Products

Composite Carbide Welding Rod

The Composite Carbide Welding Rod combines WC-Co cemented carbide grains with a copper-based wear-resistant alloy. After overlay welding, it forms a high-hardness and wear-resistant surface layer, providing durable protection and refurbishment for oilfield and mining equipment under combined abrasive and impact wear.

Usage: Mainly used in oil and gas drilling( fishing tools, centralizers, hole openers), milling tools, agricultural machinery, grain and oil machinery, etc.

Feature: High hardness and cutting capability. The cemented carbide part forms a sharp edge for cutting operations, while the dull edge can be restored through grinding for grinding applications.

Size: 1.6~9.5mm. Can be tailored to customer requirements.

Description

Excellent wear resistance with strong retention of edge geometry
Tough copper-based matrix enhances weldability and bonding strength
Reliable protection against impact and abrasive media
Suitable for casting steel, carbon steel, and high-manganese steel
Compatible with TIG/gas welding / submerged arc welding

Composition & Structure

Project	Ingredients/Materials	Function
Rigid phase	WC-Co cemented carbide (tungsten carbide-cobalt cemented carbide)	Provides hardness, wear resistance, and anti-abrasion performance
coupling phase	Copper-based alloy	Improves wetting and bonding strength, enhances impact resistance

Specification

Model	Diameter range (mm)	Length （mm）	Characteristic
3BD6455	1.6-3.2	450	Suitable for fine and wear-resistant repair
3BD6457	3.2-4.6	450	General wear-resistant overlay welding
3BD6458	4.8-6.4	450	Load wear protection
3BD6460	6.4-8.0	450	Impact and wear combined conditions
3BD6462	8.0-9.5	450	Large-area cladding, equipment repair

Customized sizes available based on application needs.

Performance Parameters vs. Industry Standards

Performance index	Alloy composite welding rod (3BD64)	Traditional manganite welding rod	Common tungsten carbide electrode
Wear resistance (relative value)	10-15	1	5-8
Impact toughness (J/cm²)	12-15	25-30	8-10
Welding bond strength (MPa)	≥350	200-250	280-320

Note: The wear resistance is based on high-manganese steel (1.0), with data sourced from industry standard testing (ASTM G65 dry sand rubber wheel wear test).

Typical Applications

Mining equipment:

Jaw crusher tooth plates

Hammers, blades, screens

Wear parts of conveying systems

Oilfield drilling & production:

Wear-resistant repair of directional drilling tools

Hard-facing of drill string joints and centralizers

Overlay on wear parts of BOPs and wellhead devices

Reduce downtime and maintenance costs through repair-instead-of-replacement.

FAQ

Production cycle

Our factory typically produces items based on orders. The production cycle ranges from 3 to 10 working days, depending on the order size.

However, production may be sequenced during high-order volume periods, potentially extending the production cycle.

If timely delivery is crucial for you, please consult with our sales team to confirm a more accurate timeline.

Shipping time

We cooperate with DHL, FedEx, UPS, TNT, and other major carriers. If you do not specify a preferred carrier, our follow-up department will select the most suitable one.

Typically, delivery to Europe and America takes about 7 days, to Asian countries 3-4 days, and to other American countries 10-15 days. Please note that the exact times are subject to the schedules published by the shipping companies.

Will the products arrive in good condition?

Yes. All products go through strict quality inspections before shipping and are packed with carefully designed protective packaging to ensure they arrive in perfect condition, with no quality issues or damage during transportation.

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