A tool manufacturer purchased a batch of 2Cr13 stainless steel for tool processing but found that some surface cracks appeared on the processed table knife during processing. This kind of crack cannot be observed from the raw material. After the surface is polished after shear forming, arc-shaped cracks appear on the surface of the knife.
The steel plant sent technicians to the manufacturer’s site for on-site inspection. After inspection, it was found that these cracks were longitudinally distributed, that is, along the stainless steel rolling direction; therefore, it was preliminarily determined to be a raw material quality problem. The steel plant technicians took samples and went back for analysis.
The report showed that the corrosiveness around these cracks was poor, there was a striped structure, and there was obvious inclusion and aggregation. The chemical composition analysis report also showed obvious composition segregation. For the above reasons, once the force is applied here, the material will be damaged, which is the cause of cracks.
According to the processing conditions of the table knives, the customer counted the number of table knives with defective quality in this batch of materials, treated them as scrap, and the steel plant paid compensation.
As a stainless steel supplier, you often encounter problems with raw materials. Although the supplier is not responsible, the trader is obliged to handle the profit and loss of customers and steel mills. Actively handling all kinds of quality objections is the basic means to maintain customers.