H62 tooj dag yog dab tsi thiab cov qauv twg npog nws
H62 yog Suav lub npe rau ib zaug -theem alpha tooj dag muaj 60.5-63.5% tooj liab nrog zinc raws li qhov sib npaug. Cov muaj pes tsawg leeg yog ze rau CuZn37 (tsim CW508L) hauv European system thiab C27200 hauv UNS system, yog li cov duab kos los ntawm ntau thaj chaw feem ntau piav txog tib yam khoom. Qib thiab tshuaj txwv yog kho los ntawm GB / T 5231, kos bar thiab pas nrig los ntawm GB / T 4423, extruded pas nrig los ntawm GB / T 13808 thiab kos raj los ntawm GB / T 1527; Cov ntawv xaj European tuaj yeem muab tso rau EN 12163, EN 12164, EN 12167 lossis EN 12168, thiab daim ntawv thiab sawb sib npaug rau ASTM B36 / B36M. Vim hais tias cov hlau yog ib theem, nws muaj qhov txias txias formability, uas yog vim li cas nws yog tus qauv xaiv rau sib sib zog nqus kos, khoov, spun thiab flanged qhov chaw, thiab yog vim li cas mos temper yog lub xeev tus me nyuam lub xeev tshwj tsis yog tias nws yog nruj me ntsis yuav tsum tau.
Composition thiab Mechanical Data
| Yam khoom | Tus nqi | Kev siv |
|---|---|---|
| Tooj | 60.5-63.5 % | GB/T 5231 |
| Zinc | seem | GB/T 5231 |
| Hlau, max / lead, max | 0.15 % / 0.08 % | GB/T 5231 |
| Tag nrho lwm yam impurities, max | 0.5 % | GB/T 5231 |
| Qhov ntom | 8.43g 3 | cov ntaub ntawv mills |
| Melting ntau | Txog 900-940 C | cov ntaub ntawv mills |
| Hluav taws xob conductivity | 27-28% IAB | cov ntaub ntawv mills |
| Thermal conductivity | Txog 120 W / (mK) | cov ntaub ntawv mills |
| Tensile zog, mos / ib nrab - nyuaj / nyuaj | 340-430 / 400-500 / 520-620 MPa | raug, temper dependent |
| Elongation, mos / tawv | 30-45 % / 3-10 % | raug, temper dependent |
| Hardness, mos / tawv | 60-90 HV / 120-160 HV | raug, temper dependent |
Vim hais tias cov no yog cov txiaj ntsig zoo tshaj li qhov kev lees paub minima, qhov kev txiav txim bushing yuav tsum tau hais txog cov cai temper, seem loj thiab cov neeg kho tshuab yuav tsum tau kuaj xyuas, kom lub zeb thiab lub tshuab khw ua haujlwm rau tib qhov kev cia siab.
H62 Brass Bushings: Tsim thiab Machining
H62 bushings yog tsim raws li lub tsho dawb, lub tes tsho flanged, thrust washers, cais bushes thiab grooved bushes nrog kauv, ncaj los yog daim duab - yim roj grooves. Cov khoom siv dav siv dav dav ntawm 5 hli mus rau 200 hli, phab ntsa thickness ntawm 1.5 hli mus rau 20 hli thiab ntev txog li 250 hli, machined los ntawm extruded los yog kos bar thiab raj. Tolerances ntawm IT7 rau IT8 nrog ib tug deg tiav ntawm Ra 0.8-1.6 micrometer haum rau feem ntau xovxwm- haum thiab khiav{17}} haum lub luag hauj lwm, thiab machined dav tolerances yuav tsum tau hais rau ISO 2768-1 chav kawm m tshwj tsis yog cov kos duab hais lwm yam. H62 tshuab dawb ntawm kev txiav ceev nrog cov cuab yeej ntse thiab lub teeb pub, thiab cov chips tawg kom huv si; lub ntsiab machining txaus ntshai yog tsim- nce ntug ntawm lub bore thiab ovality tom qab clamping, yog li ua tiav cov hlais ib txwm coj nrog qis clamping siab. Cov hlau tsis muaj lub sijhawm lubricating tus kheej, yog li lub bushing uas khiav qhuav yuav tsum nqa ib lub tshuab los yog sintered lubricant reservoir los yog teev nyob rau hauv ib tug tiag tiag self-lubricating khoom.
Kev txwv kev pab cuam, Corrosion thiab Common yuam kev
Peb qhov kev txwv tsim kom raug siv H62 bushings. Ua ntej, lub peev xwm thauj khoom: cov hlau yog cov qauv tooj dag, tsis yog cov kabmob bronze, yog li tsis tu ncua siab tshwj xeeb load nrog marginal lubrication hu rau ib tug leaded tin bronze los yog tin bronze xws li QSn7-0.2, thiab H62 yog qhov zoo tshaj plaws rau lub teeb thiab nruab nrab lub luag haujlwm. Thib ob, dezincification: tooj dag nrog tsawg dua li 63% tooj liab tuaj yeem poob zinc xaiv hauv cov tshuaj chloride-cov kabmob lossis cov dej tsis zoo, ua rau lub cev tsis muaj zog tooj liab daim txhuam cev, yog li H62 yuav tsum tsis txhob muab teev rau cov dej hiav txwv tsis tu ncua los yog ua kom txias txias - dej kev pab cuam nyob qhov twg aluminium bronick sponge. Thib peb, kev ntxhov siab corrosion cracking: txias- ua hauj lwm tooj dag raug rau ammonia los yog amine- bearing atmospheres tuaj yeem tawg raws cov ciam teb, uas yog tswj los ntawm kev ntxhov siab rau kev ntxhov siab nyob rau hauv 250-300 C ntau yam ua ntej machining zaum kawg. Lub ntsiab lus thib plaub yog galvanic corrosion: H62 nyob rau hauv kev sib cuag ncaj qha nrog hlau los yog txhuas nyob rau hauv ib qho chaw ntub dej yuav tsum tau muab cais los ntawm ib tug insulating washer los yog ib tug haum txheej.
Ordering, Inspection thiab Documentation
Ib qho kev txiav txim xa tawm rau H62 bushings yuav tsum qhia meej lub hauv paus tus qauv, qhov kub thiab txias, lub bore thiab sab nraud txoj kab uas hla tolerances, concentricity, groove geometry, nto tiav, tej plating los yog nto kho, thiab ntim. Kev tshuaj xyuas ib txwm suav nrog kev tshuaj ntsuam xyuas ntawm lub bar, hardness lossis tensile kuaj rau ASTM E8 thiab ASTM E18, kev kuaj xyuas qhov ntev ntawm lub qhov bore, sab nraud txoj kab uas hla thiab ntev, txoj hauj lwm zawv zawg thiab qhov tob, thiab kos duab rau laps, seams thiab machining marks. Daim ntawv pov thawj ntawm kev ua raws li EN 10204 3.1 nrog rau cov xov tooj cua kub traceability, nrog rau cov ntaub ntawv tshawb xyuas qhov ntev, yog cov ntaub ntawv ib txwm siv rau cov tshuab, tsheb, cov cuab yeej siv thiab cov neeg siv khoom valve, uas feem ntau yuav tsum tau ua ntej - tsab xov xwm tshuaj xyuas thiab cov ntaub ntawv muaj peev xwm rau kev mob siab rau qhov tseem ceeb.
Cov lus nug nquag
Q: Dab tsi yog European lossis UNS sib npaug ntawm H62 tooj dag?
A: H62 ntawm 60.5-63.5% tooj liab sib raug zoo rau CuZn37 nrog rau EN lub npe CW508L thiab rau C27200 hauv UNS system, yog li cov qhab nia sib npaug tuaj yeem raug xa mus los ntawm cov cheeb tsam.
Q: Dab tsi temper feem ntau muab rau H62 bushings?
A: Mos temper (O60) yog tus qauv rau kev tsim thiab rau machining stability, thaum ib nrab - tawv thiab tawv tempers yog muab thaum muaj zog dua los yog hnav tsis kam; lub temper yog teev raws li ib tug code ntawm qhov kev txiav txim.
Q: H62 puas tuaj yeem hloov cov kabmob bronze rau lub pob hnyav hnyav?
A: Nws yuav tsum tsis txhob siv rau siab tshwj xeeb load nrog marginal lubrication; leaded tin bronze C93200 los yog tin bronze QSn7-0.2 yog teev rau cov dej num no vim nws muab ib tug tsawg-kev sib txhuam, embeddable bearing qauv.
Q: Puas yog H62 haum rau kev siv dej hiav txwv?
A: Kev sib cuag dej hiav txwv tsis tu ncua yog zam vim muaj kev pheej hmoo dezincification qis dua li 63% tooj liab; naval tooj dag, txhuas bronze lossis cupronickel tau teev tseg.
Q: H62 bushings kuaj ua ntej xa khoom tuaj?
A: Dimensional soj ntsuam ntawm bore thiab sab nraud txoj kab uas hla, hardness los yog tensile xeem rau ASTM E18 thiab ASTM E8, tshuaj ntsuam xyuas ntawm bar tshav kub, thiab ib daim ntawv pov thawj ntawm conformity rau EN 10204 3.1, nrog thawj - tsab xov xwm tshuaj xyuas cov ntaub ntawv ntawm kev thov.
