This standard specifies the structural type, code, technical requirements, test methods and inspection rules of rubber-metal spiral composite springs. This standard applies to compression springs made of rubber and metal spiral springs (hereinafter referred to as composite springs). This standard does not apply to rubber-metal spiral composite springs with special properties. JB/T 8584-1997 Rubber-metal spiral composite springs JB/T8584-1997 Standard download decompression password: www.bzxz.net

JB/T85841997
Appendix A of this standard is the appendix of the standard. Pre
This standard is proposed and managed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. The drafting units of this standard are: Spring Product Quality Supervision and Inspection Center of the Ministry of Machinery Industry, Shenyang Yongxiang Composite Elastic Products Research Institute. The main drafters of this standard are: Zhang Xinlan, Zhao Chengji, Wang Decheng, Cui Junshan, Zhao Chengqing. 617
Standards of the Machinery Industry of the People's Republic of China
Rubber-metal spiral composite spring
JB/T 8584
This standard specifies the structural type, code, technical requirements, test methods and inspection rules of rubber-metal spiral composite springs. This standard applies to compression springs made of rubber and metal spiral springs (hereinafter referred to as composite springs). This standard does not apply to rubber-metal spiral composite springs with special properties. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T52892 Determination of tensile properties of vulcanized rubber and thermoplastic rubber GB531-92 Test method for hardness of vulcanized rubber GB1239.2--89 Technical conditions for cold-rolled cylindrical helical compression springs GB 1239. 4-89
GB 1239. 5—87
Technical conditions for hot-rolled cylindrical helical springs
Sampling inspection of cylindrical helical springs
GB/T1681—91 Determination of rebound resilience of vulcanized rubber GB9899—88 Rubber materials for shockproof rubber products GB/T 12831--91
Test method for artificial climate (rat air) aging of vulcanized rubber GB/T13936—92 Determination method for tensile shear strength of bond between vulcanized rubber and metal GJB 1259-91
Specification for rubber-mounted road wheels for tracked vehicles
HG/T2198—91 General requirements for physical test methods for vulcanized rubber 3 Structural types and codes
The codes, names, structural types and diagrams of composite springs are shown in Table 1. Table 1
Structural type
Jinfeng coil spring is wrapped by smooth and simple rubber inside and outside
Approved by the Ministry of Machinery Industry of the People's Republic of China on 1997-06-20618
Implemented on 1998-01-01
External thread and internal straight type
Internal and external spiral type
External straight internal spiral type
Straight cylinder type with iron plate
External thread and internal straight type with iron plate
Internal and external spiral type with iron plate
External straight internal spiral type with iron plate
JB/T 8584- --1997
Table 1 (end)
Structural type
The outer surface of the metal coil spring is wrapped with spiral rubber, and the inner surface of the metal coil spring is wrapped with smooth cylindrical rubber
The inner and outer surfaces of the metal coil spring are wrapped with spiral rubber
The inner surface of the metal coil spring is wrapped with spiral rubber, and the surface of the metal coil spring is wrapped with smooth cylindrical rubber
The composite spring with code FA has iron plates vulcanized at both ends or one end
The composite spring with code FB has iron plates vulcanized at both ends or one end
The composite spring with code FC has iron plates vulcanized at both ends or one end
The composite spring with code FD has iron plates vulcanized at both ends or one end
4 Terms, symbols, units and definitions
JB/T 8584--1997
Terms, symbols, units and definitions of composite springs are shown in Table 2. Technical
Rubber-metal spiral
Composite spring
Free height
Static deformation
(Static deformation)
Static load
(Static load)
Working load
Static stiffness
(Static stiffness)
Spring characteristics
Verticality
Permanent deformation
Adhesion strength
5 Technical requirements
Definition or description
A spring made of a layer of rubber material wrapped around a metal spiral spring. The outer diameter of the composite spring
The inner diameter of the composite spring Diameter
Height of composite spring without load
Relative displacement of composite spring under axial static forceForce borne by composite spring under axial static forceLoad of composite spring when unit deformation is produced under axial static forceRelationship between load and deformation of composite springVerticality of outer circle generatrix to two end faces of composite spring under no loadPart of free height change that cannot be restored after composite spring is unloadedStrength of adhesion between rubber and metal
When cold-rolled cylindrical helical compression spring is used in the product, metal helical spring shall comply with the provisions of Chapter 4 of GB1239.2-89. 5.2When hot-rolled cylindrical helical spring is used in the product, metal helical spring shall comply with the provisions of Chapter 4 of GB1239.4-89. 5.3The rubber material performance of the product shall comply with the provisions of Chapter 5 of GB9899-88. 5.4 Dimensions and Limit Deviations
5.4.1 The limit deviation of the outer diameter (or inner diameter) of the composite spring is ±3.5%D, (or D,). 5.4.2 The limit deviation of the free height of the composite spring is ±3.5%H. . 5.5 Permanent Deformation
The test shall be carried out in accordance with the provisions of Article 6.5. The permanent deformation shall not exceed 2% of the free height. 5.6 Static Characteristics of Composite Springs
5.6.1 The limit deviations of the static load and static stiffness of the composite spring are divided into three levels: 1, 2, and 3. The limit deviation values ​​are specified in Table 3. 5.6.2 The deformation of the static load and static stiffness shall be determined within a range of less than 30%H. . 5.6.3 Only one of the static load and static stiffness shall be tested. 5.6.4 Composite springs shall be grouped by load or stiffness according to user requirements when supplied. 5.7 Verticality
The verticality tolerance of composite springs is 5%H. . 5.8 Adhesion strength
The adhesion strength between metal spring and rubber shall not be less than 4.0 MPa. 620
Grade accuracy
Static load P
Limit deviation
Static stiffness P
Limit deviation
JB/T8584—1997
±10%PwwW.bzxz.Net
±10%Pr
±15%p
5.9 Appearance
The appearance of the composite spring shall not have defects such as scratches and bubbles that affect the performance. The specific requirements shall be in accordance with 3.9 of GJB1259—91. 5.10 The characteristics of the composite spring shall meet the requirements of the technical drawings. 5.11 In case of special requirements, it shall be agreed upon by both parties. 6 Test methods
6.1 When the product uses cold-rolled cylindrical helical compression springs, the test methods are shown in Chapter 5 of GB1239.2-89. 6.2 When the product uses hot-rolled cylindrical helical springs, the test methods are shown in Chapter 5 of GB1239.4-89. 6.3 The test items of rubber materials used in the product can be selected as follows according to the user's requirements. 6.3.1 The tear strength test shall be carried out in accordance with GB/T13936. 6.3.2
The elongation test shall be carried out in accordance with GB/T528. The rubber permanent deformation test shall be carried out in accordance with GB/T528. 6.3.3
6.3.4 The hardness test shall be carried out in accordance with GB531. 6.3.5
The aging test shall be carried out in accordance with GB/T12831. 6.3.6
The impact test shall be carried out in accordance with GB/T1681. 6.3.7 General requirements for physical test methods for vulcanized rubber shall be in accordance with HG/T2198. 6.4 Dimensions
Diameter and free height shall be measured with general or special measuring tools. 6.5 Permanent deformation
Compress the composite spring product three times and measure the change in free height after the second and third compressions. The test shall be carried out in the following order; a) compress the spring to 30%H. deformation for 3min; b) place it without load for 3s;
c) compress it to 30%H. deformation for 30s; d) place it without load for 30s.
Perform three times in a row.
6.6 Static characteristics of composite springs
The static load, static stiffness and characteristic curve of the composite spring shall be measured on special equipment and tested after being compressed three times at 30%H. deformation. The test displacement range shall be within 30%H. 6.7 Verticality
Measured with a flat plate and a wide-seat angle ruler. After the composite spring rotates one circle on the wide seat angle ruler, check the other end and measure the maximum verticality error of 4 (as shown in Figure 1).
6.8 Adhesion strength
Use vulcanized specimens and the test method is carried out in accordance with the provisions of GB/T13936. 6.9·Appearance
Inspect by visual inspection or with a 5x magnifying glass.
7 Inspection rules
JB/T 8584-1997
7.1 Inspection categories
Inspection categories are internal product quality control, user acceptance, new product finalization identification, product certification, and product quality supervision spot check.
Defects of composite springs are divided into the following categories according to their severity: Class A defects (key items)
Class B defects (main items)
Class C defects (general items)
Defect items are shown in Table 4.
Class A defects
Adhesion strength
Note: Class A defects are assessed when the user requires them. Class B defects
Static stiffness (static load)
Permanent deformation
Verticality
7.3 The sampling plan and product quality level shall comply with the relevant provisions of GB1239.5. 8 Marking, packaging, transportation, storage
8.1 The composite spring should be clean before packaging.
8.2 The composite spring can be transported in simple packaging or containers, and the packaging should be reliable. 8.3 The packaging box should be accompanied by a product certificate, which includes the following contents: a) Manufacturer name;
b) Product name, model and part number;
c) Manufacturing date or production batch number;
d) Signature and seal of the technical inspection department.
8.4 The external marking of the packaging box:
C-type defects
Free height
a) Manufacturer name, address, and trademark;
b) Product name, model, and part number;
c) Number of pieces;
d) Gross weight;
e) Date of manufacture;
f) Receiving unit and address.
JB/T8584
According to the needs and the agreement between the supply and demand parties, the code and other marks can be printed on the end surface or the upper side. 8.5
Special requirements for marking, packaging, transportation, storage, etc. shall be agreed upon by the supply and demand parties. 8.6
A1 Representation method of composite spring
A2 Schematic diagram of composite spring
A3 Dimension series of composite spring
JB/T8584--1997
Appendix A
(Appendix to the standard)
Dimension series of composite spring
The dimension series listed in Table A1 are only some series. Manufacturers and users can choose series outside the table according to their usage. Table A1
Product code
Free height
Maximum outer diameter
Static load
Static stiffness
Product code
JB/T8584---1997
Table A1 (Complete)
Note: D is the maximum outer diameter of the composite spring when it is compressed. Free height
Maximum outer diameter
Static load
Static stiffness
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