loading

What are the experiments on the joints welded by the spot welding machine?

There are many interesting experiments when checking the welding quality of spot welders and butt welders. When spot welding, seam welding and butt welding joints bear alternating loads, the alternating stress can be less than the yield strength of the material, and the crystal can work for a long time. It will also cause the joint to break, which is called fatigue failure. Some weldments bear alternating loads and are required to carry out fatigue tests. Spot welding and seam welding joints usually carry out repeated bending fatigue, tensile-compression fatigue and thermal fatigue tests.

In addition to the above-mentioned types of experiments for butt welded joints, twisting fatigue and rotational bending fatigue tests can also be carried out according to the application conditions of the weldment. Different fatigue test specimens have different shapes and sizes. During spot welding fatigue tests, they usually show The source of microcracks forms at the edge of the nugget or the heat-affected zone, and then expands to the surface of the base material, causing it to break in an instant.

Bending test and flattening test: This test can measure the plastic deformation level of the butt welded joint subjected to bending and flattening. The bending specimen is determined according to relevant standards. The experimental results can be based on the bending measured when the first crack occurs in the tensile part of the specimen. To evaluate the angle size, you can also bend the sample to a specified angle and check whether there are cracks to evaluate the level of plastic deformation in the joint area. The key during the experiment is how to identify the effectiveness of the first crack. Usually the crack length does not exceed the sample The corresponding bending angle is reasonable when it is 15% of the width.

What are the experiments on the joints welded by the spot welding machine?
 1

GET IN TOUCH WITH Us
recommended articles
Resource Thought Leadership News & Events
Heron Intelligent Monitoring Systems: The "Intelligent Guardians" of Industrial Production Quality
In the field of industrial production, product quality is the lifeblood of enterprises, and precise and efficient quality monitoring is a crucial link in ensuring product quality. A series of quality monitoring systems launched by Guangzhou Heron Intelligent Equipment Co., Ltd. integrate cutting - edge technology and industrial applications to safeguard industrial production quality, becoming the trusted "intelligent guardians" of numerous enterprises.
Heron Innovates Welding Technology of Contact Part, Leading the Intelligent Upgrade of Low-Voltage Electrical Industry
Heron's new moving contact welding line in the low-voltage electrical field is a game-changer. With patented tech like the silver tips feeding mechanism, it automates processes, cuts labor costs, boosts efficiency (4,500 pieces/11.5 hrs, 80% OEE), is eco-friendly, and drives industry upgrades.
Exploring the Efficient Welding of the Metal World: High-Strength Steel
This article focuses on the welding of high-strength steel. It expounds its characteristics like high strength and good toughness, and points out the technical key points such as pre-welding preparation and method selection. It highlights the application of resistance welding in it, including technical features, application scope, operation key points, difficulties and solutions, providing important guidance for related welding work.
Exploring the Efficient Welding of the Metal World:Hot-formed Steel
This paper explores hot-formed steel welding. It details its ultra-high strength, good accuracy yet poor weldability. Key points include material selection, parameter optimization. Main methods like resistance, laser, arc welding are introduced. Challenges like cracks and solutions are also covered.
Exploration of Efficient Welding in the Aluminum Alloy World
The article centers around aluminum alloy. It first states its characteristics like lightweight, high strength, corrosion resistance, etc. Then it details common welding methods such as resistance welding, TIG welding, and MIG/MAG welding, along with their features and application scopes. It further analyzes technical challenges in welding including deformation, porosity, oxide film, and joint softening, and proposes corresponding solutions. Overall, it emphasizes the significance of aluminum alloy welding in modern industry, the need to master proper welding techniques, and looks forward to the innovation and progress of aluminum alloy welding technology with the development of science and technology.
Exploring the Efficient Welding of the Metal World: Stainless Steel
The article mainly focuses on stainless steel. It first elaborates on the characteristics of stainless steel, including different types like austenitic, martensitic, ferritic and duplex stainless steel, and its properties such as corrosion resistance. Then it presents main welding methods like resistance welding, manual arc welding, gas-shielded welding, laser welding and others, along with their application scopes and operating points. It also analyzes technical difficulties in welding such as hot cracking, intergranular corrosion, welding deformation and porosity, and proposes corresponding solutions. Overall, it emphasizes the complexity and importance of stainless steel welding.
FSPR robotic system: The best way to solve the riveting problems of automotive roof component
This article introduces the FSPR Robotic Riveting Gun System as a solution to the riveting challenges faced by the automotive industry, particularly in the assembly of new car roof components made of multi-layered, differently shaped workpieces. The system utilizes a servo cylinder to deliver high-tonnage riveting force with precision, complemented by real-time monitoring and data analysis. Its successful application has solved technical challenges, enhanced the reliability of riveted connections, contributed to lightweighting automotive bodies, and driven technological progress in the automotive manufacturing industry.
Resistance Welding Defects And Preventive Measures
Resistance welding is widely used in automobile manufacturing, aerospace, electronic manufacturing and other industries due to its efficiency and energy-saving properties.
Resistance Welding Equipment Maintenance Guide: Cleaning and Maintenance Tips
Resistance welding machines, being the cornerstone of modern industry, exhibit a consistent and dependable performance that directly correlates with the seamless operation of the production line and the superior quality of the products.
High Power MFDC Welder Improves Busbar Welding Efficiency and Quality for Frame Breaker
In the low-voltage electrical industry, the welding quality of the conductive busbar is crucial to the overall performance and stability of the equipment.
no data

HERON, make welding simple

CONTACT US

Contact Person: Christina Liu
Tel: 86 20 87813325 / 86 20 87819588 / 86 20 87815075

Fax: 86 20 87813346

Email: info@heronwelder.com

Address: No.63 Xin Yi Road, Taiping Town, Conghua District, Guangzhou China

HERON, make joining simple
Copyright © 2025 HERON Intelligent Equipment Co., Ltd. - Heron-welder.com | Sitemap
Customer service
detect