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热心网友
Welcome to our company for investigation and I sincerely hope you will give us some precious suggestions.
Now, we would like to make a response to your connecting rods by air.
1. There are some drawbacks existed in blank of connecting rods in the model 2-ICR6125-1R、3-ICR5700PR、2-ICR6000R、2-ICR6385-1R and 3-101922R. And we discussed with the forging factory. They told us that it does not matter. Considering the expensive material fee, we didn’t blame them for these mistakes. But unfortunately, this view of point is absolutely wrong. We went to the forging factory again and had a communication with them about the existing quality problems. The forging factory turned their views and promised will strictly select the inferior connecting rod out next time. We are having an overall inspection for the stock connecting rods now. Once found the inferior ones, we declare them never being used. We take some measures as following for guarantee that we will get the superior connecting rods from now on. Firstly, the purchased blank needs to be overall inspected. The good ones are painted and then they are moved to the processing procere. Secondly, being strict at selecting the inferior procts in the processing procere, once found, leave them along and never put them into proction.
2. The drilling problems are found in the connecting rod model 3-101922R、2-350-6125-2100-LR and 2-454-6700-2200R. The first problem exists in model 3-101922R and 2-454-6700-2200R when drillers are drilling the locating hole and the steel hole. The reason might be that the drill did not polished on the right place so that makes the hole overlarge and when the body of rod and the top of rod are got together, the locating hole and steel lagging doesn’t play a role of positioning. The second problem exists in connecting rob model 2-350-6125-2100-LR. The bolt cannot whirl. The main cause is might be the abraded drill did not re-sharp in time and considering the resistance of drill, it shifted. Thus, it caused the deviation of different axiality and verticality oversized in body of rods, screwed holes and locating steel lagging. In order to avoid the problem of whirling problems and the problems mentioned above, our company together with the all technical, managerial personals and operators had a comprehensive communication and decided to take the following measures. First, strengthen the inspection to frock and guarantee the quality of procts by frocking precision. Second, strengthen the strict inspection and supervision to drilling processing. Third, restrict the revolving speed and speed rates of drilling machine to operators and guarantee the axiality and verticality for body of rod, the top of rod, screwed holes and locating hole of steel lagging. Fourth, drillers are asked to polish drills so that they could be sharp and cut smoothly. Finally, technical inspector on the spot and operators are required to regularly use the measure gauge to check the size and axiality of screwed hole and locating hole of steel lagging.
3. The main problems for the model 2-ICR5400-927R、2-ICR5700R and 2-454-6800-2200R are the over-tightness or uncleanness in screwed holes, which lead to the bolt getting stuck. Now we need to clean all the connecting rods inside and outside. And then use the bolt made in America to check each piece of bolt of the connecting rod, in order to make sure that every bolt works smoothly. In order to avoid the problems mentioned above, we are going to take these measures. First, strengthen the examination and repair for drilling frock and guarantee the required precision. Second, strengthen the strict inspection to drilling processing, supervise and restrict the speed and feed rates of the drill, and guarantee the axiality and verticality of rods, screwed holes on the top of rods and locating hole of steel lagging. Third, regularly use the measure gauge to check the size and axiality of screwed hole and the locating hole of steel lagging for the sake of preventing thread’s bottom hole to be tight because of its undersize. Fourth, strengthen the strict inspection to screw’s processing. Frequently use the plug thread gauge to check whether the abraded screw taps are replaced. Finally, use the bolt made in America to examine whether every screwed hole of connecting rod is cleaned or not.
4. The problem in model 2-454-6700-2200R and 102501-3 exists in chamfer oversize and having ripple in bolt base. The main cause for chamfer oversize might as following: First, the carelessness of operators made the machine tool unlimited. Second, overuse and retract slowness. The reasons for causing ripple in chamfer are as following: On one hand, didn’t deal with the hornwork in time. On the other hand, the high the revolving speed of the machine when deal with the chamfer. We are having an overall inspection for the stock connecting rods now. Once found the connecting rods existing in chamfer oversize and having ripple in bolt base, we will reprocess the bolt base. We will adopt the machine limited for the sake of the above problems never appeared. Now we are asking the particular person to take responsibility on the related jobs.
真的累啊,一个上午。希望能够帮到你,谢谢!
热心网友
不用翻译器,这翻译起来不要一天么..
热心网友
厄,太专业了