GB/T 33523.2-2026Geometrical product specifications (GPS) - Surface texture: Areal - Part 2: Terms, definitions and surface texture parameters (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is Part 2 of GB/T 33523 "Geometric Specifications for Products (GPS) - Surface Texture. Zone Method".

The following sections have been released.

---Part 1: Representation of Surface Structures;

---Part 2: Terminology, Definitions, and Surface Structure Parameters;

---Part 3: Standard Operation Set;

---Part 6: Classification of Surface Structure Measurement Methods;

---Part 70: Physical Measurement Standards;

---Part 71: Software Measurement Standards;

---Part 72: XML File Format x3p;

---Part 73: Terms and definitions for physical standard surface defects;

---Part 601: Nominal characteristics of contact (stylus) instruments;

---Part 602: Nominal characteristics of non-contact (confocal chromatic aberration probe) instruments;

---Part 603: Nominal characteristics of non-contact (phase-shifting interferometry) instruments;

---Part 604: Nominal characteristics of non-contact (coherent scanning interferometry) instruments;

---Part 605: Nominal characteristics of non-contact (point autofocus probe) instruments;

---Part 606: Nominal characteristics of non-contact (zoom) instruments;

---Part 700: Calibration, Adjustment and Validation of Area Topography Instruments;

---Part 701: Calibration and measurement standards for contact (stylus) instruments.

This document replaces GB/T 33523.2-2017 "Geometric Specifications for Products (GPS) - Surface Structure Zone Method - Part 2: Techniques".

The terminology, definitions, and surface structure parameters, compared with GB/T 33523.2-2017, have undergone structural adjustments and editorial changes, with the main technical changes being...

The following is a simplified version.

---The term and definition of "surface structure" have been added (see 3.1.2);

---Change "Original Surface" to "Base Surface" (see 3.1.5, 3.1.3 in the 2017 version);

---Change "coordinate value" to "vertical coordinate value" (see 3.2.5, 3.2.6 in the 2017 version);

---The term and definition of "motif" have been added (see 3.3.4);

---The terms and definitions of "first segmentation property," "second segmentation property," and "third segmentation property" have been removed (see section 3.3.6.2 of the 2017 edition).

3.3.6.4);

---Change "high resolution" to "high discrimination" (see 3.3.9, 3.3.12 in the 2017 version);

---Change "peak mean square deviation" to "plateau mean square deviation" (see 4.5.5.2, 4.4.4.9 in the 2017 version);

Chapter 4 of the edition);

---See Appendix E for other technical changes.

This document is equivalent to ISO 25178-2:2021 "Geometrical specifications for products (GPS) - Surface texture. Zone method - Part 2: Techniques".

Terminology, definition, and surface structure parameters.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Product Geometric Specifications (SAC/TC240).

Introduction

With the implementation of the national product quality improvement plan, unified standards or principles are needed for the use of product design, manufacturing, measurement, and inspection.

The demand is becoming increasingly urgent. The existing surface structure representation methods and related standards in product geometric specifications are no longer sufficient to meet the needs of product manufacturing.

Surface quality control requirements during the process.

GB/T 33523 "Product Geometric Specification (GPS) Surface Structure. Zone Method" is based on the new generation GPS product geometric specification system.

By employing digital measurement technology, software analysis technology, and metrological evaluation methods, a novel system for the measurement and analysis of three-dimensional surface structures is constructed.

Recommended national standard. GB/T 33523, based on proposing surface structure representation methods, surface structure parameters, and specification operation sets, analyzes the surface structure...

While introducing measuring instruments, the book also highlights a variety of non-contact measuring instruments that are valuable in high-precision measurement applications but lack standard support.

GB/T 33523 also specifies standards for physical measurement and software measurement, and provides metrological characteristics for software documentation standards and surface structure measurement.

Sexuality. GB/T 33523 represents a leap from two-dimensional contour measurement to three-dimensional surface structure measurement, providing a geometric specification system for GPS products.

It provides support for metrological testing.

In this document, parameters used in statements are represented by lowercase suffixes (e.g., Sq, Vmp), while those used in formulas are represented by subscript symbols.

Formal representations (such as Sq, Vmp) are used to avoid confusion with compound letters in the product of variables in formulas. These lowercase parameters are also used in product...

Documents, maps, and data manuals.

GB/T 33523 is proposed to consist of 17 parts.

---Part 1: Representation of Surface Texture. The purpose is to specify the representation of surface texture in product technical documents (e.g., drawings, specifications, contracts, and reports).

Rules for representing the surface structure of a region using graphic symbols.

---Part 2: Terminology, Definitions, and Surface Structure Parameters. The purpose is to define the terminology, definitions, and parameters for evaluating surface structure using the zone method.

parameter.

---Part 3: Standard Operating Procedures. The purpose is to define a complete set of procedures applicable to the zone method for evaluating surface structure (scale-limited surfaces).

Fan operation set.

---Part 6: Classification of Surface Structure Measurement Methods. The purpose is to define a classification system primarily used for surface structure measurement methods.

Three types of methods are defined, the relationship between the three types of methods is described, and a brief explanation of the specific methods is given.

---Part 70: Physical Measurement Standards. The purpose is to specify the physical measurement standards used for the periodic verification and adjustment of instruments for measuring surface structure using the zone method.

Characteristics of physical measurement standards.

---Part 71: Software Measurement Standards. The purpose is to specify the S1 and S2 software measurement standards used for the calibration of measuring instrument software.

---Part 72: XML File Format x3p. The purpose is to define XML files used for storing and exchanging topographic and contour data.

Format. x3p.

---Part 73: Terms and definitions for physical standard surface defects. The purpose is to define the terms and definitions in ISO 5436-1 and ISO 25178.70.

The definitions of geometric defect categories that may appear on the surface of physical measuring tools and calibration blocks, and the definitions of methods for handling these defects.

Legal terminology.

---Part 600: Metrological Characteristics of Regional Topography Measurement Methods. The purpose is to specify the regional measurement methods used for surface topography measurement.

The metrological characteristics of the instrument.

---Part 601: Nominal Characteristics of Contact (Stimulus) Instruments. The purpose is to specify the nominal characteristics of contact (stimulus) instruments using the surface texture area method.

The nominal characteristics of the device.

---Part 602: Nominal characteristics of non-contact (confocal chromatic aberration probe) instruments. The purpose is to specify the use of instruments based on the white light axis.

Design and metrological characteristics of a non-contact instrument for measuring surface structures using a confocal colorimetric probe with dispersion characteristics.

---Part 603: Nominal Characteristics of Non-Contact (Phase-Shifting Interferometry) Instruments. The purpose is to define the profile of phase-shifting interferometry (PSI).

Metrological characteristics of the microscope for measuring surface structure in the region.

---Part 604: Nominal characteristics of non-contact (coherent scanning interferometry) instruments. The purpose is to specify the characteristics of instruments used for three-dimensional mapping of surface height.

Metrological characteristics of a coherent scanning interferometry (CSI) measurement system.

---Part 605: Nominal characteristics of non-contact (point autofocus probe) instruments. The purpose is to specify the nominal characteristics of instruments using point autofocus probes.

Metrological characteristics of non-contact instruments for measuring surface structures using needles.

---Part 606: Nominal Characteristics of Non-Contact (Zoom) Instruments. The purpose is to specify the measurement characteristics of surfaces using zoom (FV) sensors.

Design and metrological characteristics of non-contact instruments.

General procedures for common metrological characteristics of area topography measuring instruments as described in ISO 25178-600.

---Part 701: Calibration and Measurement Standards for Contact (Stimulus) Instruments. The purpose is to specify the standards for area-based surface structure contact (stimulus) instruments.

The characteristics of needle-type instruments used as physical measuring tools for measurement standards, methods for evaluating residual errors, and verification of calibration, acceptance, and periodic inspection.

Test method.

Product Geometry Specification (GPS) Surface Structure.

Regional Law Part 2: Terms, Definitions and Surface structure parameters

1 Scope

This document defines the terminology, definitions, and parameters for evaluating surface structure using the zone method.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

ISO 16610-1:2015 Product Geometry Specification (GPS) - Filtering - Part 1: Overview and Basic Concepts Note. GB/T 26958.1-2025 Product Geometry Technical Specification (GPS) - Filtering - Part 1: Overview and Basic Concepts (ISO 16610-1:2015) MOD) ISO 17450-1:2011 Product Geometry Specification (GPS) - General Concepts - Part 1: Geometry Specification and Validation Models Note. GB/T 24637.1-2020 Product Geometric Specification (GPS) General Concepts Part 1: Models for Geometric Specification and Verification (ISO 17450-1.

2011, MOD)

The terms and definitions defined in ISO 16610-1:2015 and ISO 17450-1:2011, as well as the following terms and definitions, apply to this document.