Die-Forged 160-Type Connecting Link Ring For Mining Scraper Conveyor

Die-Forged 160-Type Connecting Link Ring for Mining Scraper Conveyor

Product Overview

The Die-Forged 160-Type Connecting Link Ring is a mission-critical component engineered for heavy-duty mining scraper conveyors (also known as armored face conveyors/AFC). Manufactured through precision closed-die forging, this link ring provides exceptional strength, wear resistance, and structural integrity, ensuring reliable connectivity in the most demanding underground mining environments.

Key Features & Advantages

1. Superior Load Capacity

   • Designed to meet 160-type specifications, suitable for high-tensile scraper chains.

   • Robust construction handles extreme dynamic loads and shock impacts during mining operations.

2. Enhanced Durability

   • Die-forging aligns the grain flow with the part's contour, maximizing fatigue resistance.

   • High-density material structure minimizes stress points and extends service life significantly.

3. Precision Fit & Compatibility

   • Precise dimensional control ensures seamless integration with standard 160-type scraper chains, pins, and flights.

   • Consistent geometry reduces wear on mating components and maintains conveyor alignment.

4. Material Excellence

   • Forged from high-grade alloy steel (e.g., 23MnNiMoCr54 or similar mining-grade steel).

   • Optional heat treatment (quenching & tempering) for optimized hardness (typically 40-45 HRC) and toughness.

5. Safety & Reliability

   • Eliminates failure risks associated with casting defects or welded joints.

   • Uniform mechanical properties ensure predictable performance under cyclic loading.

Technical Specifications

Applications

• Underground Longwall Mining: Connects scraper chains in armored face conveyors (AFC).

• Heavy-Duty Material Handling: Suitable for high-capacity coal, ore, and bulk material transport systems.

• Compatibility: Designed to work with 160-type chain assemblies, flight bars, and related conveyor components.

Why Choose Our Die-Forged Link Rings?

✅ Proven Performance – Manufactured specifically for the extreme conditions of mining operations.
✅ Reduced Downtime – Superior wear resistance lowers replacement frequency and maintenance costs.
✅ Quality Assurance – Strict adherence to international mining standards (DIN, ISO, JIS).
✅ End-to-End Traceability – Material certifications and heat treatment records provided.

Manufacturing Process

1. Material Selection – Premium alloy steel with certified chemical composition.

2. Precision Forging – Hot die-forging under controlled conditions for optimal metallurgy.

3. Heat Treatment – Quenching & tempering to achieve required hardness-toughness balance.

4. Machining – Critical surfaces machined to ensure precise fit.

5. Quality Inspection – Dimensional checks, hardness testing, and non-destructive testing (NDT) as specified.

6. Surface Treatment – Shot blasting for cleanliness; optional anti-corrosion coating.

FAQ

1. What is a "160-Type" connecting link ring?

The "160-Type" refers to a specific size and load-capacity specification for mining scraper conveyor chain links, conforming to industry standards such as DIN 22252. The number "160" typically denotes its nominal dimension or strength class, making it suitable for medium to heavy-duty longwall face conveyors.

2. Why choose die-forging over casting or welding?

The die-forging process shapes metal under high pressure within closed dies, eliminating internal defects, refining grain structure, and creating continuous grain flow. Compared to cast parts, it has no risk of shrinkage or porosity; compared to welded parts, it has no heat-affected zones or weld seam fatigue points. This results in superior fatigue life and impact resistance in high-stress mining environments.

3. What material is used, and can it be customized?

We primarily use mining-grade alloy steels such as 23MnNiMoCr54 or equivalent, known for high strength and wear resistance. Material can be customized based on your operational conditions (e.g., impact load, abrasion, corrosion).

4. What heat treatment is applied?

Standard treatment includes quenching and tempering to achieve an optimal balance of surface hardness (typically 40-45 HRC) and core toughness. Custom hardness and depth of hardening can be specified.

5. What quality inspections are performed?

We conduct:

• Dimensional inspection (100% critical dimensions)

• Hardness testing (Rockwell or Brinell)

• Mechanical testing (tensile, impact if required)

• Non-destructive testing (NDT) such as magnetic particle inspection (MPI) to detect surface flaws.

6. What is your production lead time?

• Standard 160-Type: 25-35 days for batch production.

• Customized orders: Lead time depends on design confirmation and die preparation; typically 40-50 days for first batch.

7. Is there a minimum order quantity (MOQ)?

• Standard parts: MOQ is 1000 pieces.

• Custom designs: MOQ negotiable, generally starting from 500 pieces plus die cost.

8. Can you provide certifications?

Yes, we provide:

• Material certificates (3.1 or 3.2 per EN 10204)

• Heat treatment reports

• Dimensional inspection reports

• Hardness test reports

• NDT reports (upon request)

9. How does this part integrate with the conveyor chain system?

The 160-Type link ring is designed to connect scraper bars (flights) and chain strands, forming a continuous moving assembly. Its precise geometry ensures smooth engagement with sprockets and minimizes wear on pins and other connecting components.

10. What are the main applications?

Primarily used in:

• Underground longwall coal mining (armored face conveyors)

• Heavy-duty bulk material handling systems

• Tunnel boring and hard rock mining conveyors