在使用洛氏硬度計(jì)的過(guò)程中,如果顯示值不對(duì)，那么造成這種因素的原因有很多，現(xiàn)在我把一常見(jiàn)故障的分析和排除總結(jié)為以下九點(diǎn)：

　　1、在給洛氏硬度計(jì)加預(yù)負(fù)荷初，指針發(fā)現(xiàn)有抖顫動(dòng)的情況。主要原因是平鍵升降絲桿的壓槽配合有間隙。只要擰緊硬度計(jì)的平鍵緊固螺絲或更換即可。

　　2、主負(fù)荷加載完成后，硬度計(jì)指針有顫動(dòng)情況，造成這種情況的原因可分三種，一砝碼托盤(pán)上有油。二緩沖器相對(duì)工作臺(tái)不平衡。三硬度計(jì)機(jī)身不水平。找出問(wèn)題后就可針對(duì)具體情況選擇清理油污、調(diào)整緩沖器、校正硬度計(jì)工作臺(tái)。

　　3、進(jìn)行洛氏硬度計(jì)主負(fù)荷加載時(shí)，出現(xiàn)指針抖動(dòng)。原因是洛氏硬度計(jì)加荷手柄有松動(dòng)情況或者緩沖油不足。排決方法，擰緊松動(dòng)的頂絲，加油并排凈空氣。

　　4、主負(fù)荷加載后，硬度計(jì)指針出現(xiàn)較長(zhǎng)時(shí)間太轉(zhuǎn)動(dòng)。原因是砝碼吊桿太長(zhǎng)，調(diào)成短桿就解決了

　　5、硬度計(jì)主負(fù)荷加載后，指針還是靜止不動(dòng)。造成的原因是主負(fù)荷沒(méi)加上，或者緩沖器油針關(guān)閉了油孔。解決方法是把硬度計(jì)吊桿長(zhǎng)度調(diào)短，打開(kāi)緩沖器，調(diào)開(kāi)油針。

　　6、硬度計(jì)加主負(fù)荷時(shí)，指針轉(zhuǎn)動(dòng)迅速。主要原因是緩沖器的油針在開(kāi)口位置或者緩沖無(wú)油。排除方法，調(diào)節(jié)油針至合適位置，加油排凈空氣

　　7、硬度計(jì)加主負(fù)荷時(shí)，指針轉(zhuǎn)動(dòng)緩慢。主要原因有下面幾種：緩沖器的油針調(diào)節(jié)過(guò)小，緩沖器油太臟或粘度大，百分表測(cè)量桿有較大的摩擦，主軸系統(tǒng)有阻力。分析出原因后，針對(duì)進(jìn)行，油針調(diào)節(jié)，更換合適機(jī)油，消除摩擦，清洗主軸系統(tǒng)。

　　8、硬度計(jì)加主負(fù)荷時(shí)，指針時(shí)走時(shí)停，快慢不均勻。主要原因有兩種，一是洛氏硬度計(jì)緩沖器油缸有空氣。二是硬度計(jì)不水平致使機(jī)身與砝碼發(fā)生碰撞或接觸。解決時(shí)，一要排除油缸中的空氣，二要調(diào)整硬度計(jì)致水平。

　　9、硬度計(jì)硬度計(jì)主負(fù)荷卸除后指針還伴有跳動(dòng)現(xiàn)象。原因是砝碼吊桿與大杠桿鏈接處的球頭與秋窩進(jìn)入油污，清除即可。

In the process of using rockwell hardness tester, if the displayed value is wrong, there are many reasons for this factor. Now I summarize the analysis and elimination of a common fault into the following nine points:

1. At the beginning of preloading rockwell hardness tester, the pointer was found to shake. The main reason is the flat key lifting screw groove with clearance. Just tighten the flat key fastening screw of the hardness tester or replace it.

2. After the completion of the main load, the pointer of durometer will vibrate, which can be caused by three reasons. There is oil on a weight tray. The second buffer is unbalanced relative to the table. Three durometer body is not level. After finding out the problem, we can choose to clean up the oil pollution, adjust the buffer, and correct the durometer work table.

3. Pointer jitter occurs when the rockwell hardness tester is loaded under the main load. The reason is that the loading handle of rockwell hardness tester is loose or the buffer oil is insufficient. Discharge method: tighten loose top wire, fuel and clean air.

4. After the main load is loaded, the pointer of durometer turns too much for a long time. The reason is that the weight boom is too long, adjust to a short bar to solve the problem

5. After the main load of the durometer was loaded, the pointer remained stationary. The cause is that the main load is not added, or the buffer oil needle closed the oil hole. The solution is to shorten the length of the durometer boom, open the buffer, and adjust the oil needle.

6. When adding the main load to the durometer, the pointer rotates rapidly. The main reason is the buffer oil needle in the open position or buffer no oil. Elimination method: adjust oil needle to proper position, refueling and exhaust clean air

7. When adding the main load to the durometer, the pointer rotates slowly. The main reasons are as follows: the buffer oil needle adjustment is too small, the buffer oil is too dirty or viscosity is large, the dial gauge measuring rod has a large friction, the main shaft system has resistance. After analyzing the reasons, adjust the oil needle, change the appropriate oil, eliminate friction, and clean the spindle system.

8. When adding the main load of the hardness tester, the pointer stops and stops at different speeds. There are two main reasons, one is the rockwell hardness tester buffer cylinder air. Second, the durometer is not level resulting in collision or contact between the fuselage and weight. Solution, one to eliminate the air cylinder, two to adjust the level of hardness tester.

9, hardness tester hardness tester after the main load unloading pointer also has run-out phenomenon. The reason is that the ball head and autumn pit at the link between the weight derrick and the big lever enter the oil pollution and can be cleaned.