W-series Webster hardness tester for Aluminum Alloy Metal Portable Hardness Tester

Introduction

A portable Webster hardness tester which can perform on-site hardness test on aluminum alloys. The test result can be got with only a simple clamp. It is convenient, efficient and reliable.
Webster hardness tester is the preferred instrument for testing aluminum alloys mechanical performance in accordance with American standard ASTM B647.
Used for quick test the hardness of aluminum profiles, tubing, sheets, accessories and other soft metal. Especially suitable for quick, non-destructive on-site 100% final products qualification test.
Webster hardness tester can be also used for testing hardness of copper, brass and soft steel.

Model Guide

The indenters of each type of Webster hardness testers are different. The shapes

of three types of indenters are shown as Fig.2.

Main Technical Parameters

Testing Range: 0 - 20 HW (equivalent to 20 - 110 HRE, Model HHW-20)
Resolution: 0.5 HW (5 - 17 HW)
Repeatability: 0.5 HW (5 - 17 HW)
Weight: 0.5 kg

Features
Indenter: Re-engineered with advanced material and new production technology manufactured, higher hardness, long service life, good interchangeability.
Indicator Hand: High strength indicator hand, less likely to be bent by long-term using or mis-operation.
Dial Glass: High strength, high toughness, uneasy to be broken or scratched.
Handle: Forged aluminum alloy handle with fine anodized finishing, high resistance to abrasion and stain.
Hardness Blocks: Tested by standard rockwell hardness tester, the hardness block are attached with test report.
Stability: Stable full scale point, stable calibration point, indicator never glides.
Conversion: Results can be converted to Vickers, Rockwell and Brinell.

Application of Wechsler hardness tester

Webster hardness tester uses two different shapes of pressure needle, two different test forces, and their combination to form three different models of instrument, respectively for aluminum alloy, soft copper, hard copper, ultra hard aluminum alloy and soft steel. The Wechsler hardness tester is suitable for testing materials with two parallel surfaces, such as tubes, plates and profiles, up to 13mm in thickness.

The webster hardness tester is very suitable for testing batches of products on the production site. Although its sensitivity is not high, it has been able to meet the requirements as a production control and conformity determination instrument. It is for this reason that vickers hardness tester has been widely used in the aluminum processing industry.

Webster hardness tester on the market is mainly HHW-20 series aluminum alloy Wechsler hardness tester, as well as used to detect copper alloy Wechsler hardness tester

Performance testing

1. Determine whether the aluminum profile has heat treatment, check the heat treatment effect, and determine whether the mechanical properties of aluminum profile is qualified.

2. Determine whether the aluminum profile is processed with inappropriate alloy and determine whether the aluminum profile alloy composition is qualified.

3. Measure the long and heavy workpiece or assembly which is not easy to send to the laboratory.

4. Used for aluminum production inspection, acceptance inspection and quality supervision and inspection.

5. The reading is convenient and can be easily converted into other hardness values. The measuring range is mainly used for measuring aluminum profiles and aluminum alloy materials, but also can measure copper alloy materials. Its measurement range is equivalent to: aluminum profile :24~110HRE copper alloy :60~90HRF

6. Can measure a variety of aluminum profiles.

7. The operation is simple and the operation skill has no influence on the reading.

Models and Application
HHW-20: the most popular model, used to test normal aluminum profiles.
HHW-20A: used to test aluminum profiles with thickness within 13 mm.
HHW-20B: used to test aluminum tubings with inner diameter over 6 mm.
HHW-B75: used to test brass tubings and brass sheets.

HHW-BB75: used to test copper tubings and copper sheets.
HHW -B92: used to test soft stainless steel sheets, cold-rolled steel, etc.

Operating Method

Put the specimen between the anvil and the indenter and press down the handle until the bottom is felt. At the time the dial indicator will point at a reading which is the hardness value obtained. Excessive pressure beyond this limit will not damage the tester, but it is unnecessary. Hold tight the handle when reading the value. Any torsion or movement will make the reading incorrect during the test.

Standard Package
1 Tester

1 Standard hardness block (attached with measurement and inspection report)

1 Spare indenter

1 Wrench

1 Small screwdriver

1 Instruction manual

1 Carrying case

Optional Accessories

Spare indenter

Standard hardness block

Spare dial glass