ISO 26910-1:2023 ばね — ショットピーニング — Part 1: 一般的な手順 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 227, Springs.

This second edition cancels and replaces the first edition (ISO 26910-1:2009), of which it constitutes a minor revision. It also incorporates the Amendment ISO 26910-1:2009/Amd. 1:2017.

The changes compared to the previous edition are as follows:

• the Normative reference has been updated to ISO 80000-1;
• "or less" has been deleted from the sentence of 3.5 saturation time;
• "and size" has been added to the sentence of a) of 4.3 Conditions of shot peening;
• "Type A" has been added to the last sentence of 6.2 Selection of the class of Almen strip;
• the statuses of Annexes A and B have been changed to informative.

A list of all parts in the ISO 26910 series can be found on the ISO website.

Introduction

Shot peening is widely applied to various mechanical and structural elements in a wide range of industrial fields, because of its effective improvement in the strength and life properties at moderate costs. It is also used in some cases for other purposes such as to form thin sheet products, to increase wear resistance, or to assist lubrication effect, deburring and so on. It is, however, especially important for spring industries, as it is indispensable for the achievement of the required fatigue strength and to decrease stress corrosion cracking.

The important effects of shot peening are known to be due mainly to the compressive residual stresses introduced near the shot peened surface, and helped sometimes by the work hardening of the surface layers. Various processing methods have been developed and practised together with diverse materials for shot peening.

This document serves to establish smooth technical communication between the spring manufacturers and industry related to shot peening, including peening machine manufacturers, peening media suppliers and shot peening processors, as well as users of those springs in various industrial sectors.

1 Scope

This document specifies general requirements for the shot peening process applied to springs in order to improve their resistance to fatigue and stress corrosion cracking, mainly by introducing compressive residual stresses into their surface layers.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography