This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of coating scrapers. This standard applies to coating scrapers used in coated paper production lines. QB/T 2574-2002 Coating scrapers QB/T2574-2002 Standard download decompression password: www.bzxz.net

ICS 85. 100
Classification No.: Y91
Registration No.: 114C4-20C3
Light Industry Standard of the People's Republic of China
QB/T2574—2002
Cuaterblades
Published on 2002-12-27
Implementation by the State Economic and Trade Commission of the People's Republic of China on 2003-04-01
QB/T2574-2002
The standard is formulated with reference to the technical requirements of similar products in China and the requirements of domestic standards for cloth scrapers. The standard is formulated by the China Light Industry Federation according to the National Light Industry Machinery Standardization Technical Committee. This standard originator: Beijing Standard Development Center: Yun Standard main originator: Cexinwa,
1 Scope
Coating scraper
QR/T25742002
This standard defines the classification, requirements, test methods, inspection principles and marking, packaging, delivery and storage of coating scrapers. This standard is applicable to coating scrapers used in the production of coated paper in Vietnam. 2 Normative references
The following documents become the terms of this standard through reference to this standard: Any reference document issued on a certain date, any subsequent amendment (excluding incorrect content) or modified version is not applicable to this standard, but shall be effective according to this standard. The parties to the agreement shall use the latest version of these documents. H is an undated document, and its latest version is applicable to this standard GB/T1! Table of contents B1216 External diameter measurement GB1298 Carbon steel sheet and its preparation conditions GB/T13298-1991 Microstructure test method B/13384 General technical conditions for packaging of emulsion products CB191 Packaging, storage and transportation diagram D/T8788 3 Classification 3.1 Product type Classification according to the cutting method Figure 1, R QB/T 2574—2002
3.2 Product code
Coating code representation such as:
BXH×XR
4 Requirements
4.1 Limit deviation of the knife for the cloth
The negative angle of the blade is represented by R
The length of the cloth is represented by H
The thickness of the coating (m) is represented by the letter T. The length and width of the heald cloth scraping are shown in Table 1, Table 2 and Table 3. Table 1 Length limit density Heald cloth scraping K failure, investment limit base, basic size, section limit rate, local, but the same deviation. +
According to the limit value, local, limited, ±
103~·20
-2~3(K
? Width limit deviation | |tt||(84,86)
Thickness limit deviation
The limit tolerance of the coating scraper is! ! ,0.3y
>3009-·4uu
.Head 1HeadbZxz.net
Note 2: For the length L of the coating scraper, the length can be adjusted to the size specified by the manufacturer. 4.2 Geometric tolerance of coating scraper
4.2.1 The straightness of the coating scraper length should meet the requirements of formula (1). Requirement: The length of the blade to be measured is the same as the length of the blade. F
Wu Zhong:
The length of the blade to be measured, the length of the blade to be measured, the length of the blade to be measured, the length of the blade to be measured.
4.2.2 Parallelism of the blade edge of the coating scraper
QB/T2574—2002
The blade [In accordance with the requirements of 4,2.1, the linear degree and the full scale of the blade according to 4,1 are the same as the tax limit number of the piece, and its parallelism is 4. Table 4 Parallelism
Coating scraper length, 1
Parallelism
4.3 Material of coating scraper
:=2000
>2003--3000
>30C0--45DO
The material of the coating scraper should be high carbon steel, and the solid carbon alloy with performance above 100% should be used! The chemical composition and performance of the coating knife shall comply with the provisions of GB129R. 4.4 Heat treatment requirements for coating knives 4.4.1 Hardness of the coating knife shall comply with the requirements of Table 5, hardness of the coating knife: m, HVD.2 4.4.2 Gold finger structure 560--590 550--580 10--570 The surface roughness of the coating knife shall comply with the provisions of GB/113298-1991. 4.5 Surface roughness of the coating knife 535--56.5 4.5.1 The surface roughness of the coating knife shall comply with the provisions of GR/T1031 R0.25:. H. sI
530554
45.2 The coating direction and the blade surface shall be in accordance with the provisions of GD1031. R1.4.6 Appearance requirements for coating scrapers
4.6.1 The blade edge of the coating scraper shall not have any defects such as scratches, numbness, etc. 42 The surface of the coating scraper shall be smooth and shall not have cracks, rust spots, thorns, unevenness, rotation, etc. The test method of the coating scraper shall be in accordance with the provisions of Table 6. Table 6 Scraper Test Method
High-quality and high-quality products
Wind thickness
Blade line
Blade edge Degree of deviation
Wu test method
Use a light ruler to determine the length of the middle of the piece. Use a diameter ruler. Usually 100 points and two sharp knives are used. Use an outer diameter ruler at both ends of the piece. 1 in the middle of the three pieces
The blade is turned back to the original ruler. The outer diameter ruler can be used at one end [00m year box 200m30 according to the maximum measurement limit. The other end can be measured directly. T tool
Steel Hall
GB1216 specifies
Outer diameter dry points
Current case length
GB1216 Yuebao Bar
Outer diameter in Anke
QB/T 2574 2002
Clean cloth scrapes hard
All organizations
Clothes surface appears
6 Test resistance
Table 6 (continued)
Test method
Take a large test piece (surface and not 2m×20mm1) at a position on the blade, test on 1000 chain test, 2 degrees of pressure
Measurement tool
HX1KIO
Take a small piece at a comfortable position of the blade, and observe its shape under a 5D× optical microscope after the bottom, light and fullness of the body are found. 、Product pulling array, carbonized soft optical gold rod total enough mirror, people small and distribution
Use surface machine technology key meter or surface material width standard non-material ratio determination small view! Surface and external point room reduced 2× change into single cut case scratch mouth stored tongue, wound, blue machine, collar square, etc., 9 happy system rain sheep replacement and notch, etc. and coarse grain width determination
20×40×
Magnification
6.1 Products must be inspected by the production unit supervision department according to the wood standard and qualified products must have product certificate before they can be printed. B.2 Product inspection is divided into small inspection and type control. 6.2.1 Delivery inspection
a) 4.1.4.2.1, 4.6 are full inspection items, all of which must be qualified. b) 4.4, 4.5 are inspection items with a 3% inspection rate, 4.2.2 are inspection items with a 2% inspection rate, all of which must be qualified. 6.2.2 Type inspection
6.2.2.1 At delivery, select qualified products from the same batch and take samples (not less than 2 pieces) for type inspection: the items for type inspection are all items specified in this standard. 6.2.2.2 Type inspection should be carried out in the following situations: Under normal production conditions, once a year, when the original rate or soft change is large:
When there is a large difference between this type inspection and the previous type inspection: d)
When the national quality supervision department issues a single inspection requirement, the product packaging and storage should comply with the provisions of GB19! f.1 marking
7.1. The product name, specification, manufacturer name (or trademark) and implementation standard number should be clearly printed on the appropriate product. The following contents should be clearly marked on the packaging: 7.1.2
Product name, specification and number
b) Net weight and gross weight of the product:
Export date or batch number:
d) Standard numbering is adopted.
.2 Packaging
7.2.1 After the product is inspected and printed with the mark, it is coated with anti-pollution film. The mouth part can be protected by the product according to the requirements. Plastic film is used inside and foam plastic packaging is used outside. The outer packaging is natural packaging. 7.2.2 The product packaging and sales shall be signed in accordance with the specification of B13384: All export certificates are included. 7.3 Transportation
The product can only be transported in the shade during transportation. 7.4 Storage
QB/T 2574-2002
The product should be placed in a dry place and not exposed to rain or acidic substances or other toxic substances.
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