Customer's trouble: how to solve the problem of insufficient lubrication of elbow oil, which is difficult to clean
January 04, 2023
In the pipeline system of automobile exhaust pipe, elbow is the weakest part, and its forming quality directly affects the performance of the whole pipeline. The plastic bending forming of pipes is a complex process integrating material nonlinearity, geometric nonlinearity and boundary condition nonlinearity. After bending forming, it is easy to produce quality defects such as springback, outer wall thickness thinning or even cracking, inner wall thickness increasing or even buckling wrinkling, and cross section distortion. Therefore, in addition to selecting appropriate equipment and production process parameters, proper lubrication can help the tube to complete bending forming, improve product accuracy and extend die life.
Customers' troubles: The lubricating property of elbow oil is insufficient, and the precision of automobile exhaust pipe after bending is insufficient/the inside is wrinkled. Customers produce automobile exhaust pipes and other products, and provide product support for General Motors, Nissan, etc. Emulsified elbow oil will leave oil stain on site, which is difficult to clean, while some elbow oil has insufficient lubricating performance, affecting the quality of products.
Automobile exhaust pipe products
Production process and principle The commonly used equipment for pipe bending includes hydraulic pipe bender and CNC pipe bender. In the automotive industry, CNC pipe benders are generally used in industrial production, and the product accuracy and production efficiency will be higher.
Existing problems Common elbow oil can not meet the requirements of bending forming, resulting in insufficient product accuracy and easy internal wrinkling.
Inside wrinkling
Solutions Under the condition that the process parameters are set reasonably, the company replaced the water-soluble elbow lubricant products in the state of semi fluid gel to replace the oil-based, oil-water dispersed (emulsified) and other oil-bearing lubricants commonly used in the process of bending. Use effect The trial of the product is successful at one time, which can meet the lubrication requirements of plastic bending forming of pipes.
