3 Yam Koj Yuav Tsum Paub Txog PDC Brazing

PDC cutters yog brazed rau cov hlau los yog matrix lub cev ntawm PDC laum ntsis. Raws li cov txheej txheem cua sov, txoj kev brazing tuaj yeem muab faib ua cov nplaim hluav taws xob, lub tshuab nqus tsev, lub tshuab nqus tsev vacuum diffusion bonding, high-frequency induction brazing, laser beam vuam, thiab lwm yam. Niaj hnub no peb xav qhia me ntsis txog PDC nplaim taws brazing.

Cov nplaim taws yog dab tsi?

Nplaim brazing yog ib txoj kev vuam uas siv cov nplaim hluav taws uas tsim los ntawm cov roj combustion rau cua sov. Cov txheej txheem tseem ceeb ntawm nplaim taws brazing suav nrog kev kho ua ntej-weld, cua sov, txuag hluav taws xob, txias, kev kho tom qab vuam, thiab lwm yam.

Cov txheej txheem ntawm PDC nplaim taws yog dab tsi?

1. Pre-weld kev kho mob

(1) sandblast thiab ntxuav PDC cutter thiab PDC laum lub cev. PDC cutter thiab laum ntsis yuav tsum tsis txhob stained nrog roj.

(2) npaj solder thiab flux. Peb feem ntau siv 40% ~ 45% nyiaj solder rau PDC brazing. Cov flux yog siv los tiv thaiv oxidation thaum brazing.

2. Kev txuag hluav taws xob thiab cua sov

(1) Preheat lub PDC laum me ntsis lub cev rau hauv nruab nrab zaus rauv rau ib ncig ntawm 530 ℃.

(2) Tom qab preheating, siv cov nplaim taws kom sov lub cev thiab PDC cutter. Peb yuav xav tau ob rab phom phom, ib qho rau cua sov ntawm lub tshuab laum lub cev thiab ib qho rau cua sov ntawm PDC cutter.

(3) Dissolve lub solder nyob rau hauv lub PDC recess thiab kub kom txog thaum lub solder melts. Muab PDC tso rau hauv qhov concave, txuas ntxiv kom sov lub laum lub cev kom txog rau thaum lub solder yog yaj thiab ntws thiab ntws, thiab maj mam khiav thiab tig PDC thaum lub sij hawm soldering. Siv cov flux rau qhov chaw uas PDC cutter yuav tsum tau brazed los tiv thaiv oxidation.

3. Kev kho cua txias thiab tom qab vuam

(1). Tom qab cov PDC cutters yog brazed, muab PDC laum me ntsis rau hauv qhov chaw txuag hluav taws xob hauv lub sijhawm, thiab maj mam txias qhov kub ntawm lub laum me ntsis.

(2) Tom qab txias lub laum me ntsis rau 50-60 °, peb tuaj yeem tshem tawm lub laum me ntsis, sandblast thiab polish nws. Ua tib zoo xyuas seb PDC qhov chaw vuam puas yog welded ruaj khov thiab seb PDC puas welded puas.

Lub brazing kub yog dab tsi?

Qhov kub tsis ua haujlwm ntawm polycrystalline pob zeb diamond txheej yog nyob ib ncig ntawm 700 ° C, yog li qhov kub ntawm cov pob zeb diamond txheej yuav tsum tau tswj hauv qab 700 ° C thaum lub sij hawm vuam, feem ntau yog 630 ~ 650 ℃.

Yog tias koj txaus siab rau tungsten carbide rods thiab xav tau cov ntaub ntawv ntau ntxiv thiab cov ntsiab lus, koj tuaj yeem tiv tauj peb hauv xov tooj lossis xa ntawv ntawm sab laug, lossis xa mus rau US MAIL hauv qab ntawm nplooj ntawv.