Products - Grindwell Norton

Home

Corporate

Businesses

Next

	Typical Applications
	Surface grinding Tool and cutter grinding Drill sharpening Cylindrical grinding

	Product Offerings
	SG 32A 86A-Mikron 68A-Mikron 38A

Troubleshooting Guide

Stock Availability Tables

Also See(pdf) : Mikron-Toolroom

Abrasive Relative Performance Chart
Grinding Ratio

SG The world's best vitrified toolroom wheel is now available in India. It will work on your current grinding machine and drastically lower your total grinding costs.

	Features	Benefits
	High performance ceramic aluminium oxide abrasive	Fast stock removal; cool cutting Allows increased depth of cut and hence increased material removal rate and reduced cycle time Reduced spark out time again resulting in lower cycle time

	Self-sharpening abrasive	Significant reduction in burn occurrences and dressing frequency No metallurgical damages

	High performance vitrified bond	Enhanced wheel life, superior form holding

Top

Wheel Dressing

For best results while dressing/truing your wheel, use any of the wide range of Norton Diamond Dressers available.

32A is the standard in toolroom. Its versatility and performance increase your production when compared to other aluminium oxide products.

32A

	Features	Benefits
	Sharp monocrystalline abrasive	Outstanding form holding, freer cutting

	Advanced bond technology	Optimum porosity, strength and rigidity for precision grinding.

Top

38A Mikron PLUS- a combination of a revolutionary Norton Bond 38A and the best abrasive is wheel crafted with precision for precision applications, offering added value to end-users.

38A

	Features	Benefits
	New advanced abrasive	Cooler and freer cutting, broad versatility

	Tighter dimensional, geometrical tolerance, better balance	Minimal vibration, increases efficiency and accuracy of grinding process.

Top


Abrasive		Grit	Grade	Bond	Porous Bond	Dressing Tool

More Durable	SG	46 (Coarse)	F (Soft)	VH, VS	VSP	SG Tool
	32A			VBE/VH	VBEP	Standard Tool
					VBEP	Standard Tool
More Friable	38A	220 (Fine)	Q (Hard)	VBE/VH	VBEP	Standard Tool

How To Use Spec Check:

Abrasive: Select abrasive type based on required performance, stock removal rate and material type.	Bond: Select the appropriate bond based on the abrasive selected, and the contact area.
Grit Size: Select the grit size depending on finish required and stock removal rate needed.	Grade: Selection based on bond selected and contact area.

Abrasive:	Bond:
SG: Exceptional durability and coolness of cut for all high speed tool steels especially the most difficult-to-grind. Use on the most demanding applications for the highest level of performance of moderate to very heavy stock removal rates.	VS: SG abrasive only. High stock removal; medium/wide* contact area; cool cutting; less burn; high chip clearance.
32A: A strong, sharp, very versatile abrasive for a wide range of applications. For all tool steels requiring moderate to heavy stock removal rate.	VBE: 32A (Off-white) and 38A (White) only. General purpose; narrow/medium* contact area; cool cutting; less burn; high chip clearance; high stock removal.
86A: A friable abrasive with exceptional cool cutting characteristics.	VBEP: 32A (Off-white) and 38A (White) only. Porous bond; medium/wide* contact area; cool cutting; less burn; high chip clearance; high stock removal
38A: The most friable abrasive for light grinding applications on all tool steels. Offers outstanding coolness of cut in light to medium stock removal rates.	VH: Superior corner retention properties, engineered for precision applications,compatible with all the abrasives mentioned.

Grit:	Grade:
46: Typically for roughing and general purpose, finish rougher than 0.8 m Ra.	F-I: VSP bond — "G" grade to start, medium/wide* contact area.
60: Typically for commercial finish, 0.5, 0.6 m Ra.	I-K: VS bond — "I" grade to start for general purpose, narrow/medium* contact area.
80: Fine finish, 0.4 m Ra or better, corner/form applications.	K, L: VS bond — for narrow* contact area or form/corner holding applications.
	H-K: VBE bond — "I" grade to start, general purpose, narrow/medium* contact area.
	K, L: VBE bond — narrow* contact area;corner holding applications.
	F-H: VBEP bond — "G" grade to start, medium/wide* contact area.

* Definitions of contact area:
Wide : The contact area of grinding is greater than 50% of the wheel width or over 13 mm wide. Medium : The contact area of grinding is 25 -50% of the wheel width or over 6 - 13 mm wide. Narrow : The contact area of grinding is less than 25% of the wheel width or less than 6 mm wide.

Top

Troubleshooting Guide:

Problem	Possible Causes	Suggested Correction

Wheel corner breakdown	– Poor wheel dressing – Wheel too coarse – Wheel too soft – Worn machine bearings	– Fine-dress the wheel – Use finer grit – Use harder grade – Check for run-out and correct

Burns on workpiece	– Poor coolant flow – Wheel acting hard – Work speed too slow – Infeed too fast	– Increase or direct coolant flow to contact area – Dress wheel coarser or use softer wheel – Increase work speed – Reduce stock removal per pass

Poor surface finish or quality of grind	– Wheel too hard – Wheel too fine – Dirty coolant – Poor wheel dressing	– Use softer grade – Use coarser grit – Filter coolant or replace coolant – Increase dressing frequency or increase dresser traverse rate.

Top