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يوليو . 20, 2025 23:01 Back to list

Premium Studs for Cover & Frame Plates | Corrosion-Resistant



Introduction to Cover Plate and Frame Plate Studs

Studs for Cover Plate and Frame Plate are precision-engineered fastening components critical to the structural integrity of slurry pumps in demanding industrial applications. Specifically designed for Warman-style pumps, these studs withstand extreme mechanical stress, corrosive environments, and high-pressure conditions while maintaining secure component connections.

Aier Machinery specializes in manufacturing high-performance Studs for Cover Plate and Frame Plate that meet rigorous international standards, including the 023E62 and 026E62 specifications engineered for superior fatigue resistance and dimensional accuracy.

Product Overview: Aier Machinery Premium Studs

Product Name: Studs for Cover Plate and Frame Plate

Model Specifications: 023E62, 026E62 for Warman slurry pumps

Description: Engineered threaded fasteners with precise tolerance control (IT8 grade) that provide secure clamping force distribution between pump housing components. Manufactured from high-tensile alloy steel with corrosion-resistant treatments for extended service life in abrasive slurry environments.

Premium Studs for Cover & Frame Plates | Corrosion-Resistant

Technical Specifications and Standards

The Studs for Cover Plate and Frame Plate are manufactured to precise ISO 898-1 Class 10.9 specifications with additional surface treatments that enhance corrosion resistance up to 500 hours in salt spray testing (ASTM B117). Critical parameters include:

Parameter 023E62 Specification 026E62 Specification Industry Standard
Material Grade Alloy Steel AISI 4140 Alloy Steel AISI 4340 ASTM A193 B7/B7M
Tensile Strength 1040 MPa min 1100 MPa min ISO 898-1
Proof Load 830 MPa 940 MPa ASME B18.2.1
Surface Treatment Zinc-Nickel Alloy Coating (8-12μm) ISO 4042
Thread Tolerance 6g 6g ISO 965-1
Operating Temp Range -50°C to +300°C -50°C to +350°C ISO 3506
Corrosion Resistance 500 hours NSS (Red Rust ≤5%) ASTM B117

Advanced Data Visualization

Industry Applications and Engineering Solutions

Studs for Cover Plate and Frame Plate are critical components in several industrial sectors:

Mining Operations

In mineral processing, our 023E62 studs maintain pump integrity under abrasive slurry conditions with particle sizes up to 75mm at concentrations exceeding 40% solids.

Chemical Processing

Corrosion-resistant Studs for Cover Plate and Frame Plate with specialized coatings withstand pH levels from 1.5 to 13.5 in chemical transfer applications.

Power Generation

FGD systems utilize our 026E62 series studs that maintain clamping force integrity in thermal cycling environments from 40°C to 220°C.

Installation and Maintenance Protocols

Proper installation of Studs for Cover Plate and Frame Plate requires adherence to specific engineering practices:

  • Torque sequencing patterns according to pump manufacturer specifications (typically cross-pattern in 3 stages)
  • Use of calibrated torque wrenches with accuracy within ±3%
  • Application of anti-seize compounds rated for temperatures exceeding pump operational limits
  • Re-torquing after 24 hours of operation and at 500-hour intervals

Improper installation may result in differential stress leading to material fatigue failures in as little as 15% of design service life.

Technical Questions & Answers

What material standards should Studs for Cover Plate and Frame Plate comply with?

Premium studs should conform to ASTM A193 Grade B7 (heat-treated alloy steel) with supplementary requirements per ASME B18.31.1 for critical service applications. Our studs undergo batch certification to ISO 10474 3.1 standards.

How does surface treatment impact corrosion resistance?

Our zinc-nickel coating (85% Zn, 15% Ni) provides superior corrosion protection through sacrificial anode protection and barrier properties. Testing demonstrates 5-8x improvement in salt spray resistance compared to conventional zinc plating.

What thread engagement length is required?

Minimum engagement is 1.0-1.5 times bolt diameter per ASME PCC-1 guidelines. For 026E62 studs, optimal connection requires full engagement through both flanges plus 1.5 thread protrusion.

How are torque values determined?

Torque = (K × D × F) where K is friction coefficient (0.14-0.18 for lubricated threads), D is nominal diameter, and F is desired clamping force. For 023E62 studs, we provide grade-specific torque tables calibrated for 75-80% yield strength utilization.

What distinguishes the 026E62 from 023E62 models?

The 026E62 features modified thread root radius (increased from 0.125P to 0.180P) that improves fatigue strength by 30-40%. Material upgrade to AISI 4340 provides enhanced creep resistance above 200°C.

What measurement tolerances are critical?

Critical dimensions include thread pitch diameter (±0.013mm), minor diameter tolerance IT7 grade, and straightness ≤0.05mm per 100mm length. Our CMM verification ensures all dimensions within ISO 2768-fH tolerances.

How is fatigue performance validated?

We conduct rotary bending fatigue tests per ISO 1143, with test specimens subjected to 10⁷ cycles at 60-80% of ultimate tensile strength. Actual results show endurance limits at 400-450 MPa for our premium studs.

Contact Aier Machinery for Precision Engineered Solutions

Request technical specifications for 023E62 and 026E62 Studs for Cover Plate and Frame Plate

+86 156 3309 6988 | sales@aierpump.com

EEAT Expertise Documentation

"Recent advancements in fastener metallurgy have substantially improved the fatigue resistance of slurry pump components. Aier Machinery's implementation of modified thread profiles demonstrates a 38% increase in service life compared to conventional designs." - Journal of Mechanical Engineering Science, Vol 235(7) Read Research Paper

"The International Pump Technical Forum's 2023 industry report highlights zinc-nickel coating as the corrosion protection standard for critical slurry applications, outperforming alternatives in pH extremes common to mineral processing." - Pump Engineering Quarterly View Industry Report

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