24小时服务热线:

维氏硬度、洛氏硬度、布氏硬度硬度对照表和换算方法

日期:2020-02-10 14:53点击数:

      根据试验资料硬度的不一样,分三种不一样的标度来示意:•HRA:是采用60kg载重和钻锥压入器邀的硬度,用来硬度极高的资料(如硬质合金等)。

      制件牌按抗张强度——慑服强度——延长率来示意,例如:牌:80-55-06代替抗张强度80000磅/英寸2(552MPa),慑服强度55000磅/英寸2(379MPa),延长率6.0%(2英寸或50mm)。

      它是五金资料的紧要性能指标之一。

      洛氏硬度试验是现今所使用的几种普通压痕硬度试验之一,三种表尺的初始压力均为98.07N(合10kgf),最后根据压痕深划算硬度值。

      依据实验资料硬度的不一样,分三种不一样的标度来示意:•HRA:是采用60kg载重和钻锥压入器邀的硬度,用来硬度极高的资料(如硬质合金等)。

      常见的测试法子囊括:-硬度数目字没部门。

      如其想懂得该作件的洛氏硬度值,平常的法子是,先测出布氏硬度值,然后根据换算表,查出相对应的洛氏硬度值,这种方式显然部分繁琐。

      根据试验资料硬度的不一样,分三种不一样的标度来示意:•HRA:是采用60kg载重和钻锥压入器邀的硬度,用来硬度极高的资料(如硬质合金等)。

      注:洛氏硬度中HRA、HRB、HRC等中的A、B、C为三种不一样的基准,称为表尺A、表尺B、表尺C。

      三、硬度換算公式1\.肖氏硬度(HS)=勃式硬度(BHN)/10+122.肖式硬度(HS)=洛式硬度(HRC)+153\.勃式硬度(BHN)=洛克式硬度(HV)4\.洛式硬度(HRC)=勃式硬度(BHN)/10-3硬度測定範圍:HS<100HB<500HRC<70HV<1300硬度換算表|---|---HV|HRC|HBS||HV|HRC|HBS||HV|HRC|HBS|940|68||560|53||300|29.8|284920|67.5||550|52.3|505|295|29.2|280900|67||540|51.7|496|290|28.5|275880|66.4||530|51.1|488|285|27.8|270860|65.9||520|50.5|480|280|27.1|265840|65.3||510|49.8|473|275|26.4|261820|64.7||500|49.1|465|270|25.6|256800|64||490|48.4|456|265|24.8|252780|63.3||480|47.7|448|260|24|247760|62.5||470|46.9|441|255|23.1|243740|61.8||460|46.1|433|250|22.2|238720|61||450|45.3|425|245|21.3|233700|60.1||440|44.5|415|240|20.3|228690|59.7||430|43.6|405|230|18|680|59.2||420|42.7|397|220|15.7|670|58.8||410|41.8|388|210|13.4|660|58.3||400|40.8|379|200|11|650|57.8||390|39.8|369|190|8.5|640|57.3||380|38.8|360|180|6|630|56.8||370|37.7|350|170|3|620|56.3||360|36.6|341|160|0|610|55.7||350|35.5|331|||600|55.2||340|34.4|322|||590|54.7||330|33.3|313|||580|54.1||320|32.2|303|||570|53.6||310|31|294||||||||||||||附录G钢的硬度值换算(续)表1钢的维氏硬度(HV)不如它硬度和强度的相近换算值a(续)维氏硬度|布氏硬度10-mm钢球3000-kg负载b|洛氏硬度b|表盘洛氏硬度表盘金刚钻圆锥压头|肖氏硬度|抗张强度(相近值)Mpa(1000psi)|维氏硬度---|---|---|---|---|---|---基准钢球|钨-硬质合金钢球|A.表尺60-kg负载金刚圆锥压头|表尺100-kg负载金刚圆锥压头|表尺100-kg负载金刚圆锥压头|表尺100-kg负载金刚圆锥压头|15-N表尺15-kg负载|30-N表尺30-kg负载|45-N表尺45-kg负载HV|HBS|HBW|HRA|HRB|HRC|HRD|HR15N|HR30N|HR45N|HS|σb|HV1|2|3|4|5|6|7|8|9|10|11|12|13370360350340330320310300295290285280275270265260255250245240230220210200190180170160150140130120110100959085|35034133132231330329428428027527026526125625224724323823322821920920019018117116215214313312411410595908681|35034133132231330329428428027527026526125625224724323823322821920920019018117116215214313312411410595908681|69.268.768.167.667.066.465.865.265.864.564.263.863.563.162.762.462.061.661.260.7---------――------|-(109.0)-(108.0)-(107.0)-(105.5)-(104.5)-(103.5)-(102.0)-(101.0)-99.5-98.196.795.093.491.589.587.185.081.778.775.071.266.762.356.252.048.041.0|37.736.635.534.433.332.331.029.829.228.527.827.126.425.624.824.023.122.221.320.3(18.0)(15.7)(13.4)(11.0)(8.5)(6.0)(3.0)(0.0)---------|53.652.851.951.150.249.448.447.547.146.546.045.344.944.343.743.142.241.741.140.3-----------------|79.278.678.077.476.876.275.674.974.674.273.873.473.072.672.171.671.170.670.169.6-----------------|57.456.455.454.453.652.351.350.249.749.048.447.847.246.445.745.044.243.442.541.7-----------------|40.439.137.836.535.233.932.531.130.429.528.727.927.126.225.224.323.222.221.119.9-----------------|-50-47-45-42-41-40-38-37-36-343332302928262524222120------|1170(170)1130(164)1095(159)1070(155)1035(150)1005(146)980(142)950(138)935(136)915(133)905(131)890(129)875(127)855(124)840(122)825(120)805(117)795(115)780(113)765(111)730(106)695(101)670(97)635(92)605(88)580(84)545(79)515(75)490(71)455(66)425(62)390(57)-----|370360350340330320310300295290285280275270265260255250245240230220210200190180170160150140130120110100959085a)在本表管用黑体字示意的值与按ASTM-E140表1的硬度变换值一致,由相对应的SAE-ASM-ASTM联合会列出的。

      3、洛式硬度是以压痕塑性变形深来规定硬度值指标。

      因硬度值是由起始塑性变形抗力和连续塑性变形抗力决议的,资料的强度越高,塑性变形抗力越高,硬度值也就越高。

      故此表尺B适用相对较软的资料,而表尺C适用较硬的资料。

      装置顺序为踢蹬承口多嘴——踢蹬胶圈——上胶圈一下管——装置机具设备——在多嘴表面和胶圈上刷润滑剂——顶推管使之插入承口——检讨。

      2\.洛氏硬度(HR)当HB>450或试样过小时,不许采用布氏硬度实验而改用洛氏硬度计量。

      依据布氏硬度和洛氏硬度换算表,可归结荚一个划算简略且易于记取的经历公式:HRC=(479-100D)/4,内中D为Φ10mm钢球压头在30KN压力下压在作件上的压痕直径测值。

      那样,可不可以根据布氏硬度计的压痕直径,径直划算出作件的洛氏硬度值呢?答案自然是确认的。

      DD型冲锋设备里氏硬度换算表(附表型冲锋设备里氏硬度换算表(附表BB))碳钢,低合金钢和铸钢(E≈210000N/mmHB〔1〕HB〔2〕HLDHRCHRBHVFFHSD30083HB〔1〕为轧制资料30284HB〔2〕为打铁资料304853068530886HLDHRCHRBHVFFHSD3108731287314883168931890HLDHRCHRBHVFFHSD3209032291324923269332894HLDHRCHRBHVFFHSD3309433295334963369733898HLDHRCHRBHVFFHSD34099342100344101346101348102HLDHRCHRBHVFFHSD35059.610335260.31043546110535661.710635862.4107HLDHRCHRBHVFFHSD36063.110836263.810936464.511036665.111136865.8112HLDHRCHRBHVFFHSD37066.41143726711537467.711637668.311737868.9118HLDHRCHRBHVFFHSD38069.511938270.112038470.612138671.212338871.8124HLDHRCHRBHVFFHSD39072.312539272.912639473.41273967412939874.5130HLDHRCHRBHVFFHSD4007513114240275.51331444047613414540676.513514740877136149HLDHRCHRBHVFFHSD41077.51381504127813915241478.414115341678.914215541879.3143156HLDHRCHRBHVFFHSD42079.814514015742280.214614115942480.714814316042681.114914416242881.5151145163HLDHRCHRBHVFFHSD43081.915214716543282.415414816643482.815515016843683.215715116943883.6158153171HLDHRCHRBHVFFHSD4408416015417244284.416115617444484.616315717544685.116415917644885.5166160178HLDHRCHRBHVFFHSD45085.916816217945286.318916418145486.61711651824568717316718445887.4174168185HLDHRCHRBHVFFHSD46087.717617018726.446288.117817218826.746488.51791731902746688.818117519127.346889.218317719327.6HLDHRCHRBHVFFHSD47089.518517819427.947289.918618019628.247490.318818219728.547690.619018419828.84789119218520029.1HLDHRCHRBHVFFHSD48091.319418720229.448291.719518920329.748492.11971912053048692.419919220630.348892.820119420830.6HLDHRCHRBHVFFHSD49093.120319620930.949293.520519821131.249493.920720021231.549694.320920221431.749894.621120421532HLDHRCHRBHVFFHSD5009521320521732.250295.421520721932.550495.821720922032.850696.221921122233.150896.622121322433.3HLDHRCHRBHVFFHSD51019.89722321522533.651220.297.422521722733.951420.697.922721922934.25162198.322922123034.451821.398.723122323234.7HLDHRCHRBHVFFHSD52021.799.2233225234355222299.623522723535.352422.423722923735.652622.823923123935.852823.124123424136.1HLDHRCHRBHVFFHSD53023.524423624236.453223.824623824436.753424.12482402463753624.525024224837.353824.825224425037.6HLDHRCHRBHVFFHSD54025.225524625237.954225.525724925438.154425.825925125638.454626.226125325838.754826.526425525939HLDHRCHRBHVFFHSD55026.826625826139.355227.126826026337055427.527026226539.955627.827326526840.255828.127526727040.5HLDHRCHRBHVFFHSD56028.427826927240.856228.828027227441.156429.128227427641.456629.428527627841.756829.728727928042HLDHRCHRBHVFFHSD5703029028128242.357230.329228328542.657430.629428628742.957630.929728828943.257831.229929129243.5HLDHRCHRBHVFFHSD58031.530229329443.858231.830429629644.158432.130729829944.458632.430930130144.758832.731230330445HLDH_张_阅通篇__,布氏、洛氏、维氏、肖氏硬度换算表硬度---布氏10/3000|洛氏|轻荷洛氏|维氏|肖氏压痕直径mm|HB|HRA|HRD|HRC|HR15N|HR30N|HR45N|HV|HS2.34|688|84.5|75.0|65.0|92.5|82.0|72.0|-|-2.37|670|83.5|74.0|64.0|92.0|81.0|71.0|-|-2.39|659|83.0|73.0|63.0|91.5|80.0|70.0|-|-2.42|643|82.5|72.5|62.0|91.0|79.0|69.0|-|-2.44|632|-|-|62.0|91.0|79.0|-|830|902.45|627|82.0|72.0|61.0|90.5|78.5|68.0|-|-2.46|621|82.0|-|61.0|-|78.5|-|800|892.47|616|81.5|71.0|60.0|90.0|77.5|66.5|-|-2.48|611|-|-|60.0|90.0|-|-|773|872.50|601|81.0|70.5|59.0|89.5|77.0|65.5|756|862.51|597|81.0|-|59.0|-|77.0|-|741|852.52|592|-|-|59.0|-|-|-|728|842.53|587|80.5|69.5|58.0|89.0|76.0|64.5|715|-2.54|582|80.0|-|58.0|89.0|76.0|-|704|832.56|573|80.0|69.0|57.0|88.5|75.0|63.5|693|822.57|569|80.0|-|57.0|-|75.0|-|682|812.58|564|79.5|-|56.5|-|-|-|672|-2.59|560|79.5|68.0|56.0|88.0|74.0|62.0|662|802.60|555|79.0|-|56.0|-|74.0|-|653|792.61|551|79.0|-|55.0|-|-|-|644|-2.62|547|79.0|67.0|55.0|87.5|73.5|61.0|635|782.64|538|-|-|55.0|-|-|-|626|772.65|534|73.5|66.5|54.0|87.0|72.5|60.0|618|762.66|530|78.0|-|54.0|87.0|-|-|610|-2.67|526|-|-|-|-|72.0|-|602|75|||||||||注:1.本表适用于碳素钢和合金钢,不快用来有色五金及渗碳钢;,温州合正生车业组件有限公司洛氏、维氏、肖氏硬度换算表HRC817977757371696867666564636261605958575655545352515049484746454443HV940900865832800772746720697674653633613595577560544528513498484471458446434423HRA92.591.590.589.588.587.58685.68584.583.983.482.882.381.881.280.780.179.67978.57877.476.876.375.975.274.774.173.673.172.572HS9795929188878583818078767574727169686766646362605857HRC4241403938373635343332313029282726252423222120-18-16-14-12-10-8-6-4-20HV412402392382372363354345336327318310302294286279272266260254248243238230222213204196188180173166160HRA71.570.970.469.969.468.968.467.967.466.866.365.865.364.764.363.863.362.862.46261.56160.5----------HS565554525150494847464443424141403838373635353433323129282726252424备考:HRC(洛氏),HV(维氏),HRA(洛氏),HS(肖氏)。

      铸球墨管一方面在离心机上,一方面将特定数的洋灰灰浆渐管内,然后再加快到高速,洋灰灰浆就与管内表盘尽管密实,形成一层厚薄匀称的内衬。

返回新闻列表

栏目分类