JB/T 7860-2000 This standard is a revision of JB/T 7860-1995 "Metal Wire for Industrial Netting". This standard specifies the circular cross-section metal steel wire for industrial netting with braiding and other processing methods, with a diameter of 25~0.018mm. This standard is applicable to industrial wire mesh. This standard was first issued as GB 8605-88 in January 1988, and the standard number was adjusted to JB/T 7860-95 in April 1996. JB/T 7860-2000 Metal Wire for Industrial Netting JB/T7860-2000 Standard download decompression password: www.bzxz.net
JB/T 7860-2000 This standard is a revision of JB/T 7860-1995 "Metal Wire for Industrial Netting". This standard specifies the circular cross-section metal steel wire for industrial meshes with braiding and other processing methods, with a diameter of 25~0.018mm. This standard is applicable to industrial metal wire screens. This standard was first issued in January 1988 as GB 8605-88 and the standard number was adjusted to JB/T 7860-95 in April 1996.

JB/T7860-2000
Foreword
This standard is a revision of JB/T7860-1995 "Metal Wire for Industrial Netting". During the revision, the original standard was edited, and the main technical content remained unchanged.
This standard replaces JB/T7860-1995 from the date of implementation. This standard is proposed and managed by the National Screen Screening Standardization Technical Committee. The drafting unit of this standard: Mechanical Science Research Institute. The main drafters of this standard: Yu Fang, Qi Ping, Wu Guochuan. This standard was first issued in January 1988 as GB8605--88, and the standard number was adjusted to JB/T7860-1995 in April 1996. 505
1 Scope
Mechanical Industry Standard of the People's Republic of China
Metal wire for industrial wire screenswoven wire cloth
JB/T 7860-2000
Replaces JB/T7860-1995
This standard specifies the circular cross-section metal steel wire for industrial wire screenswoven wire cloth by weaving and other processing methods, with a diameter of 25 to 0.018 mm. This standard applies to industrial wire screens. 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 valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T228-1987 Metal tensile test method
GB/T2103-1988 General provisions for steel wire acceptance, packaging, marking and quality instructions 3 Size, shape, weight
3.1 Size
The diameter of the metal wire shall comply with the provisions of Table 1. 3.2 Shape
3.2.1 Each coil or shaft of metal wire must consist of one wire. 3.2.2 The wire coil should be neat and tidy, without any looseness or "C" shape. 3.2.3 The wires of the wire shaft should be evenly hooked and solid. When the wire is freely hanging, S-shaped curling and the movement that affects the weaving are not allowed.
3.2.4 The curvature of straight wire shall not exceed 4mm per meter. 3.3 Weight
The wire is delivered in the form of straight wire, coil or shaft, and its weight shall comply with the agreement between the supplier and the buyer. 3.4 Marking
Marking method of metal wire for industrial mesh:
Standard number
Diameter deviation level
Material grade
Wire diameter | |tt||Name
Guohao Machinery Industry Approved on 2000-11-28 506
Implemented on 2001-06-01
Marking Example
JB/T7860-2000
Example 1: The metal wire with diameter d=0.25mm and grade I precision of H80 is marked as: Metal wire 0.25-H80IJB/T7860—2000 Example 2: The metal wire with diameter d=1.25mm and grade I precision of 1Cr18Ni9 is marked as: Metal wire 1.25-1Cr18Ni91
JB/T 7860—2000
4 Technical requirements
4.1 Surface quality
The surface of the metal wire should be smooth and free from longitudinal marks, burrs, cracks, knots, folds, rust and other obvious defects. The metal wire should not have knots, depressions and welding points that affect the tensile strength. The surface of the metal wire is allowed to have oxidation color that does not affect the use. 4.2 Tolerance
4.2.1 The diameter deviation of the metal wire shall comply with the provisions of Table 1. 4.2.2 The roundness tolerance of the metal wire shall not exceed half of the diameter deviation specified in Table 1. Table 1
Metal wire diameter
25.0*||tt ||22.4
20.0·
18.0
16.0*
14.0
12.5
11.2
10.0*
9.00
8.00*
7.10
6.30*
5.60
5.00
4.50
4.00
3.55
3.15
2.80
2.50
2. 24
2.00*
1.80
±0.12
±0.10
±0.08
±0.07
±0.06
0.05
Difference Ad
Metal wire
Diameter deviation
Stainless steel or non-ferrous metal
-0.13
±0.08
±0.07
±0.06
±0.05
±0.04
±0.03
—0. 11
0.09
-0. 075
+0.05
— 0. 04
+0.04
0.03
Wire diameter
1.60*
1.40
1.25*www.bzxz.net
1.12
1.000
0.900
0.800*
0.710
0.630
0.560||tt| |0.500*
0.450
0.400
0.355
0.315
0.280
0.200*
0.224
0.200
0.180
0.160
0.140
0.125\
0 .112
0.100
0.090
0.080
0.071
0.063
0.056
0.050
0.045
0.040
0.036
0.032*
0.030
0.028
0.025*
0.022
0.020
0.018
±0.04
±0.03
±0.02
±0.015
±0.010
±0.008
±0.006
Note: Those marked with * are the preferred metal diameters. 508
JB/T 7860—2000
Table 1 (End)
Wire diameter deviation d
Stainless steel or non-ferrous metal
±0. 02
±0.015
±0.010
±0.008
±0.006
±0.004
±0.003
±0.002
±0.0015
±0.0015
+0.04
0.02
+0.03
-0. 015
+0.025
0.010
+0.025
0.008
+0.020
0.006
+0.015
-0.004
+0.007
0.003
+0.005
-0.002
+0.0040
-0.0015
+0.0030
-0.0015
4.3 Materials
JB/T7860-2000
The material of the metal wire should be selected from Table 2. According to user requirements, other materials can also be used through negotiation between the supply and demand parties. Table 2
Carbon steel
Stainless steel
Aluminum alloy
Tin bronze
4.4Mechanical properties
Material grade
Q195
1Cr18Ni9
QSn6.5-0.1
QSn6. 5-0. 4
NCu-2. 5-1.5
Finished metal wires shall be subjected to tension and elongation tests, and the requirements shall be in accordance with the agreement between the supplier and the buyer. 5 Test methods
5.1 The surface quality of general metal wires shall be visually inspected, and may be observed with the aid of a low-power magnifying glass if necessary. Density
kg/m3
7850
7800
2650
8500
8830
8800
5.2 The diameter deviation and roundness error of the metal wire shall be measured separately, and the measurement shall be made at no less than five locations, and the average value shall be taken as the measured value. 5.3 The tension test of metal wires shall comply with the provisions of GB/T228, and the length of the test piece shall be 100mm or 200mm. The finished metal wire tensile test shall be completed with a test report, which shall include: 5.4
a) nominal diameter of the metal wire;
b) material grade of the metal wire;
c) maximum, minimum and average diameter of the metal wire;
d) tensile force and elongation of the metal wire;
e) test date and stamp of the technical supervision department. 6 Marking, packaging, transportation and purchase and storage
6. 1 Marking
6.1.1 The finished metal wire shall be attached with product marking, which shall include: a) product name;
b) standard number;
c) material grade of the metal wire;
d) nominal diameter of the metal wire;
e) weight (net weight);
f) date of manufacture (or production date);
g) stamp of the technical supervision department.
6.1.2 Each outer packaging unit shall be marked with: a) product name;
b) manufacturer name;
c) net weight and gross weight;
d) date of publication;
e) packaging storage and transportation pictorial mark.
6.2 Packaging
JB/T78602000
6.2.1 The inner packaging of finished metal wire shall be made of neutral moisture-proof paper, paraffin paper, plastic film and other materials that do not affect the surface quality of the gold wire.
6.2.2 Each outer packaging unit shall be accompanied by product certificates and other accompanying documents. 6.2.3 Each batch of products shall be accompanied by a quality certificate, the content of which shall comply with the provisions of GB/T2103. 510
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