1. What is a type test? lathe machine parts
Type test refers to the stereotyped test of the new product that is produced after the design is completed. It is an experiment to verify that the product meets all the requirements of the technical specifications. It is an essential link in the identification of new products. Only through type testing, this product can be formally put into production. However, for product certification, the redesigned new product is generally not certified. The type test performed for the purpose of certification is to use one or more representative samples to test the conformity assessment. The type test is based on product standards. The number of samples required for the test is determined by the inspection agency and the test samples are randomly selected from the final product of the manufacturer. The test is carried out in an accredited independent inspection agency. If the inspection agency lacks the necessary inspection equipment for individual special inspection items, it can be conducted under the supervision of an independent inspection agency or certification agency using the manufacturer’s inspection equipment. lathe machine parts
2. In what kind of situation do you need to do a type test?
a) Trial-type inspection of new products or old products to factory production;
b) After the formal production, if there are major changes in the structure, materials, and processes, the product performance may be affected;
c) During formal production, periodically or after a certain amount of production has been accumulated, an inspection shall be conducted periodically; lathe machine parts
d) When the product is shut down for a long period of time, resume production;
e) When there is a big difference between the factory inspection result and the upper type inspection;
f) When the State Quality Supervision Agency puts forward the requirements for type inspection
3. What is a routine inspection?
The routine inspection is 100% inspection of the key items of the product in the final stage of production. After the routine inspection, except for packaging and labeling, the processing is generally not performed. Its purpose is to eliminate products that may be in the process of processing the product. The accidental damage generated to ensure that the quality of the finished product meets the specified requirements. It is the factory inspection conducted under the provisions of national standards or industry standards, the transfer tests conducted on site, and the tests conducted periodically during the operation. Routine tests are also called preventive tests. lathe machine parts
4. What is the difference between a type test and a routine test?
Type tests are used to assess whether the design of a given product meets the relevant product standards and verifies that the product meets the design requirements. The routine inspection is to prevent the products from being inspected by the accidental factors caused by the unqualified products in the production process. It is the delivery test of each product completed in batches to determine whether it meets the products in the relevant standards. Delivery requirements.
In general, type testing is a destructive test. Compared with general routine tests, it is often used for life tests, pressure tests, etc. Therefore, products used for type testing are generally not available for sale. For example, a salt spray test is performed on steel rims of bicycles to examine the rust resistance of the surface coating. After a certain period of salt spray test, there will be different levels of rust on the surface, and such a steel ring cannot of course be attached to a bicycle.
There are many types of proportional test items for type test projects, and they are more rigorous and harsh. Users can also ask the manufacturer to add some type test items to the factory when new products are manufactured. (Generally, these items are written into technical agreement after prior consultation between Party A and B. in). lathe machine parts
In the product standards, attention should be paid to routine and type test items and test conditions. Specific product standards have provisions for type testing, and routine inspections are stipulated in China’s mandatory product certification rules or in some supplementary regulations.
Type tests can include the following assessments:
Performance requirements: operating limits, temperature rise, insulation performance, operating performance, vibration and shock, electromagnetic compatibility, noise, climate tests.
Routine tests can include the following assessments: lathe machine parts
Adjustment, setting and correction
The tightness of the equipment;
Resistance or impedance measurement. lathe machine parts