Bolts are one of the common fasteners in our daily industrial manufacturing. The principle of the bolts is to use physical and mathematical principles of physical bevel circular rotation and friction, and gradually tighten the tools of the body of the device, so It is very important to check whether the bolts are safe. The following Xiaobian will introduce the following two methods commonly used for detecting bolts.
Bolt detection is divided into two types: manual and machine. Labor is the most primitive and most commonly used consistent detection method. In order to minimize the outflow of defective products, general production company personnel conduct inspections of the products that are packaged or delivered by visual means to exclude defective products (bad including dental injuries, mixed materials, rust, etc.).
Another way is automatic detection of the machine, mainly magnetic particle inspection.
Magnetic particle flaw detection is the use of the interaction between the leakage magnetic field at the bolt defect and the magnetic powder, the difference in magnetic permeability and the magnetic permeability of the drill tail wire (such as cracks, slags, and mixtures) after the magnetization The discontinuous magnetic field of these materials will undergo a catastrophic change, forming a leakage magnetic field at the part of the magnetic flux leaking at the surface of the workpiece, thereby attracting the magnetic powder to form a magnetic powder accumulation at the defect—a magnetic mark. Under the appropriate light conditions, the defect position is revealed. The shape and shape of these magnetic powders have been observed and interpreted to eliminate defective products.
Our company is specialized in the production of various national standard, non-standard, special-shaped hardware screws, nut fasteners screw processing production and wholesale manufacturers, according to the customer's drawings to produce a variety of self-tapping screws, stainless steel screws, non-standard screws, tapping screws , stainless steel rivets, expansion screws, mechanical screws, furniture screws, blind rivets, combination screws, screws, nuts and other hardware screw fasteners.