A motor repair company in Southeast Asia was facing a challenge that many industrial maintenance workshops

know all too well.

Their business focused on repairing large electric motors, generators, and power distribution equipment. During

maintenance, damaged copper busbars, conductors, terminals, and electrical connectors often required rebuilding or

repair welding.

Although they had tried several welding materials, the results were not always satisfactory. Some welds showed

poor conductivity, while others developed porosity or cracks after service. In some cases, overheating occurred at the

repaired area, leading to additional downtime and expensive rework.

The company needed a more reliable solution.

A Simple Change That Made a Big Difference

After receiving a recommendation from an experienced welding engineer, the company decided to test ERCu

Copper Welding Wire.

The first application involved repairing a heavily worn copper busbar in an industrial power distribution system.

The welding team immediately noticed the difference:

• Stable arc performance

• Smooth wire feeding

• Excellent fusion with the copper base metal

• Minimal spatter

• Clean and attractive weld appearance

Most importantly, conductivity testing after welding showed excellent results.

The repaired busbar was returned to service and continued operating under high electrical loads without overheating

or failure.

Expanding the Use of ERCu

Encouraged by the successful repair, the company began using ERCu Copper Welding Wire in a wider range of

projects, including:

• Copper busbar repair and fabrication

• Electric motor winding restoration

• Transformer maintenance

• Generator component rebuilding

• Copper connector manufacturing

• Electrical terminal welding

• Industrial equipment maintenance

According to the workshop manager:

"The biggest benefit was confidence. We knew the repaired components would perform reliably in service. That

reduced callbacks, rework, and customer complaints."

Why ERCu Copper Welding Wire Works

ERCu is a high-purity copper welding wire specifically designed for welding and rebuilding copper and certain

copper alloys.

Key benefits include:

• Excellent electrical conductivity

• High thermal conductivity

• Good corrosion resistance

• Strong metallurgical bonding

• Stable welding characteristics

• Reliable long-term service performance

The XINXIN Welding Advantage

At Tongling Xinxin Welding Materials Co., Ltd., we understand that industrial repairs require more than simply

joining metal—they require long-term reliability.

Our XINXIN ERCu Copper Welding Wire is manufactured under strict quality control standards to ensure:

• Consistent chemical composition

• Stable welding performance

• Excellent conductivity

• Reliable mechanical properties

• OEM and private-label support

XINXIN WELDING

Professional Brazing & Welding Materials Manufacturer

Website: https://www.superlionwelding.com/

Email: jasmine@xxhccn.com

WhatsApp: +86 13705623213

In silver brazing, achieving a strong joint depends on more than selecting the right filler metal. The performance of

the brazing flux plays an equally critical role in determining joint quality, production efficiency, and operator safety.

One of the most common challenges manufacturers face is flux spatter during heating. Although often overlooked,

unstable flux can lead to contaminated joints, excessive residue, wasted filler metal, increased rework, and unnecessary

production costs.

At XINXIN WELDING, we developed QJ102 Silver Brazing Flux to solve this problem at its source—delivering a

cleaner, more stable brazing process that helps manufacturers improve product quality while reducing production costs.

The Hidden Cost of Flux Spatter

Flux spatter is more than just an inconvenience.

When flux boils or splashes during brazing, it can leave residue on the workpiece, interfere with filler metal flow, and

create defects that require additional cleaning or repair. Over time, these seemingly minor issues add up to significant losses

in productivity.

Common problems caused by unstable flux include:

• Contaminated brazed joints

• Excessive slag and residue

• Poor filler metal wetting

• Higher filler metal consumption

• Increased rework and rejection rates

• Longer cleaning time

• Reduced production efficiency

• Greater exposure to hot particles and fumes

What Causes Flux Spatter During Silver Brazing?

Low-quality fluxes often contain inconsistent particle sizes, excessive moisture, or unstable chemical formulations.

As temperature rises, trapped moisture and volatile components expand rapidly, causing violent bubbling, popping, and

spattering.

Selecting a thermally stable, high-quality brazing flux is one of the most effective ways to prevent these issues.

How QJ102 Silver Brazing Flux Solves the Problem

QJ102 Silver Brazing Flux from XINXIN WELDING has been engineered to provide consistent performance throughout

the entire brazing cycle. Its carefully balanced formulation minimizes sudden evaporation while maintaining excellent

chemical activity across a wide operating temperature range.

1. Low Volatility for Minimal Flux Spatter

Suitable for brazing temperatures between 600°C and 850°C, QJ102 provides minimal bubbling, virtually no flux spatter,

no slag explosion, cleaner workpiece surfaces, and more consistent heating during torch, induction, and furnace brazing.

2. High Chemical Activity for Superior Wetting

QJ102 rapidly removes oxides from copper, copper alloys, stainless steel, carbon steel, and nickel alloys, allowing silver

brazing alloys to spread smoothly and produce dense, reliable joints with excellent capillary action.

3. Easy Residue Removal

After cooling, the residue becomes brittle and can be removed easily with warm water, reducing cleaning time, labor

costs, grinding, polishing, and the risk of trapped flux residue.

4. Designed for a Wide Range of Applications

Suitable for HVAC, refrigeration, heat exchangers, copper tube assemblies, automotive components, electrical equipment,

plumbing fittings, hardware manufacturing, precision instruments, and industrial machinery. Compatible with most silver brazing

filler metals.

Why Manufacturers Choose QJ102

Compared with conventional products, QJ102 offers minimal flux spatter, excellent thermal stability, strong oxide removal

capability, superior wetting performance, easy residue removal, lower rejection rates, improved workplace safety, and consistent

batch-to-batch quality.

Why Partner with XINXIN WELDING?

XINXIN WELDING provides reliable brazing solutions for customers worldwide. Our product portfolio includes Silver

Brazing Flux, Copper Brazing Flux, Silver Brazing Alloys, Brass Brazing Rods, Copper-Phosphorus Brazing Alloys, Aluminum

Brazing Materials, and customized brazing solutions.

Conclusion

Flux spatter is not an unavoidable part of silver brazing—it is often a sign that the flux itself can be improved.

By choosing QJ102 Silver Brazing Flux, manufacturers can significantly reduce spatter, improve filler metal flow, simplify

post-brazing cleaning, and achieve cleaner, stronger joints with greater production efficiency.

Cleaner Brazing. Stronger Joints. Greater Efficiency.

XINXIN WELDING — Your Trusted Partner for Professional Brazing Materials.

Technical Overview

Silicon bronze brazing filler rods (AWS A5.7 ERCuSi-A) are copper-based alloys containing approximately

2.8 – 4.0% silicon. They are widely used in brazing and braze-welding applications where controlled heat input

and joint integrity are required.

Key Advantages

- Lower working temperature (965-1035°C) reduces distortion and preserves base metal properties

- Excellent wetting and flow characteristics for uniform joints

- Moderate tensile strength (approx. 350MPa)

- Good corrosion resistance in atmospheric environments

Applications

- Automotive body repair

- HVAC brackets and components

- Sheet metal fabrication

- Marine and decorative metalwork

Process Considerations

- Shielding gas: Argon recommended (TIG/MIG)

- Clean surfaces required before brazing

- Prefer lap joint design

- Avoid overheating to maintain flow performance

Why XINXIN WELDING

- Controlled chemical composition

- Tight dimensional tolerance

- Stable melting behavior

- Reliable batch consistency

Contact

Tongling Xinxin Welding Materials Co., Ltd.

Website: https://www.superlionwelding.com/

Email: jasmine@xxhccn.com

WhatsApp: +86 13705623213

In copper pipe brazing, one poor joint can mean refrigerant leakage, costly repairs, and

customer complaints.

 That’s why professional technicians and HVAC manufacturers choose XINXIN WELDING — a

trusted supplier of high-performance brazing materials designed for stable quality and reliable results.

 Our BCuP-2 Phos-Copper Brazing Rods are developed for fast-flowing, clean, and strong copper

brazing applications.

Whether you are producing air conditioners, refrigeration systems, heat exchangers, or plumbing

systems, XINXIN WELDING helps you achieve:

 • Cleaner brazing joints

 • Better capillary action

 • Faster operation

 • Lower production cost

 • Long-lasting performance

Why Customers Prefer XINXIN WELDING

 1.Excellent Flowability

The rod melts smoothly and spreads quickly into the joint, helping operators reduce brazing time

and improve efficiency.

 2.Strong Leak-Free Connections

Designed for copper pipe systems requiring stable pressure resistance and long-term durability.

 3.No Extra Flux Needed for Copper-to-Copper Brazing

The phosphorus content provides self-fluxing capability, simplifying operation and reducing material cost.

 4.Stable Quality Every Batch

Strict production control ensures consistent chemical composition and reliable brazing performance.

 5.Cost-Effective Solution

Especially for the BCuP-2 (0% Silver) grade, customers can achieve excellent brazing performance with

lower material cost.

Ideal Applications

 • HVAC manufacturing

 • Refrigeration systems

 • Copper pipe installation

 • Air conditioning maintenance

 • Heat exchangers

 • Industrial copper joining

 • Plumbing systems

BCuP- 2 — Best Choice for Economical Copper Brazing

Typical Composition:

Copper: Remainder

Phosphorus: 7.0-7.5%

Other (Total): 0.15%

About XINXIN WELDING

 TONGLING XINXIN WELDING MATERIALS CO., LTD. is a professional manufacturer specializing in

brazing and welding materials.

Main Products:

 • Phos-Copper Brazing Rods

 • Silver Brazing Alloys

 • Brass Welding Rods

 • Copper Brazing Flux

 • Aluminum Welding Wire

 • Flux-Cored Brazing Materials

Contact Us

Website: www.superlionwelding.com

Email: jasmine@xxhccn.com

WhatsApp: +86 13705623213

XINXIN WELDING

Reliable Welding Solutions. Trusted Worldwide.

In today’s HVAC, refrigeration, plumbing, and industrial manufacturing industries, reliable brazing

performance is more important than ever.

Whether for copper pipe installation, heat exchanger production, or industrial metal joining, customers

demand:

• Strong joints

• Smooth flow

• Stable quality

• Long-term reliability

That is why professionals worldwide are choosing:

XINXIN 40% Brazing Filler Metal

Developed by XINXIN WELDING — TONGLING XINXIN WELDING MATERIALS CO., LTD., our

40% silver brazing alloy is designed to deliver consistent performance, excellent wetting action,and

dependable brazed joints across a wide range of applications.

Excellent Flow Performance for Professional Brazing

XINXIN 40% Brazing Filler Metal is formulated for brazing:

• Copper

• Brass

• Steel

• Copper alloy components

The alloy offers:

• Smooth capillary flow

• Strong bonding strength

• Excellent wettability

• Stable melting performance

• Reliable leak-free joints

Its controlled melting range allows easier operation even when joint clearances are not perfectly

uniform, making it ideal for professional production and repair work.

Designed for HVAC & Refrigeration Industries

Modern HVAC and refrigeration systems require brazed joints that can withstand:

• Pressure

• Vibration

• Temperature fluctuations

• Long-term service conditions

XINXIN 40% Brazing Filler Metal is widely used in:

• Air conditioning systems

• Refrigeration equipment

• Heat exchangers

• Copper piping systems

• Industrial cooling systems

• Automotive repair and fabrication

The alloy provides strong mechanical performance while maintaining excellent flowability during

brazing operations.

Better Brazing Starts with Better Flux

To achieve the best brazing performance, XINXIN recommends using:

QJ102 Brazing Flux

Our professional brazing flux is specially designed to:

• Remove oxides efficiently

• Improve wetting performance

• Reduce oxidation during heating

• Promote clean and reliable brazed joints

The combination of:

XINXIN 40% Brazing Filler Metal + QJ102 Brazing Flux

provides a complete professional brazing solution trusted by customers worldwide.

Why Customers Choose XINXIN WELDING

At XINXIN WELDING, we focus on delivering:

• Stable product quality

• Competitive pricing

• Fast delivery

• OEM & customized service

• Professional export support

With years of manufacturing experience in brazing materials, our products are exported to

customers across:

• Southeast Asia

• Middle East

• Europe

• South America

• Africa

We are committed to helping distributors, importers, and industrial users build stronger business partnerships through reliable welding solutions.

About XINXIN WELDING

TONGLING XINXIN WELDING MATERIALS CO., LTD.

Main Products:

• Silver Brazing Alloys

• Brass Brazing Rods

• Phos-Copper Brazing Rods

• Aluminum Welding Wire

• Brazing Flux

• Flux-Cored Brazing Materials

Contact XINXIN WELDING

Website: www.superlionwelding.com

Email: jasmine@xxhccn.com

WhatsApp: +86 137 0562 3213

XINXIN WELDING

Reliable Welding Solutions. Delivered Worldwide.

Stop Overpaying for Brazing Rods in Thailand

 Thailand’s HVAC and automotive industries are growing fast. But many distributors and contractors are still

facing the same problems:

▶European brazing rods are too expensive

▶Local supply is limited or inconsistent

A Better Alternative for Thai Market

HS221 Brass Brazing Rod – From XINXIN WELDING

We designed HS221 not just as a product—but as a solution for real working conditions in Thailand.

What Makes It Fit Thailand Market

Easy to Use for Local Workers

▶Smooth melting

▶Good flow on copper pipe

▶Works well with standard torch equipment

Works in Real Job Conditions

▶High temperature

▶High humidity

▶Outdoor installation

▶Stable performance under all conditions

Lower Cost, Same Job Done

▶Replace expensive EU brands

▶Better stability than low-end products

▶Helps distributors increase margin

▶Helps contractors win more projects

Ideal for Thai Main Applications

▶Air conditioning installation (copper pipe)

▶Refrigeration systems

▶Automotive radiator repair

▶General workshop use

Why Thai Distributors Choose Us

▶Stable quality (no batch problems)

▶Competitive pricing (easy to resell)

▶Fast sample support

▶OEM branding for local market

Looking for Thailand Partners

We are looking for long-term partners in Thailand:

▶Welding distributors

▶Brazing material importers

▶HVAC supply companies

Contact Us

TONGLING XINXIN WELDING MATERIALS CO., LTD

Brand: XINXIN WELDING

WeChat: 3486525212

WhatsApp: +86 13705623213

A connector failure rarely happens on day one.

It happens months later.

A relay spring loses its elasticity.

A terminal overheats.

A switch stops responding.

A customer files a complaint.

And suddenly, a low-cost material becomes a very expensive mistake.

Why High-Reliability Manufacturers Choose CuNi9Sn2

CuNi9Sn2 (C72500) Copper Nickel Tin Alloy was developed for applications where ordinary copper alloys simply

cannot deliver long-term reliability.

By combining the conductivity of copper with the strength of nickel and tin, CuNi9Sn2 provides an exceptional

balance of:

• High Mechanical Strength

• Excellent Fatigue Resistance

• Superior Stress Relaxation Performance

• Outstanding Corrosion Resistance

• Reliable Electrical Conductivity

• Excellent Formability and Weldability

The result? Components that maintain their performance after years of repeated use.

Designed for Critical Electrical Applications

Modern electrical systems are becoming smaller, faster, and more demanding.

CuNi9Sn2 is widely used for:

• Electrical Connectors

• Relay Springs

• Switch Contacts

• Circuit Breaker Components

• PCB Pins and Terminals

• Electronic Module Housings

• Automotive Electrical Systems

• Telecommunication Equipment

Built to Resist Harsh Environments

CuNi9Sn2 offers excellent resistance to corrosion and stress corrosion cracking, helping manufacturers extend

product life and reduce maintenance costs.

Lower Failure Rates. Higher Customer Satisfaction.

When a connector, spring, or terminal fails, the cost is often much greater than the material itself.

It may include:

• Product recalls

• Warranty claims

• Production downtime

• Brand reputation damage

Choosing CuNi9Sn2 helps reduce these risks and improves overall product reliability.

Why Work With XINXIN WELDING?

At XINXIN WELDING, we supply high-quality copper alloy materials designed to meet the demanding requirements

of global industries.

Our advantages include:

• Stable Chemical Composition

• Strict Quality Control

• Consistent Mechanical Properties

• Custom Sizes Available

• Fast International Delivery

• Professional Export Support

For customers who refuse to compromise on quality, reliability, and performance, XINXIN WELDING provides

material solutions you can trust.

XINXIN WELDING

Stronger Materials. Longer Service Life.

Reliable Copper Alloy Solutions for Global Industries.

Website: www.superlionwelding.com

Walk onto almost any refrigeration or air-conditioning job site, and you will find one common challenge:

joining different metals quickly, securely, and without leaks.

Copper tubing, brass valves, steel fittings, filter driers, compressors, and refrigeration components all require

strong, reliable joints that can withstand pressure, vibration, and temperature changes for years.

This is exactly where Platinum K Brazing Rods from XINXIN WELDING make a difference.

Designed for Copper, Brass, Steel, and Stainless Steel

Unlike ordinary phosphorus-copper brazing rods that are mainly used for copper-to-copper joints, B K Brazing

Rods are suitable for joining a wider range of metals, including:

        Copper to Brass, Copper to Steel, Copper to Stainless Steel, Brass to Steel, Stainless Steel Components,

and Refrigeration & HVAC Assemblies.

The Preferred Choice for HVAC and Refrigeration Systems

Modern air-conditioning and refrigeration systems operate under high pressure and constant vibration. Platinum

K Brazing Rods produce strong, leak-resistant joints that help maintain long-term system reliability.

Typical applications include air-conditioning installation, refrigeration system repair, copper pipe connections,

compressor assembly, condenser manufacturing, evaporator production, and heat exchanger fabrication.

Helping Technicians Work More Efficiently

B K Brazing Rods offer excellent flow characteristics and smooth wetting action, allowing the filler metal to spread

evenly through the joint. This helps reduce rework and improve productivity.

Built for Long-Term Reliability

Industrial equipment, refrigeration systems, and HVAC installations are exposed to vibration, thermal cycling, and

changing operating conditions. A quality brazed joint must remain strong year after year.

Why Professionals Choose XINXIN WELDING

At XINXIN WELDING, we understand the requirements of HVAC contractors, refrigeration engineers, and industrial

manufacturers. Our B K Brazing Rods are manufactured to deliver consistent quality, excellent brazing performance, and

reliable results across a wide range of applications.

Company Information

TONGLING XINXIN WELDING MATERIALS CO., LTD.

Brand: XINXIN WELDING

Website: https://www.superlionwelding.com/

Email: jasmine@xxhccn.com

WhatsApp: +86 13705623213

In modern industrial manufacturing, whether it’s the intricate piping of HVAC systems or the precision repair

of heavy machinery, the quality of a brazed joint often determines the lifespan of the entire assembly. For welding

engineers, finding a filler metal that offers both exceptional flow and superior strength—while minimizing hazardous

fumes—is a constant challenge.

Today, we dive deep into the flagship product of Tongling Xinxin Welding Materials: RBCuZn-C (Nickel-

Bearing Low Fuming Bronze), and explore why it is the go-to choice for high-standard manufacturing.

1. RBCuZn-C: More Than Just "Low Fuming"

RBCuZn-C is a copper-based alloy classified under the AWS A5.8 standard. Unlike standard brass rods, its

composition is meticulously optimized with the addition of Nickel (Ni) and Silicon (Si), resulting in a qualitative leap

in performance.

The "Strength" of Nickel

The inclusion of Nickel significantly boosts the tensile strength and toughness of the joint. More importantly,

it dramatically improves the wetting action on steel, cast iron, nickel alloys, and even stainless steel. This ensures

the filler metal flows smoothly into the tightest gaps, creating dense, pore-free, and high-quality joints.

The "Clean" Magic of Silicon

Acting as a deoxidizing agent, Silicon effectively controls the evaporation of zinc. This not only reduces the

annoying white fumes (zinc oxide) during brazing—creating a cleaner work environment—but also ensures the

integrity of the weld by preventing the loss of mechanical properties due to "zinc burnout."

2. Core Advantages: Stable, Fast, and Strong

Universal Compatibility

● A truly versatile alloy, ideal for oxy-acetylene brazing of steel, cast iron, copper alloys, and nickel alloys.

Excellent Machinability

● The resulting weld bead is easy to grind, turn, or machine, simplifying post-weld finishing.

Wear & Corrosion Resistance

● Thanks to the Nickel content, the weld metal exhibits superior resistance to corrosion and wear, making it

perfect for surfacing valve seats, bearings, and other high-friction components.

3. Why Choose Tongling Xinxin Welding Materials?

As a specialist in copper alloy brazing solutions, Tongling Xinxin Welding Materials provides more than

just products; we deliver welding consistency.

High-Purity Raw Materials

● We strictly source electrolytic copper to ensure minimal trace impurities and stable chemical composition

across every batch.

Precision Drawing Process

● Utilizing multi-stage precision drawing and advanced surface treatment, our rods feature a high-gloss finish

for smooth feeding without contamination.

Versatile Supply Forms

● Available in straight rods, spools, and customized brazing rings specifically designed for the refrigeration industry.

Global Technical Support

● From Southeast Asia to South Asia, our technical team provides optimized process recommendations for

refrigeration, heavy industry, and surfacing applications.

4. Key Applications: From Lab to Factory

HVAC & Refrigeration: High-efficiency brazing of air conditioner compressors, evaporators, and piping.

Automotive Parts: High-strength brazing of shift forks and tubular brackets.

Maintenance & Repair: Crack repair in cast iron and buildup of worn shaft surfaces.

Conclusion

Brazing is not just about joining; it’s about extending the performance of materials. Tongling Xinxin’s RBCuZn-C

empowers your production with the strength of nickel.

If you are looking for a brazing solution that improves efficiency, enhances the shop floor environment, and

ensures joint integrity, contact us today for sample testing.

Tongling Xinxin Welding Materials Co., Ltd.

Your Professional Partner in Copper Alloy Brazing

When it comes to high-quality brazing, a frequently asked question among professional welders and procurement

managers is: "What kind of brass rods do you all use?"

Choosing the right brass brazing rod isn't just about making two metals stick together; it's about ensuring structural

integrity, leak-proof joints, and long-term durability. At XINXIN  Welding (Tongling Xinxin Welding Materials Co., Ltd.), we

leverage over 20 years of technical expertise to manufacture industry-leading brass brazing alloys.

Here is a breakdown of the brass rods our global partners rely on every day, and how to choose the right one for

your business.

1. Our Premium Brass Rod Categories

The Industry Standard:RBCUZN-A Brass Brazing Rods

Our most demanded product is the RBCUZN-A Brass Brazing Wire/Rod. This is a specialized copper-zinc alloy

containing approximately 0.8% to 1.2% tin (Sn).

▶ Why Tin Matters: The addition of tin significantly improves the fluidity of the molten metal, refines the crystal grains,

and reduces the evaporation of zinc during welding.

▶ Key Benefits: Exceptional tensile strength, excellent corrosion resistance, and beautiful weld formation.

▶ Best For: Joining copper, steel, copper-nickel alloys, cast iron, and inlaying carbide cutting tools.

The User-Friendly Innovation: Flux-Coated Brass Rods

For operations looking to boost efficiency, we offer Flux-Coated Brass Rods that streamline production workflow.

▶ How it Works: These rods come pre-coated with a precise layer of high-performance brazing flux.

▶ Key Benefits: Eliminates the extra step of applying separate flux powder. It saves labor time, reduces material waste,

and ensures a cleaner, more consistent braze joint every single time.

2. Why Global OEMs Trust Superlion Welding

Elevate Your Welding Standards Today

Stop guessing which brass rod fits your project. Let the technical experts at XINXIN Welding guide you to the perfect solution. We don't just sell welding materials; we solve your brazing challenges.

▶ Contact us today for free samples or a customized quote: [jasmine@xxhccn.com]

▶ Explore our full catalog: www.superlionwelding.com