What major quality defects will occur in the production of auto parts?
- Major quality defects-1: necking, cracking
This defect mostly occurs in the drawing process, and a small amount occurs in the flanging or shaping process. The causes of drawing cracking are: too much blank holding force of the die or poor coordination of the drawing ribs, causing the material to flow too slowly; too large or too small the R angle of the die, which hinders the flow of the material; cracking due to the material is due to The moldability of the material is not good, that is, the tensile strength of the material is insufficient. If it is plastic cracking, it is due to the poor cooperation of the concave and convex molds.
- Major quality defects-2: porous, few pores, pore deformation
The cause of this defect: the punch is installed more or less, the punch breaks; the punching material and the gap between the punch are not good, there is a phenomenon of banding, and the reason for the hole deformation is due to the increase or deviation of the convex and concave die gap.
- Major quality defects-3: indentation
This defect can occur in any process, and most of the causes are caused by foreign objects sticking to the mold surface. Under normal circumstances, it is mainly caused by zinc powder falling off after pulling, iron scraps generated during trimming, and slugging of the scrap, which causes the scrap to fall into the mold surface after secondary trimming. According to different types of indentation, the generated station can be judged during processing. From the past statistics, more than 90% of the indentation occurred in the trimming, flanging and shaping processes.
- Major quality defects-4: scratches
This defect is mainly caused by several reasons: one is the scratches of the material itself; the second is the scratches caused by the mutual interference in the process of parts transportation; the third is the collision of the parts during the packing process; the fourth is the collision of the parts during the transfer produce.
- Major quality defect-5: dezincification
There are two main reasons for this defect: one is that the gap between the concave and convex mold is too small; the other is that the local gap is too small due to the uneven mold surface. Mainly occurs in drawing or flanging and shaping processes.
- Major quality defects-6: lack of materials
This defect is caused by drawing I, and the causes are: the position of the material in the tool is too small; too small a blank holder force causes the material to flow too fast to form a lack of material.
How to solve the above defects of stamping parts quality by surface defect inspection machine?
Surface defect inspection machine refers to the targeted defect detection of the surface of the detected object based on the machine vision inspection system. Generally detect more defects such as color difference, dents, defects, spots, scratches and so on.
Shenzhen Sipotek Technology Co., Ltd. surface defect inspection machine is based on the computer camera imitating human eye vision, using a special vibrating disk automatic feeding mechanism to collect, calculate, judge, and sort specific physical images, not only for detecting dimensions (including length and height , Diameter, etc.), also suitable for product mixing, deformation, burrs, scratches, lack of material, stains, etc.
Surface defect inspection machine has been used in industries such as screws, rubber rings, mobile phone accessories, plastics, auto parts, metal stampings, etc., and has achieved very good detection results. According to the use of the product, the specific data shows that the highest detection speed can reach 1200 Support per minute, the detection accuracy can be up to 10u, which is equivalent to replacing 6-8 quality inspection workers.
If you need more information about the SIPOTEK surface defect inspection machine, please contact us for further discussion or visit our website:www.topvision.net
Shenzhen Sipotek Technology Co., Ltd. has been based on the surface defect inspection machine for 17 years, providing professional and customized vision inspection solutions for different industries, the company has always adhered to the production philosophy of quality and create greater value for customers.
Contact Person: James Yuan
Company: Shenzhen Sipotek Technology Co., Ltd
Email: [email protected]
Website: www.sipotek.net www.topvision.net