1. Rough substrate nto ua ntej plating: Yog hais tias lub substrate nws tus kheej yog ntxhib tom qab tig los yog sib tsoo, electroplating yuav "replicate" qhov tsis xws luag. Lub substrate yuav tsum tau finely hauv av los yog polished ua ntej kom ib tug nto roughness Ra tsawg dua los yog sib npaug rau 0.4μm ua ntej plating; chemical polishing lossis electrolytic polishing pretreatment kuj tuaj yeem siv los txhim kho kev sib luag.
2. Improper control of electroplating parameters: Excessive current density, unstable plating solution temperature, or imbalanced composition (such as excessive trivalent chromium or an unbalanced sulfuric acid ratio) will lead to coarse crystals. Lub plating tov ratio yuav tsum tau kho kom tswj tau qhov CrO₃ concentration ntawm 250–300 g / L, tswj lub anode-cathode cheeb tsam piv ntawm 1:5 txog 1:10, thiab siv mem tes electroplating tshuab kom tau ib tug denser txheej.
3. Tsis nco qab lawm- cov kauj ruam kho: Ua tsis tiav dov, ultra- zoo sib tsoo, los yog iav polishing tom qab plating tuaj yeem ua rau tus nqi siab Ra. Roller burnishing tuaj yeem siv los txo qhov roughness los ntawm kev ua haujlwm txias, thaum txhim kho hnav tsis kam thiab qaug zog. Rau siab - qhov yuav tsum tau ua kom raug, ultra- kev sib tsoo zoo lossis cov tshuab polishing tau pom zoo kom txo Ra kom qis dua 0.2.
4. Pinholes, pits, los yog nodules nyob rau hauv lub plating txheej feem ntau tshwm sim los ntawm tshem tawm impurities nyob rau hauv lub plating tov, tsis tiav degreasing, los yog gas retention. Cov tshuaj plating yuav tsum tau lim kom tshem tawm cov khoom; pretreatment yuav tsum tau ntxiv dag zog kom ntseeg tau tias tsis muaj roj lossis oxide nplai; lub fixture tsim yuav tsum tau optimized kom tsis txhob muaj huab cua hnab ris thiab xyuas kom meej du gas paug.
Rework Cov lus pom zoo
1. me ntsis dhau qhov txwv (Ra me ntsis siab dua 0.8μm): Sib tsoo thiab polishing tuaj yeem ua ncaj qha los kho Ra kom qis dua 0.4. Qhov no yog tsim rau cov kev taw qhia dav dav shafts lossis txhawb nqa rods.
2. Pom tseeb roughness lossis cov cim cuab yeej: Nws raug nquahu kom tshem cov plating thiab rov-plat. Ua ntej, tshem tawm cov qub plating los ntawm acid pickling los yog rov qab polarity txoj kev, ces re-plat raws li specifications los xyuas kom meej cov txheej txheem stability.
3. Localized defects (xws li pitting, pinholes): Localized sib tsoo thiab kov -plating tuaj yeem ua tau, kho tsuas yog thaj tsam cuam tshuam, txuag sijhawm thiab nqi.
✅ Nco tseg: Rau siab - daim ntawv thov precision xws li hydraulic system piston rods thiab automated equipment guide shafts, nws tsis pom zoo kom siv chrome ncaj qha - plated rods nrog ntau roughness, vim qhov no yuav ua rau lub foob hnav, ua rau cov dej xau lossis ua haujlwm tsis zoo.
Kev tiv thaiv:
1. Teeb tsa cov ntsiab lus tshuaj xyuas ntawm txhua theem ua ntej, lub sijhawm, thiab tom qab electroplating kom ua tiav tag nrho - txheej txheem tswj kom zoo;
2. Lim cov tshuaj plating tsawg kawg ib zaug ib lub lim tiam thiab tsis tu ncua kuaj CrO₃, sulfuric acid ratio, thiab trivalent chromium cov ntsiab lus;
3. Ua ntej cov neeg muab khoom lag luam nrog cov peev xwm kuaj hauv online thiab ua kom tiav cov txheej txheem tswj kom zoo kom ntseeg tau cov khoom sib xws.
