcuam lub neej ntawm cov pwm thiab yog li txhim kho cov khoom zoo.Kab lus no yuav qhia txog txoj hauv kev ua haujlwm thiab txheej txheem ntawm pwm polishing.
1. Pwm polishing txoj kev thiab txoj hauv kev ua haujlwm
Pwm polishing feem ntau yog siv roj pob zeb strips, wool log, sandpaper, thiab lwm yam., yog li ntawd lub nto ntawm cov khoom yog plastically deformed thiab lub convex feem ntawm lub nto ntawm lub workpiece raug tshem tawm kom tau ib tug du nto, uas yog feem ntau ua los ntawm tes. .Cov txheej txheem ntawm kev sib tsoo super-nplua thiab polishing yog xav tau rau qhov zoo ntawm qhov chaw.Kev sib tsoo super zoo thiab polishing yog ua los ntawm cov cuab yeej sib tsoo tshwj xeeb.Nyob rau hauv cov kua polishing uas muaj abrasive, nws yog nias tawm tsam machined nto los ua high-speed rotary suab.Polishing tuaj yeem ua tiav qhov roughness ntawm Ra0.008μm.
2. Cov txheej txheem polishing
(1) polished ntxhib
Fine machining, EDM, sib tsoo, thiab lwm yam tuaj yeem ua polished nrog lub rotating nto polisher nrog kev sib hloov ceev ntawm 35 000 rau 40 000 r / min.Tom qab ntawd muaj ib phau ntawv roj pob zeb sib tsoo, sawb ntawm cov roj pob zeb ntxiv rau kerosene ua cov roj nplua nyeem lossis cov khoom ua kom txias.Qhov kev txiav txim ntawm kev siv yog 180 # → 240 # → 320 # 400 # → 600 # 800 # → 1 000 #.
(2) Semi-zoo polishing
Semi-finishing tsuas yog siv cov ntawv xuab zeb thiab kerosene.Tus naj npawb ntawm cov ntawv xuab zeb yog nyob rau hauv kev txiav txim:
400 # → 600 # 800 # → 1000 # 1200 # → 1500 #.Qhov tseeb, #1500 sandpaper tsuas yog siv cov hlau pwm tsim nyog rau kev ua kom tawv tawv (tso dua 52HRC), thiab tsis haum rau cov hlau ua ntej, vim tias nws yuav ua rau muaj kev puas tsuaj rau saum npoo ntawm cov hlau ua ntej thiab tsis tuaj yeem ua tiav cov nyhuv polishing.
(3) Zoo polishing
Fine polishing mas siv pob zeb diamond abrasive muab tshuaj txhuam.Yog tias sib tsoo nrog cov ntaub polishing log los sib tov pob zeb diamond abrasive hmoov lossis abrasive muab tshuaj txhuam, qhov kev sib tsoo ib txwm yog 9 μm (1 800 #) → 6 μm (3 000 #) → 3 μm (8 000 #).Lub 9 μm pob zeb diamond muab tshuaj txhuam thiab polishing daim ntaub log tuaj yeem siv los tshem tawm cov cim plaub hau ntawm 1 200 # thiab 1 50 0 # ntawv xuab zeb.Kev polishing yog tom qab ntawd ua tiav nrog kev xav thiab pob zeb diamond muab tshuaj txhuam hauv qhov kev txiav txim ntawm 1 μm (14 000 #) → 1/2 μm (60 000 #) → 1/4 μm (100 000 #).
(4) Polished ua hauj lwm ib puag ncig
Cov txheej txheem polishing yuav tsum tau nqa tawm nyias ntawm ob qhov chaw ua haujlwm, uas yog, qhov chaw ua haujlwm sib tsoo ntxhib thiab qhov chaw ua haujlwm polishing zoo sib cais, thiab kev saib xyuas yuav tsum tau saib xyuas kom huv si cov xuab zeb seem ntawm qhov chaw ua haujlwm yav dhau los. txheej txheem.
Feem ntau, tom qab polishing ntxhib nrog roj pob zeb mus rau 1200 # sandpaper, lub workpiece yuav tsum tau polished kom huv si tsis muaj plua plav, kom ntseeg tau tias tsis muaj plua plav hauv huab cua ua raws li pwm nto.Cov kev xav tau raug siab dua 1 μm (xws li 1 μm) tuaj yeem ua tiav hauv chav polishing huv.Txhawm rau polishing meej dua, nws yuav tsum nyob hauv qhov chaw huv huv, vim tias cov plua plav, pa taws, dandruff thiab cov dej ntws tuaj yeem khawb qhov chaw polished siab.
Tom qab cov txheej txheem polishing tiav, qhov saum npoo ntawm lub workpiece yuav tsum tau tiv thaiv los ntawm hmoov av.Thaum cov txheej txheem polishing nres, tag nrho cov abrasives thiab lubricants yuav tsum tau ua tib zoo tshem tawm kom ntseeg tau tias qhov chaw ntawm lub workpiece yog huv si, thiab tom qab ntawd ib txheej ntawm pwm los tiv thaiv xeb txheej yuav tsum tau txau rau saum npoo ntawm lub workpiece.
Post lub sij hawm: Jan-10-2021