loading

Why does resistance welding not require non-destructive testing?

In fact, non-destructive testing is used to evaluate the quality of resistance welding. For example, through visual inspection, the position and spacing of solder joints, welding deformation and spatter of the product can be detected; the depth of indentation can also be detected with the help of measuring tools or magnifying glasses. , cracks and pores on the indentation surface; some internal defects can be detected through ultrasonic or radiographic inspection.

However, any testing method has its limitations. When a product has certain requirements for resistance welding joints, and non-destructive testing cannot confirm whether this requirement can be met, non-destructive testing cannot replace destructive testing. For example, our company has requirements for resistance welding nuts. To meet the breaking torque requirements, you need to use a torque wrench to unscrew the nut and measure whether the breaking torque meets the requirements. In addition, if there are requirements for the resistance welding joint such as nugget size, bending resistance, shear strength, etc., you can only use destructive testing Already.

In contrast, the weld quality of fusion welding can be guaranteed by non-destructive testing, while the joint strength of resistance welding is inherently low, and there are some very subtle defects that have a great impact on the strength of the joint, so non-destructive testing is not reliable. Welding quality can only be checked by destructive testing and ensured by monitoring the welding process.

But everyone knows that destructive testing destroys all products, which involves cost issues. For mass-produced products, the frequency of destructive testing is often stipulated, such as the first piece in each shift, once every 500 pieces, etc. For non- For standard products, and the single product value is high, destructive testing is often performed using test pieces that simulate the product. Compared with the impact of the outflow of defective products, the cost of these destructive testing is worth paying.

Why does resistance welding not require non-destructive testing?
 1

GET IN TOUCH WITH Us
recommended articles
Resource Thought Leadership Industry Knowledge
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.
Introduction of Resistance Welding Technology
In modern industrial manufacturing, welding technology is undoubtedly one of the significant methods for joining metal materials. Among these methods, resistance welding, as an efficient and environmentally friendly welding technique, has gained extensive usage in various sectors such as automotive parts manufacturing, aerospace, and electronic products, due to its distinctive process characteristics.
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