Surface Roughness Tester แผ่นทดสอบความเรียบ

Model R2006 (PTE) Paint Test Equipment

 ได้รับการรับรองตามมาตรฐานสากล Compliant to ISO 8503-1, ISO 8503-2 and ASTM D4417.

 ดาวน์โหลด

แผ่นทดสอบความเรียบผิว รุ่น R2006 คุณภาพจาก ประเทศอังกฤษ Paint Test Equipment (PTE) ใช้สำหรับทดสอบความเรียบผิวของชิ้นงาน เพื่อตรวจสอบว่าชิ้นงาม นั้นๆ ตรงตรมวัตถุประสงค์หรือไม่ มีผิวขรุขระ ผิวหยาบ หรือไม่?

Surface Roughness แผ่นทดสอบความเรียบผิว รุ่น  R2006

แผ่นทดสอบความเรียบผิว	โมเดล R2006
มาพร้อมชุดจัดเก็บอุปกรณ์	คุณภาพจากประเทศอังกฤษ

Product Description
Surface Roughness Comparator for grit-blast and shot-blast surface profile comparison measurement of blast-cleaned steel.
The Surface Roughness Comparator is supplied in a protective Wallet.

Compliant to ISO 8503-1, ISO 8503-2 and ASTM D4417.

Technical Specification
When steel has been blast-cleaned, the surface consists of random irregularities with peaks and valleys that are not easily characterised. Because of this random nature, it is recommended that the profile should be identified as either angular (where grit abrasives have been used) or dimpled (where shot abrasives have been used) and that they should be graded as fine, medium or coarse using the four segments on the Comparator.
Fine-grade profiles equal to segment 1 and up to but excluding segment 2.  Medium-grade profiles equal to segment 2 and up to but excluding segment 3. Coarse-grade profiles equal to segment 3 and up to but excluding segment 4.

Information  
ISO 8503-1: Preparation of steel substrates before application of paints and related products. Surface roughness characteristics of blast-cleaned steel substrates.  Part 1: Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfaces.

ISO 8503-2: Preparation of steel substrates before application of paints and related products. Surface roughness characteristics of blast-cleaned steel substrates.  Part 2: Method for the grading of surface profile of abrasive blast cleaned steel. Comparator procedure.

A precision nickel Comparator plate for grit and shot-blast surface roughness comparison measurement.

When steel has been blast-cleaned, the surface consists of random irregularities with peaks and valleys that are not easily characterised.  Because of this random nature, experts have recommended that the profile should be identified as either  angular (where grit abrasives have been used) or dimpled (where shot abrasives have been used) and that they should be graded as fine, medium or coarse with each grade being defined by limits specified in ISO 8503.

The Roughness Comparator is supplied in a protective Wallet.

A X5 Illuminated Magnifier for viewing the Comparator is available has an optional extra.

The 5X Illuminated Magnifier is used for viewing the Roughness Comparator.

Roughness Comparator Specifications

Evaluation
Remove all loose dirt and debris from the test surface.

Select the appropriate surface profile reference Comparator. The Grit Comparator is for comparing profiles after blast-cleaning with grit abrasives, and the Shot Comparator is for comparing profiles after blast-cleaning with shot abrasives.

• Place the selected Comparator against an area of the test surface.  Compare in turn the test surface with the four segments of the Comparator, using the Illuminated Magnifier if necessary.  If the Illuminated Magnifier is used, place it so that the  test surface is viewed simultaneously with a segment of the Comparator.

• Assess the profiles on the Comparator that are nearest to the profile of the test surface and determine its grade from the following:

• Fine-grade profiles equal to segment 1 and up to but excluding segment 2
• Medium-grade profiles equal to segment 2 and up to but excluding segment 3.
• Coarse-grade profiles equal to segment 3 and up to but excluding segment 4.
• If any profile is assessed as below the lower limit for the fine grading, assess this grading as finer than fine.
• If any profile is assessed as greater than the upper limit for the coarse grading, assess this grading as coarser than coarse.
• If visual assessment proves difficult, tactile assessment may provide a useful guide.  It is possible to assess the closest grading by passing the back of a fingernail or a wooden stylus held between thumb and forefinger over the test surface and segments on the Comparator alternately.

Roughness Comparator Operation

Care

• Never place the Comparator face down on a rough surface. Keep the Comparator in the protective Wallet provided when not in use.

• If the Comparator becomes tarnished, wash with a Dilute detergent solution and soft brush and dry with soft tissue.

Practical Advice

• The Roughness Comparator method is applicable to steel surfaces that have been blast-cleaned to grades Sa 2½ and Sa 3 when the surface under test shows an overall blast-cleaned appearance.

• It is applicable to surfaces that have been cleaned with either metallic or non-metallic abrasives

• When a mixture of shot and grit abrasives are used to blast-clean a substrate, the Grit Surface Roughness Comparator should be used.

About Us

• Paint Test Equipment is a global leader in the manufacture of specialist test equipment specifically for the industrial painting and coating industries for the protection of steel assets from corrosion, mainly in the oil, renewables and steel construction sectors.  We have over 30 years experience and extensive knowledge in delivering practical solutions in supporting our customers with world class products for corrosion prevention.

• Prevention of corrosion on steel is essential to extend the asset lifetime, optimise performance and minimise downtime for expensive maintenance work.  Using Paint Test Equipment products ensures that industrial coatings are applied to the highest achievable quality standards of ISO compliance.

• We supply small, medium and multinational companies with the full range of technologies and innovations in our unrivalled portfolio of products for our customers to grow their business and enhance profits through cost effective corrosion management equipment.

• Paint Test Equipment is committed to providing proactive and innovative solutions to meet customer requirements for the highest quality, user friendly inspection equipment.  Paint Test Equipment is the partner of choice.