淮安SKF軸承安裝不當引起的兩個故障

Two Faults Caused by Improper Installation of SKF Bearing in Huaian

1。在安裝過程中，使用強而直接的錘擊軸承會對軸承造成很大的損壞。工程師對軸承的分析是造成軸承變形的主要原因。這在一些小型機床廠很常見，機床在安裝軸承時使用對口的軸承安裝工具，從而避免了這一點。

1. In the installation process, the use of strong and direct hammering bearing will cause great damage to the bearing. Engineer's analysis of bearings is the main cause of bearing debation. This is common in some small machine tool factories, machine tools in the installation of bearings using the corresponding bearing installation tools, thus avoiding this point.

2。軸承安裝不到位，軸承位置偏差或未安裝，導致軸承間隙過小。內外環不在同一旋轉中xin，導致不同的中xin。

2. Bearing installation is not in place, bearing b deviation or not installed, resulting in too small bearing bance. The inner and outer rings are not in the same rotation, which results in different middle xins.

建議：安裝后選擇合適或專ye的軸承安裝工具，并用專用儀器進行測試。

Suggestion: Select suitable or special Ye bearing installation tools after installation, and use special instruments for testing.

2。進口軸承潤滑bu良

2. Imported Bearing Lubrication Buliang

根據軸承工程師的調查，潤滑bu良是淮安SKF軸承過早損壞的主要原因之一。主要原因有：潤滑油或潤滑油加注不及時；潤滑油或潤滑油加注不到位；潤滑油或潤滑油選用不當；潤滑方法不正確等。

According to the investigation of bearing engineers, lubrication buliang is one of the main reasons for the premature damage of SKF bearings in Huaian. The main reasons are: not timely filling of lubricating oil or lubricating oil; not in place filling of lubricating oil or lubricating oil; improper selection of lubricating oil or lubricating oil; incorrect lubricating b, etc.

軸承工程師建議：選擇合適的潤滑油或潤滑劑，采用適當的潤滑和加注方法。

Bearing Engineer's Suggestion: Choose the appropriate lubricant or lubricant, adopt the appropriate lubrication and filling b.

在磨削過程中，砂輪的切削力、壓縮力和摩擦力都會對工件表面產生影響。特別是后兩者的作用，使工件表面形成一個強的定向塑性變形層和加工硬化層。這些淮安SKF軸承變質層不可避免地影響著表面殘余應力的變化。

In the grinding process, the cutting force, compression force and friction force of the grinding wheel will affect the workpiece surface. Especially the effect of the latter two makes the workpiece surface b a strong directional plastic debation layer and work hardening layer. These deteriorated layers of Huaian SKF bearings inevitably affect the change of surface residual stress.

（1）冷塑性變形層

(1) Cold plastic debation layer

在磨削過程中，每個磨粒相當于一個切削刃。然而，在許多情況下，切削刃前角為負值。除了切割，磨料顆粒使工件表面承受擠壓（犁削），在工件表面留下一個清晰的塑性變形層。隨著砂輪鈍度和磨削進給量的增加，變形層的變形程度增大。

In the grinding process, each abrasive grain is equivalent to a cutting edge. However, in many cases, the cutting edge rake angle is negative. In addition to cutting, abrasive particles make the workpiece surface bear extrusion (ploughing), leaving a b plastic debation layer on the workpiece surface. With the increase of grinding wheel bluntness and grinding feed, the debation degree of debation layer increases.

（2）熱塑性變形（或高溫變形）層

(2) Thermoplastic debation (or high temperature debation) layer

工作表面磨削熱所形成的瞬時溫度，使工件表面的彈性極限在一定程度上急劇下降，甚至在彈性消失的程度上。此時，由于磨削力，特別是壓縮力和摩擦力的作用，工作表面的自*由延伸受到基體金屬的限*制，表面被擠壓（犁削），造成表面塑性變形。當淮安SKF軸承磨削過程不變時，高溫塑性變形隨工件表面溫度的升高而增大。

The instantaneous temperature bed by the grinding heat of the working surface makes the elastic limit of the workpiece surface drop sharply to a certain extent, even in the degree of elasticity disappearance. At this time, due to the grinding force, especially the compression force and friction force, the self* extension of the working surface is limited by the matrix bl, and the surface is extruded (ploughed), resulting in surface plastic debation. When the grinding process of Huaian SKF bearings is unchanged, the high temperature plastic debation increases with the increase of the workpiece surface temperature.

（3）加工硬化層

(3) Work hardening layer

有時用顯微硬度和金相方法可以發現，由于加工變形，表面硬度增加。

Sometimes it can be found by microhardness and bllographic b that the surface hardness increases due to processing debation.

除研磨外，如果后續加工過程中鑄件和熱處理加熱引起的表面脫碳層沒有完全去除，軸承表面也會軟*化、變質和早期失效。

In addition to grinding, if the surface decarburization layer caused by casting and heat treatment heating is not compleby removed during subsequent processing, the bearing surface will also be softened, deteriorated and early failure.

文章來自：淮安SKF軸承 www.wh-skf.com

Article from: Huaian SKF Bearing www.wh-skf.com

文章來自：淮安INA軸承 www.ina-china.cn

Article from: Huaian INA Bearing www.ina-China.cn

文章來自：淮安NSK軸承 www.klbbearings.com

Article from: Huaian NSK Bearing www.klbbearings.com

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