Kothari Metsol – India’s Trusted Solder Wire Brand
Cracked solder joints are one of the most common problems in electronics. They cause loose connections, unstable devices, and repeated repairs. Many users want to know why this happens and how to stop it. This guide explains the exact reasons and shows how rosin core solder wire from Kothari Metsol helps you create strong, long-lasting joints.
What Causes Solder Joints to Crack?
Your solder joints crack for a few simple and clear reasons. When you understand them, you fix the problem fast.
1. Wrong Heating Technique
If you heat the joint too fast or too slow, the solder does not bond well. The joint becomes weak and breaks during use.
2. Poor Quality Flux Core Solder
Low-grade flux core solder wire does not flow well. It forms dull and uneven joints that crack when the device heats or vibrates.
3. Movement During Cooling
Solder needs stillness. If the component moves while the joint cools, the solder pulls apart and forms a hairline crack.
4. Dirty or Oxidised Surfaces
Dust, oil, or oxidation stop the solder from sticking. This creates joints that break with even light pressure.
5. Wrong Solder Type for Your Work
Electronics need clean, smooth flow. A wrong grade or poor-quality alloy leads to brittle joints.
How Rosin Core Solder Wire Helps Prevent Cracked Joints
Rosin core solder wire from Kothari Metsol gives you clean flow, strong bonding, and smooth joints. This prevents cracking and improves product life.
1. Rosin Cleans the Joint While You Work
The rosin inside the solder removes oxidation at the moment of soldering. This gives you a clean surface and a strong bond.
2. Smooth and Controlled Flow
Our flux core solder wire melts evenly. This helps you create round, shiny, and solid joints that do not fail during heating cycles.
3. Stronger Bonding
Rosin core solder holds the metal firmly. It creates a tight grip that stops cracks caused by vibration, stress, or heat changes.
4. Higher Reliability in Electronics
You get stable joints for PCB repair, automotive wiring, audio equipment, motors, and small appliances. Your work stays safe even under load.
5. Clean Finish With Less Residue
Kothari Metsol’s solder wire leaves very little residue. This reduces corrosion and keeps joints strong for years.
How to Stop Solder Joints from Cracking – Simple Fixes
Use these quick steps to improve your results instantly:
✔ Keep the tip clean
✔ Heat the pad and component evenly
✔ Avoid shaking the part until the solder cools
✔ Use only high-quality flux core solder wire
✔ Use the right diameter for your project
✔ Keep the surface free from dust and oil
These steps reduce errors and improve the strength of every joint.
Why Choose Kothari Metsol Solder Wire in India?
Kothari Metsol is one of India’s trusted names in soldering and flux technology. Our products bring:
• Consistent quality
• Strong joints
• Smooth flow
• Low-smoke flux
• Reliable performance for home, hobby, and industrial use
Our rosin core solder wire and flux core solder solutions help thousands of technicians get clean results every day.
Ready to Improve Your Soldering?
Explore our Rosin Core Solder Wire Range
Check our Flux Core Solder Wire Products
Contact us for bulk orders, industrial supply, or custom diameters
