Detail Information
Product Description

Detail Information
Dimensional Stability:	High	Tensilestrength:	Up To 2500 MPa
Flexural Strength:	1500 - 3000 MPa	Size:	Customized
Melting Point:	2,870°C	Lifespa:	Long
Working Temperature:	-200°C ~ +800°C	Hole Size:	1.6 Inner Hole
Quenching Temperature:	1400 - 1600°C	Thermal Conductivity:	70 - 100 W/m·K
Highlight:	Ultra-High Precision Valve Core , Mirror Finish Ra0.2 μm Carbide Valve Core , High Temperature Resistance Tungsten Carbide Valve Core

Product Description

Ultra-High Precision Tungsten Carbide Valve Core

Product Overview

In critical industrial fluid control applications, the wear resistance and sealing performance of valve cores directly determine system lifespan and reliability. This product is manufactured from primary ultra-fine grain tungsten carbide and features a Ra0.2 μm (mirror-grade) surface finish achieved through advanced grinding and polishing processes.

This exceptional surface finish significantly reduces friction coefficient during valve core movement while effectively preventing particle adhesion from media, enhancing corrosion resistance and anti-erosion capabilities. Widely used in high-parameter valves across industries including petrochemicals, coal chemicals, high-pressure water jetting, hydrogen energy equipment, and deep-sea oil extraction.

Key Features

Premium Material: Manufactured from YG series (YG6/YG8) or sub-micron/nano tungsten carbide with hardness of HRA 89-93, offering high compressive strength and impact toughness.
Mirror Finish (Ra0.2): Achieved through fine grinding, lapping, and mirror polishing processes, ensuring consistent surface roughness at Ra 0.2μm. This mirror-like finish promotes effective "micro-seal" oil film formation, minimizing internal leakage.
Superior Wear Resistance: Tungsten carbide's wear resistance is dozens of times higher than standard stainless steel (316L), making it ideal for high differential pressure, high sand content, or particulate media applications.
High Temperature & Pressure Resistance: Maintains high red hardness at elevated temperatures, suitable for frequent start-stop cycles in high-pressure environments.

Technical Specifications

Parameter	Unit	Value/Standard	Notes
Material Composition	%	WC + Co (Cobalt Binder)	Options: YG6X, YG8, YN6, etc.
Surface Finish	µm	Ra ≤ 0.2	Mirror Polished Grade, achievable down to Ra0.1
Hardness	HRA	89 - 93	Equivalent HV approx. 1300-1700
Density	g/cm³	14.5 - 15.0	High density, porosity-free
Transverse Rupture Strength	MPa	≥ 2500	Ensures resistance to fracture under impact
Concentricity	mm	≤ 0.005	Ensured by precision grinding
Cylindricity	mm	≤ 0.002	Guarantees sealing fit accuracy
Operating Temperature	℃	-200 ~ +650	Higher in inert gas or vacuum environments
Mating Clearance	mm	0.005 - 0.015	Customizable based on working conditions
Standard Size Range	mm	Diameter Ø6 - Ø150	Custom non-standard sizes available upon request with drawings

Applications

Severe Service Ball/Gate/Globe Valves: As the core opening and closing component
High-Pressure Differential Control Valves: Resists cavitation and erosion
Plunger Pumps/Metering Pumps: Used as plungers; the Ra0.2 finish significantly extends seal life
Wear-Resistant Slurry Valves: Suitable for transporting slurries containing solid particles
Wellhead Equipment & Christmas Trees: Resists H₂S/CO₂ corrosive environments

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Product Details:
Place of Origin:	China
Brand Name:	Sanxin
Certification:	ISO9001
Model Number:	SX-2295
Payment & Shipping Terms:
Minimum Order Quantity:	10pcs
Price:	Negotiation
Payment Terms:	L/C,T/T
Supply Ability:	10000pcs/month

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