China Suppliers Factory DIN 929 Refined Hexagonal Welded Nuts - Grade 4.8 to 12.9, Various Materials Available
Functional Configuration
Hexagonal welded nuts serve as connections. Use a welding machine to connect the hexagonal welding nut to the mother body, and then use screws to fix the required object. Generally used in conjunction with spot welding machines, it has good welding performance and fast efficiency. This type of nut is widely used in industries such as automotive seats, sheet metal chassis and cabinets, molds, ships, railways, etc.
Product features
Hexagonal welded nuts solve the problem of ordinary nuts being unable to secure the parent body. There are three welding points and a circular protrusion on one side of the nut. The protrusion is used for positioning, and the solder joint is used for welding. Firstly, punch out a positioning hole on the mother body, position the protrusion of the nut on the hole, and then use a spot welding machine to weld the nut onto the mother body. The welding principle is to melt the three welding points of the nut at high temperature, causing the welding points to melt on the parent body, achieving the welding effect. This connection method belongs to non detachable connection.
Superiority
Projection welding has accurate positioning and consistent dimensions, with uniform strength at each point and reliable welding. Projection welding can ensure that the threads do not anneal without reducing accuracy, and the appearance of the welded parts is beautiful with high productivity. There is no harm to the human body caused by CO2 gas and coating smoke, which can improve the working environment.
Shortcoming
Due to incorrect selection of process parameters, the protruding welding nuts are not firmly welded, and semi-finished parts are prone to falling off during transportation or transportation.
Application and Development History
With the continuous improvement of the quality of welded nuts and the needs of the industry, various types of welded nuts have emerged. The application of welded nuts is becoming increasingly widespread, especially in the automotive industry, where they are applied in important parts such as chassis beams, transmissions, and seat belts. Hexagonal welded nuts are convenient to use, highly efficient, and have a beautiful welding appearance. More and more products are using hexagonal welded nuts.
Frequently Asked Questions
What are hexagonal welded nuts used for?
Hexagonal welded nuts serve as strong connections. They are joined to a parent metal body using a welding machine, allowing screws to securely fix the required objects. They are widely used in automotive seats, sheet metal chassis, molds, ships, and railways.
How do hexagonal welded nuts connect to the parent body?
The nut features a circular protrusion for positioning and three welding points. A positioning hole is punched in the parent body to align the protrusion. Then, a spot welding machine melts the three welding points at high temperatures, fusing the nut onto the parent body in a non-detachable connection.
What are the benefits of projection welding for these nuts?
Projection welding ensures accurate positioning, consistent dimensions, uniform strength, and reliable results. It prevents threads from annealing, maintains accuracy, yields high productivity, and improves the work environment by avoiding harmful CO2 gas and coating smoke.
What is the main shortcoming of using welded nuts?
If process parameters are incorrectly selected, the protruding welding nuts may not weld firmly. This can cause semi-finished parts to fall off during transport or handling.
Where are these nuts used in the automotive industry?
In the automotive industry, hexagonal welded nuts are widely applied in critical parts such as chassis beams, transmissions, and seat belts because of their high efficiency and clean appearance.