Application of wire thread insert in motorcycle and automobile engine maintenance

The steel wire thread insert can improve the thread strength of the thread hole, and can effectively enhance the wear resistance and strength of the thread of the inner hole of the spark plug in automobile maintenance. The steel wire thread insert can significantly improve the thread strength of the aluminum alloy cylinder threaded connector.

1. The application of wire thread insertin automobile maintenance: the inner hole of the engine spark plug, due to high temperature, large vibration and shock and frequent disassembly, the inner thread hole is easy to wear and trip, resulting in premature scrap of the cylinder head. The use of ribbed sheath, not only improves the ability of thread to withstand temperature difference, but also improves the wear resistance, which can prevent thread hole wear and lead to slip teeth and premature scrap of parts.
2. The application of steel wire thread insertin the motorcycle cylinder: the motorcycle engine crankcase and cylinder body are aluminum alloy castings, with small structure and light weight, and the threaded connecting parts on the body should bear the larger working tension (such as the cylinder head bolt) and the strength of the thread hole is higher. The commonly used method is to use a relatively large threaded connection to achieve a large working tension. Such as cylinder head bolts, the use of M6 bolts can meet the strength requirements. However, in order to ensure that the thread hole on the crankcase can withstand a larger working tension, the connection thread with a larger diameter of M8 is used. This can solve the problem of thread hole strength, but it increases the processing cost of bolts. The test shows that the strength of the thread hole can be increased by more than 20% by using embedded ribbed sheath. Therefore, the rib sheath is used to form a thread hole on the body, which can meet the requirements of high strength thread hole connection.