在对轮对进行检修的过程中，发现轮对存在踏面磨损及单侧轮缘磨耗的问题。且

在对轮对进行检修的过程中，发现轮对存在踏面磨损及单侧轮缘磨耗的问题。且发现轮缘磨耗的车轮以2，3，5，8位居多。发现的轮缘磨耗形式有两种，即同一轮对单个车轮的轮缘磨耗；同一转向架的两条轮对不同时发生轮缘磨耗，发生轮缘磨耗的轮对其同侧的制动梁均有横向偏移的现象,使一侧闸瓦贴靠轮缘,另一侧闸瓦远离轮缘并且闸瓦贴靠的车轮轮缘发生磨耗,且磨耗表面并不是完全光亮的状态,说明轮缘磨耗到一定程度后轮缘磨耗停止。<br>2、摇枕弹簧定位圆脐磨耗<br>转K6摇枕弹簧定位圆脐在距摇枕本体约10 mm处存在磨耗现象,磨耗现象呈现出同一摇枕两端圆脐同一方向磨耗的特点。这是由于车体自身重量较轻,转K6型转向架在加装轴箱橡胶垫之后,未能增加摇枕弹簧的挠度,使得车辆受力结构发生改变,增大了空车在运行时摇枕相对于弹簧的活动范围，使得摇枕弹簧定位圆脐容易产生磨损。<br>3、转K6承载鞍裂纹<br>承载鞍裂纹部位多见于承载鞍的鞍面环带根部,这主要是由于转K6型转向架承载鞍顶部安装有轴箱橡胶垫,而且其橡胶垫顶面厚度比他类型的偏小,同时在生产过程中厂家制造工艺不过关,容易产生疲劳裂纹。<br>4、转K6转向架摇枕裂纹<br>摇枕裂纹主要集中在摇枕上平面工艺孔、下平面排水孔、八字面磨耗板的基准面、内八字面和各磨耗板等处。

During the maintenance of the wheel set, it is found that the wheel set has the problems of tread wear and unilateral rim wear. It is found that the wheels with rim wear are more than 2, 3, 5 and 8. There are two types of rim wear found, that is, the rim wear of a single wheel of the same wheel set; Two wheel sets of the same bogie have different rim wear at the same time. The brake beam on the same side of the wheel set with rim wear has a lateral offset, so that the brake shoe on one side is close to the rim, the brake shoe on the other side is far away from the rim, and the wheel rim close to the brake shoe is worn, and the wear surface is not completely bright, indicating that the rim wear stops after the rim wear reaches a certain degree.<br>2. Bolster spring positioning circle wear<br>The spring positioning round navel of zhuank6 bolster is worn about 10 mm away from the bolster body. The wear phenomenon shows the characteristics of wear in the same direction of the round navel at both ends of the same bolster. This is because the weight of the car body is relatively light. After installing the axle box rubber pad, zhuank6 bogie fails to increase the deflection of the bolster spring, which changes the force structure of the vehicle, increases the activity range of the bolster relative to the spring when the empty vehicle is running, and makes the positioning circle of the bolster spring easy to be worn.<br>3. Crack of zhuank6 bearing saddle<br>The cracks on the bearing saddle are mostly found at the root of the saddle surface ring belt of the bearing saddle, which is mainly due to the fact that the top of the bearing saddle of zhuank6 bogie is equipped with axle box rubber pad, and the thickness of the top surface of the rubber pad is smaller than that of other types. At the same time, the manufacturer's manufacturing process is not qualified in the production process, which is easy to produce fatigue cracks.<br>4. Crack on bolster of Zhuan K6 bogie<br>The cracks of the bolster are mainly concentrated in the upper plane process hole, lower plane drainage hole, the datum plane of the splayed wear plate, the inner splayed surface and each wear plate of the bolster.<br>

In the process of overhauling wheelsets, it was found that there were tread wear and one-side rim wear. It is found that the number of wheels with worn rim is 2, 3, 5 and 8. It is found that there are two forms of rim wear, namely, the rim wear of the same wheel to a single wheel; The two wheelsets of the same bogie do not wear at the same time, and the brake beams on the same side of the wheelsets with worn wheelsets are laterally offset, so that one brake shoe abuts against the wheel rim, while the other brake shoe is far away from the wheel rim and the wheel rim against which the brake shoe abuts is worn, and the worn surface is not completely bright, indicating that the wheel rim wear stops to a certain extent.2. Worn round navel of bolster spring positioning.There is wear phenomenon at about 10 mm away from the bolster body in the positioning round navel of the K6 bolster spring. The wear phenomenon shows that the round navel at both ends of the same bolster wears in the same direction. This is because the weight of the car body is light, and the deflection of the bolster spring can not be increased after the rubber pad of the axle box is installed on the Zhuan K6 bogie, which changes the stress structure of the car, increases the moving range of the bolster relative to the spring when the empty car is running, and makes the positioning round navel of the bolster spring easy to wear.3. Cracks in the load saddle of Zhuan K6.Cracks in the saddles are more common at the root of the saddle surface girdle of the saddles, which is mainly due to the fact that the top of the saddles of Zhuan K6 bogies is equipped with a rubber pad of axle box, and the thickness of the top surface of the rubber pad is smaller than that of other types. At the same time, in the production process, the manufacturer's manufacturing process is not up to standard and fatigue cracks are easy to occur.4. Cracks in the bolster of Zhuan K6 bogie.Cracks of bolster are mainly concentrated in the upper plane process hole, lower plane drain hole, datum plane of splayed wear plate, inner splayed face and various wear plates, etc.