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TIG Welding Cold Plate

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TIG Welding Cold Plate

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What is TIG Welding Cold Plate

The TIG welding cold plate (Tungsten Inert Gas-welded cold plate) is a premium thermal management component, crafted via TIG welding—an arc welding process using a non-consumable tungsten electrode and inert argon gas shield. Engineered to handle heat loads of 300–1000 W, it balances exceptional precision, structural integrity, and thermal efficiency, making it a top choice for industries requiring reliable cooling in critical systems.
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Core Material & Process Advantages

Commonly made with high-thermal-conductivity materials like copper (401 W/(m·K)) or aluminum alloys (6061/6063, 160–201 W/(m·K)), TIG welding creates clean, leak-tight joints without filler metals (or minimal low-alloy fillers). The argon gas shield prevents oxidation during welding, preserving the base material’s thermal conductivity and avoiding contamination. Unlike MIG or press welding, TIG welding delivers pinpoint heat control (10–300 A current range), minimizing heat-affected zones (HAZ) and reducing plate warping—critical for thin-gauge substrates (1–5 mm) and complex internal coolant channel designs (down to 3 mm width). This precision also supports bonding of dissimilar metals (e.g., copper-aluminum) for tailored thermal performance.

Key Performance Traits

TIG welding enables micro-scale joint control, ensuring consistent coolant channel dimensions for uniform heat distribution (temperature variation ≤4°C).
Superior Precision
Low HAZ and strong metallurgical bonds enhance resistance to thermal cycling (-50°C to 130°C) and vibration, extending service life to 8–12 years.
Structural Durability
Welded joints withstand pressures up to 15 bar, eliminating coolant leakage risks in sensitive electronics or industrial systems.
Exceptional Sealing
Compatible with high-performance metals (e.g., titanium for aerospace) and standard alloys, adapting to diverse application needs.
Material Versatility

Critical Industry Applications

    • Aerospace & Defense: Cools avionics, missile guidance systems, and satellite power modules—where weight savings and reliability are non-negotiable.​
    • Electronics: Manages heat in high-power semiconductors, 5G base station amplifiers, and data center server clusters.​
    • Energy: Used in solar inverters and hydrogen fuel cell stacks, leveraging corrosion-resistant welds for long-term outdoor operation.​
    • Medical Devices: Cools MRI scanners and laser surgical equipment, where clean, leak-proof design protects sterile environments.​
    As industries demand more compact, high-performance cooling solutions, the TIG welding cold plate stands out for its precision and reliability. Its ability to handle diverse materials and demanding conditions makes it indispensable for critical thermal management needs.
BY Thermal

Free Thermal Analysis

If you need to know more about how to apply thermal analysis to specific products (such as skived heat sinks, electronic stamping heat sinks), or want to obtain a customized thermal analysis guide for your industry, you can leave a message on our website, and our professional team will provide you with one-on-one support.

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SERVICES, CUSTOM LIQUID COLD PLATES

Soft Soldering Cold Plate

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Soft Soldering Cold Plate

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soft soldering cold plate

What is Diffusion Welding Cold Plate

BYLCP102401
The soft soldering cold plate is a widely used thermal management component, manufactured via soft soldering—a low-temperature joining process (180–450°C) that bonds metal plates with a molten solder alloy. Designed to dissipate moderate heat loads (50–300 W), it balances affordability, simplicity, and reliable cooling, making it a go-to solution for consumer electronics, industrial controls, and non-extreme environment applications.
Talk to the experts!

Core Material & Process Advantages

Typically constructed with aluminum (6061/6063, 201 W/(m·K)) or copper (401 W/(m·K)) substrates—paired with solders like Sn-Pb, Sn-Cu, or lead-free Sn-Ag-Cu alloys—the process relies on capillary action to draw solder into joint gaps. Unlike high-temperature welding (e.g., laser or diffusion), soft soldering minimizes heat damage to base materials, preserving their thermal conductivity and structural integrity. The low processing temperature also reduces energy consumption, cutting production costs by 30–40% compared to precision welding methods. This makes it ideal for high-volume manufacturing of standard or moderately customized cold plates.

Key Performance Traits

Low equipment investment and high production efficiency suit budget-conscious projects and mass production.
Cost-Effectiveness
Solder forms leak-tight joints (withstand up to 5 bar pressure) for coolant circulation, compatible with water-glycol or oil-based coolants.
Reliable Sealing
Minimal heat input avoids warping or weakening of thin-gauge plates (1–3 mm), critical for compact designs.
Gentle Processing
Adaptable to simple channel geometries (≥5 mm width) and various plate sizes (up to 800×600 mm) for diverse applications.
Ease of Customization

Critical Industry Applications

    • Aerospace & Defense: Cools avionics, satellite payloads, and missile guid
      • Consumer Electronics: Cools desktop CPUs, gaming consoles, and LED TV backlights—managing moderate heat in everyday devices.​
      • Industrial Controls: Thermal management for PLCs, power inverters, and motor drives in factory automation systems.​
      • Automotive Electronics: Cools infotainment systems and auxiliary power units (APUs) in traditional and hybrid vehicles.​
      • Telecommunications: Cools small-cell base stations and router components, where cost and reliability are prioritized over extreme performance.​
      As a budget-friendly thermal solution, the soft soldering cold plate excels in moderate heat load scenarios. Its low-temperature process, cost efficiency, and ease of scalability make it a practical choice for industries seeking reliable cooling without premium pricing—proving indispensable in everyday and industrial technology alike.
      ance systems—where weight savings and reliability are non-negotiable.
    • Electronics: Cools high-power semiconductors, 5G base station amplifiers, and data center server clusters (heat loads 500–2000 W).
    • Energy: Used in nuclear reactor components and hydrogen fuel cell stacks, withstanding high temperatures and pressure.
    • Medical Devices: Cools MRI scanners and laser surgical equipment, where leak-proof design protects sterile environments.
     
    As industries push for more powerful, compact devices, the diffusion welding cold plate delivers unmatched precision and reliability. Its solid-state bonding and material flexibility make it indispensable for extreme thermal management needs, justifying its premium positioning for critical applications.
BY Thermal

Free Thermal Analysis

If you need to know more about how to apply thermal analysis to specific products (such as skived heat sinks, electronic stamping heat sinks), or want to obtain a customized thermal analysis guide for your industry, you can leave a message on our website, and our professional team will provide you with one-on-one support.

Need more help?
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SERVICES, CUSTOM LIQUID COLD PLATES

Diffusion Welding Cold Plate

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Diffusion Welding Cold Plate

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What is Diffusion Welding Cold Plate

Server Liquid Cooling Solution Loop Direct to Chip Vacuum Brazing Water Cold Plate
The diffusion welding cold plate is a premium thermal management component, manufactured via diffusion welding—a solid-state joining process that fuses metal plates (no fillers or adhesives) under controlled heat and pressure. Ideal for high-heat, high-reliability applications, it leverages the process’s atomic diffusion bonding to create seamless, leak-tight internal coolant channels, making it a top choice for industries demanding uncompromised performance.
Talk to the experts!

Core Material & Process Advantages

Crafted from high-thermal-conductivity materials (copper: 401 W/(m·K), aluminum: 201 W/(m·K), or titanium for extreme environments), diffusion welding operates at 50–80% of the base metal’s melting point (600–1000°C for aluminum/copper) with 10–50 MPa pressure. The solid-state bonding eliminates thermal resistance gaps, ensuring maximum heat transfer efficiency. Unlike laser or press welding, it preserves material integrity, avoiding heat-affected zones (HAZ) that weaken structural strength. This process supports complex channel geometries (down to 2mm width) and thin-gauge plates (1–5mm), critical for compact, high-power devices.

Key Performance Traits

Diffusion-bonded joints are monolithic, withstanding pressures up to 20 bar—eliminating coolant leakage risks in sensitive applications.
Superior Sealing
Bonds dissimilar metals (e.g., copper-aluminum, titanium-steel) for tailored thermal/mechanical properties.
Material Versatility
Uniform heat distribution (temperature variation ≤3°C) outperforms traditional welded cold plates by 30–40%.
Exceptional Thermal Efficiency
Resists extreme thermal cycling (-60°C to 150°C) and corrosion, with a service life exceeding 10 years in harsh conditions.
Durability

Critical Industry Applications

    • Aerospace & Defense: Cools avionics, satellite payloads, and missile guidance systems—where weight savings and reliability are non-negotiable.
    • Electronics: Cools high-power semiconductors, 5G base station amplifiers, and data center server clusters (heat loads 500–2000 W).
    • Energy: Used in nuclear reactor components and hydrogen fuel cell stacks, withstanding high temperatures and pressure.
    • Medical Devices: Cools MRI scanners and laser surgical equipment, where leak-proof design protects sterile environments.
     
    As industries push for more powerful, compact devices, the diffusion welding cold plate delivers unmatched precision and reliability. Its solid-state bonding and material flexibility make it indispensable for extreme thermal management needs, justifying its premium positioning for critical applications.
BY Thermal

Free Thermal Analysis

If you need to know more about how to apply thermal analysis to specific products (such as skived heat sinks, electronic stamping heat sinks), or want to obtain a customized thermal analysis guide for your industry, you can leave a message on our website, and our professional team will provide you with one-on-one support.

Need more help?
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CUSTOM LIQUID COLD PLATES, SERVICES

Laser Welding Cold Plate

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Laser Welding Cold Plate

Home / SERVICES / Archive by category "CUSTOM LIQUID COLD PLATES"

A laser welding cold plate is an advanced heat dissipation component manufactured via laser welding technology—joining metal plates (typically aluminum, copper, or stainless steel) with high-energy laser beams to form enclosed channels for coolant circulation. Unlike traditional soldered or bolted cold plates, its laser-welded seams deliver superior precision and sealing, making it ideal for cooling high-power, heat-sensitive devices across industries. As electronic and industrial equipment grow more compact and powerful, laser welding cold plates have become a go-to solution for maintaining optimal operating temperatures.

Vacuum Brazing Cold Plate Heat Sink
Copper Aluminum laser cold plate

How Laser Welding Cold Plates Work

The core principle relies on two key steps: laser welding and coolant circulation. First, laser beams (with pinpoint accuracy, often 0.1–0.5mm focal diameter) fuse metal plates, creating leak-tight internal channels. This avoids the gaps or weak points of traditional methods that reduce heat transfer. Then, a coolant (e.g., water-glycol mixtures) flows through these channels, absorbing heat from the cold plate’s surface—heat is then dissipated via a heat exchanger or radiator, keeping the connected device (e.g., a CPU or battery cell) within safe temperature ranges (typically 25–60°C for electronics).

Key Advantages of Laser Welding Cold Plates

  • Exceptional Precision: Laser welding enables micro-scale seam control, fitting tight spaces (down to 5mm channel width) in miniaturized devices like server chips or EV battery modules.
  • Superior Heat Transfer: Welded seams eliminate thermal resistance from adhesives or gaskets, boosting heat dissipation efficiency by 20–30% compared to soldered cold plates.
  • Reliable Sealing: Laser-welded joints are leak-proof (tested to 10–15 bar pressure), preventing coolant leakage that risks device damage—critical for aerospace or medical applications.
  • Durability: Welded structures resist vibration and thermal cycling (from -40°C to 125°C), extending service life to 5–10 years in industrial environments.

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CUSTOM LIQUID COLD PLATES, SERVICES

Vacuum-Brazed Liquid Cold Plate

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Brazing process

Vacuum and Tunnel Brazing Process for Liquid Cold Plates

This page explains how vacuum brazing and tunnel brazing are used to manufacture liquid cold plates with machined channels, covers, fins, and manifolds. For product options, RFQ requirements, and drawing review, use the dedicated brazed cold plate quotation page.

View Brazed Cold Plate RFQ Page Send Drawings
Email: sales@bythermal.com Phone/WhatsApp: +86 180-2472-3991
Vacuum and tunnel brazing routes for liquid cold plate manufacturing
Vacuum brazing or tunnel brazing joins prepared metal parts into sealed liquid cooling structures. Final feasibility depends on material, channel geometry, brazing surfaces, and inspection requirements.
Process pageFocused on how brazed cold plates are manufactured.
Machined channelsFlow paths, covers, and manifolds are prepared before brazing.
Sealed structureBrazed joints create liquid cooling passages subject to inspection.
RFQ handoffProduct quotation is handled on the brazed cold plate page.

Process role

What brazing does in a cold plate

Vacuum brazing or tunnel brazing can join a base plate, cover plate, internal fins, and manifold features into one sealed liquid cooling assembly. The route is reviewed when a project needs compact internal flow paths or more heat transfer area than a simple tube-in-plate structure.

Channel design CNC machining Part cleaning Brazing route Inspection

Manufacturing route

Engineering checks before a brazed cold plate is released

Material and surface review

Material selection, brazing compatibility, plating, cleaning, and coolant compatibility should be confirmed before quotation.

Channel and fin geometry

Channel depth, wall thickness, fin area, pressure drop target, and port layout are reviewed against the drawing.

Sealing and inspection plan

Leak test, pressure check, cleanliness, flatness, and surface requirements should be defined before production.

When to use

Where brazed cold plates fit

Vacuum brazing and tunnel brazing are manufacturing routes among several custom liquid cold plate options. The final choice depends on heat load, channel complexity, material, cost target, and inspection needs.

  • Compact internal channels and manifolds
  • Higher heat transfer area with fins or pins
  • Sealed liquid cooling structures for power electronics
  • Application-specific mounting surfaces and ports
CNC machining workshop for brazed cold plate parts
CNC machining prepares channel plates, covers, port areas, and mounting surfaces before the brazing process.

Process comparison

Use the process page for route selection, then move to RFQ

This page explains how brazing routes work. The product page explains what brazed cold plates BY Thermal can quote from drawings.

Process pageUse for vacuum brazing and tunnel brazing process explanation, manufacturing sequence, and engineering considerations.
Product and RFQ pageBrazed cold plates is the main product and drawing quotation page.
Related optionsCompare embedded tube cold plates and FSW cold plates when the drawing may fit a different manufacturing route.

RFQ handoff

Send drawings to quote the actual cold plate

For quotation, BY Thermal needs the part drawing and operating requirements. The RFQ should be submitted through the brazed cold plate product page or contact page.

Go to Brazed Cold Plates Contact BY Thermal

FAQ

Brazed cold plate process questions

Is this page the product quotation page?

No. This page explains vacuum brazing and tunnel brazing process routes. The product and quotation page is Brazed Cold Plates.

What is a brazed liquid cold plate?

It is a liquid cooling plate made by joining prepared metal parts through a brazing process such as vacuum brazing or tunnel brazing to create sealed internal coolant passages.

When should engineers consider brazing?

Vacuum brazing or tunnel brazing is often reviewed when a drawing needs internal channels, compact heat transfer structures, manifolds, or sealed multi-part liquid cooling geometry.

Can BY Thermal review an existing drawing?

Yes. Send drawings, thermal load, coolant data, material preference, pressure requirements, and quantity for manufacturability review.

Need to quote a brazed cold plate?

Use the product RFQ page so the drawing, material, coolant, and inspection details are reviewed together.

Open Brazed Cold Plate RFQ Page
CUSTOM LIQUID COLD PLATES, SERVICES

FSW Friction Stir Welded Cold Plates

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Friction stir welding process

Friction Stir Welding Process for Liquid Cold Plates

This page explains how friction stir welding is used to manufacture aluminum liquid cold plates. For product options, RFQ requirements, and drawing review, use the dedicated FSW cold plate quotation page.

View FSW Cold Plate RFQ Page Send Drawings
Email: sales@bythermal.com Phone/WhatsApp: +86 180-2472-3991
Friction stir welding process for liquid cold plates
FSW joins an aluminum cover to a machined channel plate using solid-state welding. Final feasibility depends on alloy, geometry, weld path access, and inspection requirements.
Process pageFocused on how FSW cold plates are manufactured.
Solid-state joiningThe process joins aluminum parts without melting the base metal.
Machined channelsCoolant paths are usually cut before cover welding.
RFQ handoffProduct quotation is handled on the FSW cold plate page.

What this page is for

Keep the old URL as an FSW process resource

This page should not compete with the main FSW cold plate product page. Its job is to help engineers understand friction stir welding, when it is considered, and what manufacturing details affect feasibility.

Product inquiry path

When visitors are ready to quote a part, send them to the product landing page instead of duplicating the same sales content here.

Go to FSW Cold Plates

Process sequence

How friction stir welded cold plates are typically made

The exact route is drawing-dependent, but FSW liquid cold plate projects usually move through drawing review, machining, cover fit-up, welding, and inspection.

Drawing and alloy review CNC channel machining Cover plate fit-up FSW joining Finishing and inspection

Engineering fit

When engineers evaluate FSW for cold plates

Aluminum liquid cooling structures

FSW is commonly considered when the cold plate is based on aluminum parts and needs a welded cover over machined coolant channels.

Large or weight-sensitive plates

The process can be reviewed for EV, energy storage, server, laser, and industrial power assemblies where aluminum structure and package size matter.

Drawing-dependent weld access

Weld path access, cover thickness, channel geometry, port location, and keep-out zones should be checked before quotation.

Manufacturing details

What affects FSW feasibility

Friction stir welding is not selected by keyword alone. The practical manufacturing route depends on material, tool access, channel design, cover plate layout, and inspection requirements.

MaterialAluminum alloy, plate thickness, cover design, surface treatment, and corrosion requirements.
Channel geometryFlow path, channel depth, wall thickness, manifold area, port position, and pressure drop target.
Weld path accessTool travel path, start and exit zones, keep-out areas, fixturing, and part size constraints.
InspectionLeak test, pressure test, flatness, surface finish, cleanliness, and packaging requirements.

Process comparison

FSW compared with brazed and embedded tube cold plates

This comparison helps visitors choose the right next page without turning this process article into a duplicate product landing page.

FSW cold platesOften reviewed for aluminum plates with machined channels and welded covers. Continue to the FSW cold plate RFQ page for product quotation.
Brazed cold platesUseful when the design needs internal channel complexity, fins, manifolds, or compact sealed assemblies.
Embedded tube cold platesPractical when the part can use a formed tube path inside a plate and does not require complex internal channels.
Manufacturing choiceBY Thermal can review drawings to identify the practical route before quoting a cold plate.

Visual reference

FSW process and cold plate examples

Friction stir welding channel plate process
Friction stir welding can join a cover over machined coolant channels, subject to alloy and geometry review.
Friction stir welded aluminum liquid cold plate example
Finished cold plate structure, mounting holes, ports, and surface requirements should be confirmed from drawings.

RFQ handoff

What to send before asking for an FSW cold plate quote

Keep this page educational, then move buyers to the dedicated product page when they are ready to submit drawings.

Drawing files2D or 3D drawing, plate outline, thickness limits, port direction, mounting pattern, and contact areas.
Thermal dataHeat load, heat source map, target temperature, coolant type, flow target, and pressure drop limit.
Process detailsPreferred alloy, weld path constraints, inspection needs, finish requirements, and production quantity.
Next pageSubmit the FSW cold plate RFQ with drawings and requirements.

FAQ

Friction stir welding process questions

What is friction stir welding for cold plates?

It is a solid-state joining process used to weld a cover to a machined plate, often for aluminum liquid cold plate structures with internal coolant channels.

Is this page the FSW cold plate product page?

No. This page explains the process. The product and quotation page is FSW Cold Plates.

When should FSW be considered instead of brazing?

FSW may be considered for aluminum assemblies with machined channels and a welded cover. Brazing may be better for other materials, internal fins, compact channel structures, or different manufacturing constraints.

What determines whether a drawing is suitable for FSW?

Important factors include alloy, channel depth, cover design, weld path access, part size, port locations, fixturing, leak test requirements, and final inspection standards.

Ready to quote an FSW cold plate?

Use the product RFQ page when you have drawings, coolant data, and thermal requirements ready for review.

Open FSW Cold Plate RFQ Page
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