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GB/T 94.3-2008Specification for spring washers - Curved and wave spring washers (English PDF)

弹性垫圈技术条件 鞍形、波形弹性垫圈

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 25, 2008

Implementation date

February 1, 2009

Scope

GB/T 94.3-2008 is the English-translated version of 弹性垫圈技术条件 鞍形、波形弹性垫圈.

GB/T 94.3-2008 gives the technical conditions for curved and wave spring washers, Part 3 of the Chinese GB/T 94 series.

Clause 3 fixes the materials and heat treatment - spring steel 65Mn to GB/T 1222, quenched and tempered to 40 HRC to 50 HRC or 392 HV to 513 HV, and hard copper alloy QSn6.5-0.1 to GB/T 3114 at not less than 85 HRB - the surface treatments of oxidising, zinc plating with passivation and non-electrolytic zinc flake coating, and two performance checks: washers of size 4 mm and above take the elasticity test, after which the free height H must be not less than the product standard's Hmin, and electroplated washers must not break in the hydrogen embrittlement test.

It replaces GB/T 94.3-1987, was issued on 25 August 2008 and has applied since 1 February 2009.

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Document preview — GB/T 94.3-2008

National Standard of the People's Republic of China

ICS
21.060.30
Classification
J 13
Replacing
GB/T 94.3-1987

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Technical requirements

Foreword

This section is one of the "spring washers" series of standards GB/T 94. The series includes.

--- GB/T 94.1-2008 spring washers spring washers;

--- GB/T 94.2-1987 toothed spring washers, serrated lock washer;

--- GB/T 94.3-2008 saddle-shaped spring washers, wave spring washers. This section is GB/T Part 3 94.

This Part replaces GB/T 94.3-1987 "saddle-shaped spring washers, wave spring washers." Section compared with the GB/T 94.3-1987 The main changes are as follows.

--- Modify reference standard (Chapter 2);

--- Increase spring steel washers Vickers hardness and the hardness of the copper alloy washers (see table 1);

--- Increasing spring steel washer "sheet non-electrolytic zinc coating" surface treatment (Table 1).

1 Scope

This section provides the saddle and wave spring washers technical conditions.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 90.1 fasteners acceptance inspection (GB/T 90.1-2002, ISO 3269:2000, IDT)

GB/T 90.2 Fasteners marking and packaging

GB/T 1222 spring steel

GB/T 3114 copper and copper alloy flat wire

GB/T 230.1 Metallic Rockwell hardness test - Part 1: Test methods

GB/T 4340.1 Vickers hardness test - Part 1: Test methods

GB/T 5267.1 fasteners plating layer (GB/T 5267.1-2002, ISO 4042:1999, IDT)

GB/T 5267.2 fasteners non-electrolytic zinc flake coating (GB/T 5267.2-2002, ISO 10683:2000, IDT)

3 Technical requirements

3.1 Material, heat treatment and surface treatment

Gasket material, heat treatment and surface treatment specified in Table 1.

Note 1. The washer after plating must be driving hydrogen treatment immediately.

3.2 Performance

3.2.1 Flexible

Size equal to or greater than 4mm washer should be 4.1 elasticity test. After the test gasket free height (H) shall be not less than the corresponding Product standards for Hmin.

3.2.2 Anti-hydrogen embrittlement

4.2 Electroplating shall washer anti hydrogen embrittlement test, the test can not be broken.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Similar standards

Editions of GB/T 94.3

EditionTitleRevisionStatus
GB/T 94.3-2008Specification for spring washers - Curved and wave spring washerscurrent editionCurrent
GB/T 94.3-1987Specification for spring washers - Curved and wave spring washersprevious editionSuperseded

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