In the process of conflict with customers, such problems are often encountered: customized cold-formed forming machines are qualified in the test of the manufacturing plant, and the molding indicators in all aspects have reached the standard, but after returning to the factory, the produced profiles are not qualified. , Such as wrong shape size, unqualified R angle, deformation, etc. Such a problem occurs, in fact, in many cases, it is inconsistent with the raw materials purchased by the customer and the materials agreed in the contract when customizing the equipment, or the material is not uniform, or the thickness of the material is not equal. So what should customers pay attention to when purchasing raw materials? See below, we summarize based on our experience, for your reference, try to take detours as little as possible, and unnecessary waste in line.
First, the material thickness is incorrect.
When the thickness of the material customized by the customer is different from the thickness of the material agreed to be produced when customizing the equipment, some problems will occur in the produced profile, such as the wrong R angle and the wrong width and height of the profile, but this error is not obvious The requirements on the profile are not high and production can continue. However, customers have high requirements on the produced profiles, so they must purchase according to the raw materials agreed in the custom contract. For some less demanding, the thickness error can be appropriately relaxed to ± 0.5-1mm, preferably within ± 0.5mm, unless the customer can accept profiles with large errors.
Second, the material is wrong.
Various materials have different yield points and tensile forces. The raw materials of different materials will have a certain size difference. Therefore, the custom equipment must fully communicate with the equipment manufacturer, determine the raw materials, and then strictly implement it in the production process.
Third, the opening size is not uniform.
For some irresponsible or inadequate slitting machines for some material suppliers, the raw material opening size will not meet the requirements, the opening size will be incorrect, and the size of the product will definitely be unqualified. Therefore, when customers purchase raw materials, they should not purchase in large quantities in the early stage, and purchase a small amount in order to gradually understand the service and quality of the supplier, contact for a period of time, and feel reliable before purchasing in large quantities. Otherwise, such problems will cause great economic losses and directly affect production.
The above are the more common questions about the procurement of raw materials in the process of contacting equipment purchasers. These problems mainly occur to customers who have just entered this industry for the reference of first-time industry participants.