All shipped product suppliers will be inspected according to the product acceptance criteria at the time of shipment. When the goods arrive at the customer, the customer will also check the incoming materials according to the product standards. Many customers often encounter bumps when inspecting stainless steel bolts. As a stainless steel screw manufacturer, the following will tell you the inspection criteria for stainless steel screws.
Stainless steel bolt inspection is generally divided into: packaging inspection, visual inspection, dimensional inspection, performance inspection, and actual assembly inspection.
Packaging inspection: inspection method - visual inspection, inspection content: 1. The outer packaging box or packaging bag is not allowed to be damaged, deformed or damp. 2. The outer packaging label should have the supplier name, production date, OK label, inspector, specification model , material code, product color, quantity, etc. 3. The specified protective packaging should be used.
Appearance inspection: inspection method - visual inspection, inspection content: 1. The gloss of the screw (according to the surface treatment of the identification and sample screws: galvanizing, chrome plating, nickel plating, cadmium plating, plating multicolored, baking varnish, etc.) whether it meets the requirements 2. Screws and The gasket should not have any abnormal phenomena such as burrs, burrs, deformation, damage, good processing or poor molding. 3. Screws and washers should not be mixed (mixed with other screws or washers), short-loaded, missing sheets, gaskets and other anomalies. 4. Whether the screw head cap type, self-tapping and the wire meet the project requirements.
Caliper inspection: Inspection method: use caliper, inspection content: 1. Diameter: Whether it meets the required size of the project 2. Length: Whether it meets the requirements of the project size 3. Head cap: Whether it meets the required size of the project.
Performance test: inspection method - smoke box, 1. Put the screw into the smoke box for 24 hours, take it out and clean it, and do not rust within 24 hours after drying.
Actual assembly inspection: inspection method - visual inspection, inspection content: 1. Use the electric screwdriver to hit the screw on the corresponding casing, 2~5 times back and forth, stainless steel screws can not be deformed, slippery, broken (remark: electricity Appropriate adjustment of the appropriate strength) 2. Screw cap can not be deformed, slippery
The above is all the inspection methods for stainless steel bolts. If you want to better control the quality, I suggest that your company develop a standard for incoming inspection, register each time in time, and control the quality at the source. For all enterprises. Quality is the foundation of survival.