Welcome to Enquiry Jetvision Carbide Strip for Sand Making Machine

Tungsten carbide strips for sand making machine, typically referring to rod-shaped abrasive tools manufactured via powder metallurgy. These consist primarily of tungsten carbide (WC) with cobalt (Co) as the binder phase, and are produced in specific shapes and dimensions.

Characteristics: Possess exceptional hardness (HRA 90+), wear resistance, and moderate toughness.

Function: Serving as“abrasive strips”, their surface or entire mass incorporates abrasive particles (typically diamond or cubic boron nitride), or they function as grinding bodies themselves to perform grinding, polishing, and finishing operations on workpieces.

Primary Applications

Based on structure and operating principle, they are categorised into two main types:

1. Diamond/CBN Carbide Grinding Strips

The most common and widely applied type. Their structure comprises:

Base: Carbide bar.

Working Layer: A layer of diamond or cubic boron nitride abrasive grains firmly bonded to the carbide base via electroplating, brazing, or sintering processes.

Working Principle: Utilises the carbide substrate for robust support while employing the surface's superhard abrasive for cutting action.

Primary Applications:

Oilstones, Honing Bars: Employed for honing precision bores such as engine cylinders, hydraulic cylinder barrels, and gear holes to achieve exceptional dimensional accuracy, geometric precision, and surface finish (mirror-like effect).

Grinding/Profiling Bars: Employed to correct and shape the profile surfaces of other grinding wheels (e.g., ceramic-bonded CBN wheels).

Precision Grinding: Utilised for meticulous hand grinding or mechanical lapping of brittle-hard materials such as moulds (e.g., glass moulds, optical moulds), ceramics, gemstones, and cemented carbide itself.

2. Carbide Scraping Strips

This type directly leverages the inherent hardness, wear resistance, and ability to form sharp edges of cemented carbide.

Material: Entirely cemented carbide (typically YG grade, with slightly higher cobalt content for toughness).

Shape: Machined into bar form with cutting edges.

Working Principle: Functions like a‘scraper’, using its sharp edge to scrape the workpiece while simultaneously performing a grinding action.

Primary Applications:

Skin Passing/Levelling: Used after rolling or processing metal sheets (e.g., copper strip, aluminium strip, stainless steel strip) to remove surface scale and microscopic irregularities, achieving a smoother, flatter finish.

Roller Surface Cleaning: Removes adhered impurities from rolling mill rolls or other roller surfaces.

Specific Material Removal: Employed in specialised processes to scrape softer non-ferrous metals or non-metallic materials.

Outstanding Advantages

Exceptional Wear Resistance: The carbide substrate exhibits tens of times greater wear resistance than conventional steel substrates, delivering exceptionally long service life, excellent dimensional stability, and sustained machining precision over extended periods.

Superior Rigidity and Stability: Resists deformation, maintaining stability under high pressure and high speed grinding conditions, making it suitable for high precision machining.

Good Toughness: Compared to ceramic or pure diamond/CBN sintered bodies, the cemented carbide matrix offers superior impact resistance and is less prone to chipping.

High bonding strength with superhard abrasives: Through sintering or brazing, diamond/CBN abrasives achieve exceptional retention, preventing particle shedding and ensuring prolonged tool performance.

Excellent machinability: Carbide can be processed into complex strip shapes via wire cutting, grinding, and other techniques, accommodating diverse profile machining requirements.

Carbide abrasive strips serve as indispensable tools in modern ultra precision machining and hard material processing. They seamlessly integrate the toughness of carbide with the extreme hardness of diamond/CBN, delivering extended tool life, high precision, and exceptional stability under demanding conditions. Their application spans critical operations such as final honing of engine core components and precision polishing of high end moulds.