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Dongguan Zhihui Welding Technology Co., Ltd. was officially established in September 2021, relying on the platform resources and expert support of  CFSW center. Our mission is to promote the development and industrial application of friction stir welding technology, the company is committed to providing customers with intelligent equipment, advanced manufacturing, welding consumables, and technical services in the field of special welding supported one-stop service.
We prioritize long-term interests of our customers, focusing on optimizing products, technological innovation, personalized equipment customization, R&D design of welding consumables, and technical service support as our core areas and advantages. This approach aims to solve the bottleneck and challenges in special welding for you.
Adhering to a talent-oriented philosophy,we have a team of professional technical experts in the field of welding.We have provided comprehensive technical support and product solutions for numerous well-known enterprises at home and abroad in areas such as new energy vehicle battery trays, mobile phone accessories, busbar products,vacuum chambernd and businesses related to 5G and energy storage. We will continue to uphold this philosophy, delivering more professional and considerate services to become a trustworthy partner for our clients.
Zhihui Welding
Zhihui Welding
friction stir welding technology
Friction Stir Welding Machine

Technologies

Technical Advantages

Excellent welding quality

Strength is equivalent to that of the parent material: The strength of the welded joint can reach 85%-95% of the parent material, which is significantly better than traditional fusion welding.
Low defect rate: No molten welding defects such as pores and cracks, and high weld consistency.

High efficiency and energy saving

Energy consumption is reduced by 30%: solid-state welding does not require melting materials, and the energy consumption is only 70% of traditional welding.
Efficiency is increased by 50%: high degree of automation, single-pass welding speed can reach 1-5m/min.

Environmental protection and economy

Zero welding material consumption: no need to fill metal or shielding gas, reducing material costs.
Green manufacturing: no smoke, radiation and harmful gas emissions, in compliance with environmental regulations.
 

Wide material adaptability

Lightweight material first choice: suitable for difficult-to-weld materials such as aluminum alloy, magnesium alloy, titanium alloy.
Dissimilar material connection: can achieve high-quality welding of dissimilar metals such as aluminum/magnesium alloy and aluminum/copper alloy.

Core Technology Principle: Friction Stir Welding (FSW)

Principle overview:

Friction stir welding is a solid-state connection technology. A high-speed rotating stirring head (consisting of a stirring pin and a shoulder) is inserted into the joint of the workpiece to be welded. Friction heat is used to soften the material and produce plastic flow. Under the mechanical stirring action of the stirring head, material mixing and metallurgical bonding are achieved without melting the parent material and filling the welding material.

Technical core elements:
Friction heat generation and plasticization: The rotation speed and downward pressure of the stirring head are precisely controlled to ensure that the material softens without melting.
Material flow and mixing: The stirring pin drives the plastic material to flow along a specific path to form a dense weld.
Dynamic recrystallization: High-temperature plastic deformation promotes grain refinement and improves the mechanical properties of the weld.

R&D Results

Key technological breakthroughs
Key technological breakthroughs
High melting point material welding technology: overcome the stir friction welding process of materials such as titanium alloy and high-temperature alloy, and the weld strength reaches 92% of the parent material.
Composite heat source collaborative welding: develop laser-assisted stir friction welding technology, increase welding speed by 40%, and reduce heat input by 25%.
Intelligent process control system: integrate temperature, pressure, and torque real-time monitoring modules to achieve dynamic optimization of welding parameters.

Patents and certifications
Patent layout: 9 patents related to stir friction welding (including 3 invention patents) and 1 software copyright have been obtained.
Industry standard participation: Leading the formulation of the group standard "Technical Conditions for Stir Friction Welding Equipment" to promote industry standardization.

Benchmark project cases
New energy vehicle field: Customized battery tray welding solutions for a leading car company, the welding yield increased from 82% to 98%, and the unit cost decreased by 15%.
Aerospace field: Completed the welding of a certain type of aircraft skin wall panel, passed the airworthiness certification, and the fatigue life of the weld increased by 30%.

Innovation Ability Of The R&D Team

Expert team background

Technology support: The core members are from the Welding Technology Research institute of CFSW Center, with more than 20 years of experience in stir friction welding research and development.
Interdisciplinary collaboration: The team includes experts in multiple fields such as materials science, mechanical engineering, and automation control.
 
 

Technical breakthrough direction

Microstructure regulation: Through the design of the stirring head morphology and the optimization of welding parameters, the nano-level control of the weld grain size is achieved.
Digital twin technology: Develop a welding process simulation platform to predict weld performance and optimize process parameters, shortening the R&D cycle by 40%.
 

Industry-university-research cooperation

University joint laboratory: Co-build a stir friction welding research center with South China University of Technology  and Astronautics to promote the transformation of technological achievements.
International technical cooperation: Conduct technical exchanges with German FSW equipment manufacturers, introduce advanced design concepts and localize innovation.

Innovation Ability Of The R&D Team

Industry leadership: Core technical indicators (such as welding strength and efficiency) have reached the international advanced level, filling the gap in domestic high-end welding equipment.

Customer empowerment: Through process optimization and equipment customization, help customers reduce comprehensive costs by 20%-30% and improve product competitiveness.

Sustainable development: The technology is in line with the "dual carbon" goal and helps customers achieve green manufacturing transformation.

Video

The company is dedicated to providing customers with one-stop services in the field of special welding, ranging from intelligent equipment, advanced manufacturing, welding consumables to technical service support.

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Contact Us

Landline: +86-769-8278-1216
E-mail: brad.wang@alcu-fsw.com
              zoey.zhang@alcu-fsw.com
Phone: +86-156-3608-6589 / +86-135-4472-5331
Add: Buliding C, Jinshi Technology Park, Dalingshan Twon, Dongguan, Guangdong, China
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