This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of brass plates and strips for watches (hereinafter referred to as plates and strips). This standard is applicable to the brass plates and strips used in the manufacture of watch parts, and can also be used as a reference in the daily machinery industry such as instruments and meters. QB/T 1539-2005 Brass plates and strips for watches QB/T1539-2005 Standard download decompression password: www.bzxz.net

JCs 39 04C
Classification number: Y11
Preparation number: 16395-2005
Light Industry Standard of the People's Republic of China
QB/T15392005
Warning QR/T15391992
Brass sheets and strips for watches and clocks
Brass sheets and strips for watches and clocks2005-07-26Promulgated
2006-01-01Implementation
Promulgated by the National Development and Reform Commission of the People's Republic of ChinaForeword
This standard is a revision of QB/1539-1992 "H62, H68 brass pin plates and strips for watches and clocks". The main technical differences between this standard and QBT1539-1992 are as follows: "-- Standardizes the classification, specification, and marking expression, and cancels the unapplication specification (3) - Adds the requirements for "tensile strength" and "elongation" (4.3.2). This standard is issued by the China National Clock and Watch Standardization Center! ... The previous versions of the replaced standard are: QE875-1983QBT1539-1992.
QB/T1539-2005
This standard replaces the original light industry standard QB/T1539-1992 for watchmaking TH62, H8 general yellow steel plate and strip 3 issued by the Ministry of Light Industry from the date of implementation.
1 Standard field
Brass plate and strip for watchmaking
QH/T 15392005
This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of yellow plates and (hereinafter referred to as shift plates, chemical plates) for watches.
This standard is applicable to the manufacture of precious copper electrodes and belts for watches, and can be used by the instrument industry such as watchmakers. 2 Normative references
A standard is a clause that becomes a technical standard through reference to a standard: All referenced documents with a specified date, all subsequent amendments (excluding errors) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to use the latest versions of these documents. If no reference is made, the latest version shall apply to this standard. (iB T228 Test method for tensile strength of materials under load temperature CIBT4340.1 Hardness test for copper - Part 1: Test method (IR/T5121.1 Method for chemical analysis of copper alloys - Determination of copper plate GB/T634 Method for determination of semi-average particle size of copper alloys GB/T8B Packaging, marking, transportation and storage of non-ferrous metal products GB/T106I Specification for geometrical technology of non-ferrous metal products - Method for evaluating surface structure by surface profile method - Method for microstructure inspection of gold products GB/13296 3 Classification, specification and marking 3.1 Classification 3.1.1 Classification by shape 1.2 Classification by brand
-1162;
3.1.3 Classification by state
-Iodine (T);
-Hard ();
-1/2 Hard (Y
Model (M:
3.1.4 Classification by process
Practical polishing.
3.2 Specifications
3. 2. 1 Basic size
Size of plate and bone 1.
QH/T1539-2005
.1c,15,020. 0.25.0.35..35,heart 40C.45,0.50,a550.60, C.65:0.70,0.75:0.80,0.85:0.90.0.95:1.00,120,1.30.1.51,1.60.2.00
Certification: The certification is required by the parties. 3.2.2 Delivery size
8u, , 190, u
120,155
is related
:~1230
800~1200
32.2 Each customer can pass the short length: the length of the village should not be less than 500mm, the production size should not be less than 15% of the total quality, the length of the belt should not be less than 3000mm, the quality should not be less than 15% of the total quality. 3.2.2.2 The inner diameter of the material should not be less than 300mm. 23 times
The product brand of the cover and tape is marked as:
Deep standard number
a, He2 is the extreme risk of waste material as Class A: 2rmm, 1hrm of use tape model: H62TA tape.5:00
B11539-2005
b) 68 thickness limit is B, thickness 1.5mm, width Amm state or material standard: Plate Y6
4 Requirements
Chemical composition
43920G5
Design, the chemical composition of the tape shall comply with the provisions of Table 2.42 Appearance
42.1 The plate, half layer 9 and the finish limit shall be as specified in Table 3. 4.2.2 The plates and belts shall be straight and the connection length shall be flat and the length shall comply with the requirements in Table 3. 4.2.3 The connection length of the plates and belts shall comply with the requirements in Table 3.22.1 and the ends of the belts shall comply with the requirements in Table 3. ?www.bzxz.net
wF162
2.0.14---0.20
:>0.200.35
0.35--0.55
tl >-n.70
>c.70~-0 85
>c.85-11n
21..u--] su
1.sn -2.00
1 ingredient%
6c.5--63 5
57.0--70 0
Sharp promotion chasing light/blood
4.3 Mechanical properties
4.3.1 The carbon content of the end type shall not exceed 4 regulations. Table 2
4.3.2 The tensile strength and elongation of the strip shall be determined by both parties. Main 4 Appearance
5 Strength/% (Part)
Horizontal
Send 41%
OR/T15592005
Edition
2.4.1 The surface of the board shall be strictly flat and smooth, and shall not have any pitting, peeling, dullness, folds, waves, rust and other pitting. Total
4.4.2 The board shall not have any pitting such as oxidation, oil stain, water stain, etc. that cannot be removed by polishing. 4.4.3 The board shall have slight scratches, concave resistance, indentation, spot, etc., and the accumulation shall not exceed the material displacement! 10% average moisture content is not absorbed, the maximum deviation of the back search is 50%: 4.4.4 Edge, section, do not consider crack edge and difference selection, the length and width of the three thorns on the reverse should not be greater than 0.5mm. 4.4.5 Plate, impact package scanning number K sense will be determined in Table 4. 4.5 Microstructure
Plate, strip microstructure is self + organization, the average grain size should not be greater than (.053mm.Q/T1539-2005
Extra hard (T)
5 Test method
5.1 Chemical composition
Dimensional psychology HV
(Y)
Core [60-:40
14012
The chemical test of the plate should be carried out according to the method of GB/T5121.1. The impurity content should not be divided and the total should not be greater than the specified value. 5.2 Appearance
The inner diameter of the material should be measured by a ruler with a limit difference of 0.001m. The distance between the measuring point and the part should not be less than 3mm. The horizontal and half-surface dimensions should be measured with a standard piece and a square ruler. The horizontal and end face dimensions should be measured with a square ruler and an angle ruler. 5.3 Mechanical properties
5.3.1 Hardness test should be carried out with a hardness tester according to the method of GB/T4340.1: 5.8.2 Tensile strength and extension test should be carried out with a tensile tester according to the method of GT228. 5.4 External 5.4.1. Appearance should be inspected by normal vision. 5.4.2. Surface quality should be inspected by visual inspection. If necessary, the surface quality should be measured by wheel according to the method of GB/T10610. 5.5. Microstructure Microstructure Take the longitudinal section of the sample and perform the microstructure test according to the method of GB/T13298. The average grain size should be determined according to the method of GB/T16394: 6. Inspection rules 6.1. Inspection items. The inspection items of the belt are shown in Table 5. 6.2. Batch. The belt should be inspected (accepted) as a batch. Each batch should be inspected in the same size, same brand and same shape. 6.3 Sampling
6.3.1 Chemical composition inspection, for delivery inspection, one sample should be collected during the smelting process; for re-inspection, one sample should be taken from the batch of products.
632 Width, mechanical properties, micro-control inspection, and two samples from each batch of products. 6.3.3 Appearance and shape inspection, each batch is inspected for all items. 8.4 Qualification judgment
6.4.1 If all items of the inspected samples are qualified, the batch of products is qualified: 6.4.2 If there is one unqualified product in the inspection, a sample should be taken from the same batch of products, and the unqualified items should be re-inspected. If there are any unqualified items in the re-inspection, the batch of products is unqualified. 6.5 Disposal after inspection 6.5.1 The unqualified batches of products will be inspected and followed up, and the qualified products will be collected separately. 5.2 The disposal after inspection will be discussed by both parties. 7 Note! ：
Chemical composition word difference
Safety limit deviation
Displacement technical limit deviation
Environmental mountain level
Side through the line certificate
Corresponding clauses
d.4.1--d.4.4
"* is the control item," "human inspection is also carried out: 2: a safety inspection is carried out, "grab" is carried out by the ticket party with 3: a microscopic weaving" has a school inch for this inspection, 7 marking, packaging, transportation, storage
The packaging, marking, transportation and storage of boards and tapes shall be in accordance with the provisions of GB/TB888: delivery training
Q/T1539
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