HG/T 2479-1993 Technical requirements for wave springs for mechanical seals HG/T2479-1993 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2479-93
Technical conditions for wave springs for mechanical seals
Published on June 30, 1993
Ministry of Chemical Industry of the People's Republic of China
Implementation on January 1, 1994
Chemical Industry Standard of the People's Republic of China
Technical conditions for wave springs for mechanical seals
Subject content and scope of application
HG/T2479—93
This standard specifies the technical requirements, test methods and inspection rules for wave springs for mechanical seals. This standard applies to the manufacture and product acceptance of cold-worked hardened wave springs for mechanical seals with a rotating shaft diameter of @10~120mm (hereinafter referred to as wave springs).
2 Reference standards
GB2828 Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) GB4239 Stainless steel cold-rolled steel strip
3 Product classification
The classification and code of wave springs shall comply with the provisions of Table 1. The typical working diagram of the product is shown in Appendix A (supplement). Table
Single-piece two-wave spring
Single-piece three-wave spring
Double-piece two-wave spring
Double-piece three-wave spring
4 Technical requirements
4.1 Wave spring materials can be selected from the following materials: Figure
1Cr17Ni7;1Cr17Ni8:1Cr18Ni90Cr19Ni9;0Cr17Ni12Mo2 generation
4.2 The chemical composition of the material and the allowable deviation of the steel strip thickness shall comply with the provisions of Table 5 and Table 2 in GB4239. 4.3 The surface of the wave spring is not allowed to have cracks, burrs, scratches exceeding 10% of the plate thickness, and other defects that affect the use. Approved by the Ministry of Chemical Industry of the People's Republic of China on June 30, 1993 and implemented on January 1, 1994
HG/T2479-93
4.4 The spot welds of double-piece corrugated steel must be firmly welded. Each spot weld can only have one weld point. The weld points should be filed and smoothed without burn-through.
4.5 The welding points of double-piece wave springs shall meet the following requirements: 4.5.1 When the width of the wave plate is not greater than 6mm, the diameter of the welding point is 2/5 of the width. 4.5.2 When the width of the wave plate is greater than 6mm, the welding point is a long strip distributed along the radial direction, with a length of 1/2 of the width of the wave plate and a width of 1/4 of the width of the wave plate.
*4.5.3 When welding double-piece wave springs, the wave crests and troughs of the upper and lower pieces shall be aligned, the angular misalignment in the circumferential direction shall not exceed 5°, and the radial misalignment shall not exceed 0.15mm.
4.6 The inner and outer diameter size deviation of the wave spring shall comply with the provisions of Table 2, Table 2
Inner and outer diameter deviation
Note: The middle diameter is equal to half of the sum of the inner diameter and the outer diameter, >25~40
>40~55
4.7 The free height size deviation of the wave spring shall comply with the provisions of Table 3 and Table 4. Table 3 Free height dimension deviation of double-piece wave spring Free height
Free height
Wave spring must be stress-relieved. >9~11
>55~70
>11~16
Single-piece wave spring Free height dimension deviation
Waveform residual deformation should not exceed 0.5mm, but the free height should comply with the provisions of 4.7. The height difference of each wave of the same wave spring shall not exceed the provisions of Table 5 and Table 6. Table 5 Double-piece wave spring Each wave height difference
Free height
Free height
Single-piece wave spring Each wave height difference
Waveform working load allowable deviation is 10% of the load. For the dimensions and working load of double-piece corrugated sheet, see Table 7.4.12
>11~16
>70~120
>16~24
Marking example
HG/T2479—93
Table 7 Dimensions and working load D of double-piece corrugated sheet for mechanical seal
Marking example
Double-piece, two waves, nominal diameter 10
Code MBS2-10
MBS2-10
MBS2-12
MBS2-1 4
MBS2-16
MBS2-18
MBS2-20
MBS2-22
MBS2-24
MBS2-25
MBS2-28
MBS2-30
MBS2-32
MBS2-33| |tt||MBS2-35
MBS3-38
MBS3-40
MBS3-43
MBS3 -45
Double piece, three waves, nominal diameter 40
Code name is MBS3-40
MBS3-48
MBS3-50
MBS3-53
MBS3-55wwW.bzxz.Net
MBS3-58
MBS3-60
MBS3-63
MBS3-65
MBS3-68
MBS3-70
MBS3-75
MBS3-80
MBS3-85
MBS3-90
MBS3-95
MBS3-100
MBS3-105
MBS3-110
MBS3-120
HG/T2479—93
Continued Table 7
4.13 Special requirements for wave springs should be agreed upon by the user and the manufacturer 5 Test method
5.1 The free height of the wave spring should be measured at the highest point, which can be measured by a spring testing machine or a general measuring tool. H
5.2 Inspection of residual deformation of the wave spring
Compress the finished wave spring five times to 40% of the free height, and then measure the free height after compression. The difference between the free height after compression and the height before compression is not more than 0.5mm, which is acceptable.
The inspection equipment can be a spring testing machine or other devices. 5.3 The wave spring load should be tested with the corresponding spring test machine. 5.4 The outer diameter and inner diameter of the wave spring can be measured with a ring gauge, a plug gauge or a universal measuring tool. 5.5 The surface quality of the wave spring can be checked with visual inspection or a 5x magnifying glass. 4
6 Inspection rules
HG/T2479-93
6.1 The wave spring should be inspected by the inspection department before leaving the factory. The inspection items shall be carried out in accordance with 4.1 to 4.12 of this standard. 6.2 The inspection of the load and size of the wave spring shall be carried out after the residual deformation inspection. 6.3 The wave spring shall be inspected by sampling. The sampling plan shall be the normal inspection sampling plan in GB2828. =11, AQL=4.06.4 Products that are not accepted according to Article 6.3 may be re-sorted or repaired by the manufacturer before being submitted for acceptance. Packaging, transportation, storage, and marking
The waveform should be cleaned before packaging, and those that are prone to rust should be treated with rust prevention. 7.2
There should be a packing list and certificate of conformity in the packaging box
There should be markings on the packaging box, including: a.
Manufacturer name;
Product name;
Trademark;
Product model or mark;
Quantity and specifications:
Manufacture date and production batch number.
7.4 The packaging of wave springs should be able to prevent damage and loss during transportation and storage. 1.5 The products should be stored in a ventilated and dry warehouse. Under normal circumstances, they should be guaranteed to be rust-free for 1 year. Technical requirements
1. The spring should be stress-relieved
HG/T2479—93
Appendix
Typical working diagram of wave spring
(supplement)
2.Spring load, free height, inner and outer diameter size deviation shall comply with the provisions of HG/T2479. Additional remarks:
This standard is proposed by China National Chemical Equipment Corporation and is under the jurisdiction of the Chemical Industry Ministry's Chemical Industry Special Seals Standardization Technical Committee. This standard was drafted by Beijing Chemical Machinery Plant and Beijing Institute of Chemical Technology participated in the drafting. The main drafters of this standard are Xu Jinrong, Xu Qi, and Wang Shenglin. Others
People's Republic of China
Chemical Industry Standard
Technical Conditions for Wave Springs for Mechanical Seals
HG/T2479-93
Editor: Editorial Department of Chemical Industry Standards
(Institute of Standardization, Ministry of Chemical Industry)
Postal Code: 100013
Printer: Institute of Standardization, Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16
Number of words on a sheet: 12000
First edition in July 1993
First printing in July 1993
Number of print runs: 1-1:000
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