Why Brass Welding Rod Must Be Used with CJ301 Brazing Flux

Better Flow. Stronger Joints. More Reliable Brazing.

When using brass welding rods, many users focus only on the welding rod itself.

However, professional brazing engineers understand that the brazing flux is one of the most important

factors affecting final brazing quality.

Even high-quality brass brazing rods can produce poor results if the wrong flux is used.

That is why professional customers worldwide increasingly choose:

HS221 Brass Brazing Rod + CJ301 Brazing Flux

From XINXIN WELDING

This combination is specially developed to provide:

• Smoother brazing flow

• Cleaner joints

• Better wetting

• Stronger bonding

• More stable brazing performance

for HVAC, refrigeration, plumbing, automotive, and industrial applications.

Why Is Brazing Flux Necessary for Brass Welding Rod?

During brass brazing, the workpiece is heated to high temperatures.

At these temperatures:

• Copper and brass surfaces oxidize rapidly

• Oxide films block filler metal flow

• Wetting performance decreases

• Brazing strength becomes unstable

Without proper flux protection, operators may experience:

• Poor flowability

• Black oxidation

• Weak joints

• Porosity

• Difficult operation

• Leakage problems

Especially in:

• Air conditioning systems

• Refrigeration copper pipes

• Heat exchangers

• Automotive radiator repair

• Brass fittings

stable brazing quality is critical.This is why CJ301 Brazing Flux is essential.

Why Choose CJ301 Brazing Flux from XINXIN WELDING?

Excellent Oxide Removal

CJ301 effectively removes oxides during heating and protects the metal surface from further oxidation.

This allows:

• Better capillary action

• Smoother filler metal flow

• Cleaner brazing appearance

• Higher joint strength

Perfect Match with HS221 Brass Brazing Rod

Unlike ordinary fluxes, CJ301 is specially optimized for use with:

HS221 Brass Brazing Rod

This combination improves:

• Fluidity

• Joint penetration

• Brazing stability

• Heating efficiency

The result is cleaner and stronger brazed joints with easier operation.

Cleaner Brazing Performance

Low-quality fluxes often create:

• Heavy smoke

• Strong odor

• Excessive residue

• Difficult cleaning

CJ301 is designed for:

• Low residue

• Stable heating performance

• Cleaner brazing operation

• Better workshop environment

Stronger Joints = Fewer Customer Complaints

Using HS221 Brass Welding Rod + CJ301 Flux helps achieve:

• Dense brazed joints

• Excellent sealing performance

• Better vibration resistance

• Long-term durability

Save Time. Reduce Cost. Improve Efficiency.

CJ301 helps operators:

• Reduce heating time

• Improve brazing speed

• Lower rejection rates

• Reduce material waste

About XINXIN WELDING

Brand: XINXIN WELDING

Company: TONGLING XINXIN WELDING MATERIALS CO., LTD.

Main Products:

• HS221 Brass Brazing Rod

• Phos-Copper Brazing Rods

• Silver Brazing Alloys

• CJ301 Brazing Flux

• Aluminum Welding Wire

• Flux-Cored Brazing Materials

Contact Information

Website: www.superlionwelding.com

Email: jasmine@xxhccn.com

WhatsApp: +86 137 0562 3213