1基本步驟

(1)調(diào)整載物臺(tái)在導(dǎo)軌上的運(yùn)動(dòng)軌跡與壓頭至觀場(chǎng)中心的連線平行:

(2)將視場(chǎng)中二維尋找臣痕變?yōu)槠叫袑?dǎo)軌方向的一-維尋找壓痕。

2方法

(1)將載物臺(tái)推至最右端，僅在導(dǎo)軌上推動(dòng)裁物臺(tái)，連緩打出一串壓痕，且相鄰壓痕閫的距離即載物臺(tái)每次以左移量應(yīng)小于視場(chǎng)直徑，保證在一個(gè)視場(chǎng)內(nèi)可 出現(xiàn)兩個(gè)以上壓痕。壓痕之問的連線即為載物臺(tái)在導(dǎo)軌上的運(yùn)動(dòng)軌跡

(2)將載物臺(tái)推至左端，松開導(dǎo)軌緊固螺栓及載臺(tái)左右限位螺釘.

(3)前后移動(dòng)并稍轉(zhuǎn)動(dòng)導(dǎo)軌，觀察壓窟連線在視中的位置。由于壓痕成-長串.故原二維找點(diǎn)簡(jiǎn)化為在垂直于導(dǎo)軌運(yùn)動(dòng)方向的一維找線。將壓痕連線調(diào)至與視場(chǎng)水平直徑重臺(tái)時(shí)固定導(dǎo)軌。

(4)再打一壓痕，調(diào)節(jié)載物臺(tái)左右限位螺釘，至壓痕在視場(chǎng)中心，即平行于導(dǎo)軌方向- -維找點(diǎn)。

3說踢

(1)進(jìn)行以上調(diào)整時(shí).不可擰動(dòng)載物臺(tái)的水平，垂直櫥節(jié)螺桿。

(2)當(dāng)確信加載零點(diǎn)可靠時(shí)，可取最小載荷在極軟試洋上不卸載直接推動(dòng)載物臺(tái)劃出一-道壓痕線。再完成前述找線及找點(diǎn)步驟。

標(biāo)準(zhǔn)硬度塊使用的幾個(gè)問題

1標(biāo)準(zhǔn)硬度塊兩面都可以用嗎?

絕大多數(shù)不行，只有錘擊布氏硬度塊可用兩個(gè)面。在硬度塊的生產(chǎn)與標(biāo)定時(shí)主要是保證測(cè)量面的表面質(zhì)量和硬度均勻性，因此測(cè)量面與支承面的表面粗糙度- -般是不一樣的，在硬度塊的標(biāo)定只對(duì)測(cè)量面進(jìn)行，對(duì)支承面并沒有硬度值或硬度均勻性的要求。用未知的或不可靠的東西來校準(zhǔn)硬度計(jì)，您愿意嗎?

一般標(biāo)刻有硬度標(biāo)準(zhǔn)值的一面為測(cè)量面，對(duì)于錘擊布氏硬度塊(布氏條)有標(biāo)定壓痕的一-面也是測(cè)量2我不小心把反面打了硬度了!

以后不要在進(jìn)行這種“探索”了。

如果打得不多，用銼刀修平支承面上因錯(cuò)打硬度造成的表面凸起。

不進(jìn)行修磨直接用來支承，一方面使支承面與試臺(tái)面無法良好接觸(對(duì)于洛氏硬度試驗(yàn)可直接導(dǎo)致很大的誤差)影響測(cè)量精度，另一方面可能使試臺(tái)面損壞，此外如果在壓頭壓入過程中不幸發(fā)生了移位還可能損壞壓頭。3硬度塊過期了能用嗎?

一般不推薦使用過期的硬度塊，并不是說這個(gè)硬度塊不好了。正如我們不食用過期食品，并不一定是因?yàn)檫^期食品肯定是霉變了一樣。

但材料硬度有一定的時(shí)效性，即硬度會(huì)隨著時(shí)間發(fā)生變化。雖然多數(shù)正規(guī)企業(yè)生產(chǎn)的硬度塊都經(jīng)過人工和自然時(shí)效，硬度的變動(dòng)并不大，但按檢定周期重新檢定-一下會(huì)用起來更安心些。4硬度塊硬度值的問題在選用硬度塊時(shí)我們有一個(gè)原則:那就是盡量接近試件的硬度范圍。但商品化的標(biāo)準(zhǔn)硬度塊不可能囊括全部的硬度范圍，這樣-一方法沒法生產(chǎn)，另一方面工藝方法也不能系統(tǒng)化、標(biāo)準(zhǔn)化，所以硬度塊的生產(chǎn)廠家一般以檢定規(guī)程規(guī)定的檢定用硬度塊的范圍進(jìn)行生產(chǎn).

如果有特殊需要就得與硬度塊生產(chǎn)廠家聯(lián)系定做。當(dāng)然定制的硬度塊價(jià)格會(huì)高些，而且有的制造難度會(huì)很

商、制造周期也不短。.

通常在工業(yè)上使用硬度計(jì)，采用檢定范圍的硬度塊對(duì)硬度計(jì)校準(zhǔn)后，測(cè)量其他范圍硬度時(shí)不會(huì)有太大的問

題(或者說精度是充足的) . 5硬度塊銹了能用嗎?

如果銹蝕很董那就只好報(bào)廢了。如只是局部輕微的銹蝕也許還可以用。如果只是支承面有銹了，只要用砂紙簡(jiǎn)單地打磨去除就行了。如果測(cè)量面局部有銹，應(yīng)避免在這里測(cè)試，即使你把銹去除了那么原先的表面也已不存在了，硬度當(dāng)然可

能就不同了。

英斯特力儀器是一家集研發(fā)、生產(chǎn)及銷售于一體的 影像測(cè)量儀，拉力試驗(yàn)機(jī), 硬度計(jì) ,探傷儀, 粗糙度儀, 測(cè)厚儀, 金相設(shè)備廠家, 致力于為客戶提供更好的檢測(cè)儀器。

1 Basic Steps  

(1) Adjust the movement track of the loading platform on the guide rail to be parallel to the line between the pressure head and the center of the viewing field:  

(2) Change the two-dimensional search marks in the field of view into one - dimensional search indentation in the direction of parallel guide rail.  

2 methods  

(1) Push the load table to the right end, only push the cutting table on the guide rail, and slow a series of indentation, and the distance between adjacent indentation, namely, the load table each time to the left should be smaller than the diameter of the field of view, to ensure that there can be more than two indentation in a field of view.  The line of the indentation is the movement track of the platform on the guide rail  

(2) Push the loading platform to the left end, loosen the fastening bolts of the guide rail and the limit screws of the loading platform.  

(3) Move back and forth and rotate the guide rail slightly to observe the position of the grotto pressing line in sight.  As a result of the indentation into - long string.  Therefore, the original two-dimensional point finding is simplified to one-dimensional line finding perpendicular to the movement direction of the guide rail.  Fix the guide rail when the indentation line is adjusted to the horizontal diameter of the field of view.  

(4) Make an indentation again, adjust the left and right limit screw of the loading platform, until the indentation is in the center of the field of view, that is, parallel to the direction of the guide rail - - find a point.  

3 say play  

(1) When the above adjustments are made.  Do not screw the horizontal and vertical cabinet screw of the loading platform.  

(2) when it is sure that the loading zero is reliable, the minimum load can be taken in the very soft test without unloading directly push the loading platform to draw an indentation line.  Then complete the aforementioned line finding and point finding steps.  

Several problems in the use of standard hardness blocks  

Can standard hardness blocks be used on both sides?  

Most do not, only hammer brinell blocks can be used on two sides.  In the production and calibration of hardness blocks is mainly to ensure the surface quality and hardness uniformity of the measuring surface, so the surface roughness of the measuring surface and the supporting surface is not the same, in the calibration of hardness blocks only on the measuring surface, and there is no hardness value or hardness uniformity of the supporting surface requirements.  Would you be willing to calibrate a durometer with something unknown or unreliable?  

Generally marked with hardness standard value of the side for the measurement surface, for the hammer brinell hardness block (Brinell bar) with calibration indentation of the one - side is also measured 2 I accidentally hit the hardness on the back!  

Don't do this kind of "exploration" again.  

If not much, use a file to smooth the surface of the support surface caused by the wrong hardness.  

Without grinding directly used to support, on the one hand, the supporting surface and the test table can not be good contact (for Rockwell hardness test can directly lead to a great error) affect the measurement accuracy, on the other hand, the test table may be damaged, in addition, if the head in the process of pressing unfortunately displaced may damage the head.  3 hardness block expired can it be used?  

It is generally not recommended to use expired hardness blocks, not to say that this hardness block is not good.  Just as we don't eat expired food, it's not necessarily because it must be moldy.  

But the hardness of the material has a certain timeliness, that is, the hardness will change with time. Although most of the hardness blocks produced by regular enterprises have been artificial and natural aging, the change of hardness is not big, but according to the verification cycle re-verification - will use more secure.  4 hardness block hardness value problem in the selection of hardness block we have a principle: that is to try to close to the specimen hardness range.  But the commercial standard hardness blocks can not contain all the hardness range, such a method can not be produced, on the other hand, the process method can not be systematized, standardized, so the hardness block manufacturers generally in accordance with the verification of the scope of hardness blocks for production.  

If there is a special need to contact the hardness block manufacturer customized.  Of course, the price of customized hardness blocks will be higher, and some manufacturing difficulties will be very difficult  

Business, manufacturing cycle is not short.  .  

Durometers are usually used in industry, and after being calibrated against the durometer with the hardness block of the test range, there is no great difficulty in measuring the hardness of other ranges  

5. Can hardness blocks be rusted and used?  

If it rusts badly, it will have to be scrapped.  If only a slight local corrosion may also be used.  If there is rust only on the support surface, simply sand it away.  If there is rust on the measuring surface, you should avoid testing here, even if you remove the rust then the original surface is no longer there, hardness of course  

Can is different.