Handle the quality inspection report of the woodworking winding saw blade QB T 20944. Testing standards.
1. Overview. Woodworking winding saw blade is one of the commonly used tools in the woodworking process, and its quality directly affects the accuracy and efficiency of woodworking. In order to ensure the quality of the woodworking winding saw blade, the corresponding testing standard is developed, namely QB T 20944。This standard stipulates the quality requirements, testing methods, identification and packaging requirements of woodworking winding saw blades, and is a specification that must be complied with in the production and sales of woodworking winding saw blades.
2. Testing items and requirements.
1.Appearance quality.
The quality of appearance is the first impression of the quality of the carpenter's winding saw blade. In accordance with QB T 20944. The requirements of the standard, the appearance quality of the woodworking winding saw blade should meet the following requirements:
1) The surface of the woodworking saw blade should be smooth and flat, without obvious scratches, dents, burrs and other defects;
2) The edge of the carpenter around the saw blade should be neat, without notch, damage, etc.;
3) The color of the woodworking around the saw blade should be uniform, and there should be no obvious color difference.
2.Dimensional accuracy inspection.
Dimensional accuracy is one of the important indicators to measure the quality of woodworking winding saw blades. In accordance with QB T 20944. The requirements of the standard, the dimensional accuracy of the woodworking around the saw blade should meet the following requirements:
1) Length accuracy: The length of the woodworking around the saw blade should be within the specified tolerance;
2) Width accuracy: The width of the woodworking around the saw blade should be within the specified tolerance;
3) Thickness accuracy: The thickness of the woodworking around the saw blade should be within the specified tolerance.
3.Mechanical properties.
Mechanical performance is one of the important indicators to measure the durability and use effect of woodworking winding saw blades. In accordance with QB T 20944. The requirements of the standard, the mechanical properties of the woodworking winding saw blade should meet the following requirements:
1) Tensile strength: The woodworking saw blade should have a certain tensile strength to ensure that it is not easy to break during use
2) Bending performance: The woodworking winding saw blade should have a certain bending performance to ensure that it is not easy to deform during use
3) Abrasion resistance: The woodworking winding saw blade should have a certain abrasion resistance to improve the service life.