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Friction Stir Welding (FSW) liquid cold plate is an aluminum alloy heat dissipation component. It joins the base plate with flow channels and the cover plate into a whole via solid-state welding without material melting, featuring high reliability, leak resistance and vibration resistance.
Working Principle
Machine flow channel grooves on the base plate
Place the cover plate on top and clamp the assembly rigidly
A rotating stirring pin presses down and travels along the joint. Friction heat softens the metal into a plastic state
The plasticized metal is backfilled and forged behind the stirring pin, forming a dense weld seam
The entire process involves no material melting, welding wire, brazing filler metal or shielding gas
Schematic Diagram of Friction Stir Welding Principle
Core Advantages
Superior Strength: The weld strength reaches 90-95% of the base metal, much higher than that of brazed joints (approximately 50-70%)
Excellent Leak Tightness: The dense weld is free of pores. Its burst pressure exceeds 1.5 MPa, ensuring no leakage under long-term high pressure
Minimal Deformation: As a solid-state welding process with a narrow heat-affected zone, the flatness is controlled within 0.1 mm/m
Fatigue & Vibration Resistance: Refined metal grains enable stable performance under vibrating and thermal cycling conditions such as vehicle and energy storage applications
Lightweight Design: Wall thickness can be reduced (e.g., from 1.5 mm to 1.0 mm), cutting weight by 20-30%
Eco-friendly: No welding fume or brazing material contamination, with low energy consumption
Flexible Design: Compatible with complex flow channels including serpentine channels, microchannels and special-shaped channels
Common Materials
Material Type
Specific Alloys
Characteristics
Aluminum Alloy
6061/6063
Balanced strength and thermal conductivity
Aluminum Alloy
1050/1070
High thermal conductivity
Copper Alloy
Various
Higher thermal conductivity, applied to scenarios with ultra-high heat flux
Dissimilar Materials
Aluminum-copper, aluminum-stainless steel
Unique advantage of FSW technology
Typical Applications
Available upon request - contact our engineering team for specific application details and custom solutions.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
10000000-20000000
Employee Number:
50~100
Ecer Certification:
Verified Supplier
Dongguan Uchi Electronics Co., Ltd. is a professional manufacturer specializing in the R&D, production and sales of water cooling plates and liquid cooling plates, focusing on the thermal dissipation industry.
With sophisticated production technology, precision processing equipmen...
Dongguan Uchi Electronics Co., Ltd. is a professional manufacturer specializing in the R&D, production and sales of water cooling plates and liquid cooling plates, focusing on the thermal dissipation industry.
With sophisticated production technology, precision processing equipmen...