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GB/T 27938-2011: Plain bearings -- Thrust washers -- Terms, appearance of damage and cause of failure
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GB/T 27938-2011	English	399	Add to Cart	3 days [Need to translate]	Plain bearings -- Thrust washers -- Terms, appearance of damage and cause of failure

GB/T 27938-2011: Plain bearings -- Thrust washers -- Terms, appearance of damage and cause of failure

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Plain bearings. Thrust washers. Terms, appearance of damage and cause of failure ICS 21.100.10 J12 National Standards of People's Republic of China Bearing thrust washers Failure term damage, the appearance characteristics and causes Terms, appearanceofdamageandcauseoffailure Issued on. 2011-12-30 2012-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Machinery Industry Federation. This standard sliding bearing by the National Standardization Technical Committee (SAC/TC236) centralized. This standard is drafted by. Lin'an Oriental Bearing Co., Ltd., the machine Productivity Promotion Center. Participated in the drafting of this standard. Shanghai Jiaotong University.

Introduction

The standard axial loads, held in position by a sliding bearing thrust washer and appearance of damage occurring in the course of change Characteristics and reasons for the failure to define, describe and classify the various forms of help to analyze the occurrence of failure and damage. The standards set forth in the "thrust washer damage," including a change in the appearance and thrust washers damage occurs during operation, regardless of their Whether sliding bearing performance adversely affected. This standard considers only those forms of damage to the surface appearance of a clear, well-established and can be attributed to the type of damage to a specific cause, It described sliding bearing thrust washer changes and damage characteristics of the various forms of damage with photographs of explanation, the most common cause of failure. Bearing thrust washers Failure term damage, the appearance characteristics and causes

1 Scope

This standard specifies the terms, definitions and appearance characteristics and causes of bearing failure damaged thrust washers. Failure Analysis Bearing thrust washers This standard applies.

2 Normative references

The following documents for the use of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2889.1 bearing terms, definitions and classification - Part 1. Design, bearing materials and their properties ISO 4378-2 Plain bearings - Terms, definitions and classification - Part 2. Friction and wear (Plainbearings-Terms, definitions, classificationandsymbols-Part 2. Frictionandwear)

3 Terms and Definitions

GB/T 2889.1, ISO 4378-2 and as defined in the following terms and definitions apply to this document. 3.1 Thrust washer thrustwasher Start-stop push, positioning action washer. 3.2 Thrust washers failure failureofthrustwasher Thrust thrust washer has lost prescribed positioning action. 3.3 Fatigue spalling fatiguespaling Alloy materials due to fatigue stress exceeds the allowable stress caused by detachment. 3.4 Alloy off lossofbondbetweentheliningandthesteelbacking Since the alloy layer and alloy steel Cushion partial detachment due to poor binding. 3.5 Wear wear Thrust washers work surface alloy material is thrust surface of the shaft or thrust collar worn surface of the process and results. 3.6 Normal wear normalwear Thrust washer before failure, micro-wear process and results of the work surface. 3.7 Adaptability wear adaptivewear The initial run-in phase, the working surface of the thrust washer compliance occurred adapt to changes in the micro-wear. ...