This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of common steel tube rollers for papermaking machinery. This standard is applicable to breast rollers, table rollers, couch rollers, wire drive rollers, guide rollers, paper guide rollers, spreader rollers and other common steel tube rollers for papermaking machines. QB/T 1422.5-1992 Technical conditions for common steel tube rollers for common parts of papermaking machinery QB/T1422.5-1992 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Technical Conditions for Ordinary Steel Tube Rollers
General Parts of Papermaking Machinery
Subject Content and Scope of Application
QB/T 1422.5—1992
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of ordinary steel tube rolls for papermaking machinery.
This standard applies to breast rolls, table rolls, couch rolls, mesh drive rolls, guide rolls, paper lead rolls, spreader rolls and other ordinary steel tube rolls for papermaking machines. 2 Reference standards
GB191 Pictorial marking for packaging, storage and transportation
GB/T1184 Provisions for shape and position tolerances without tolerances GB/T1958 Provisions for shape and position tolerance testing GB5799 Dynamic balancing of papermaking machinery rolls and drying cylinders GB/T6388 Marking for shipping and receiving of transport packaging
GB/T9895 Classification of surface characteristics of rubber rollers
GB/T 9897
Technical conditions for rubber rollers for papermaking
GB/T14253 General technical conditions for light industrial machinery JB/T8 Product labels
JB/T2836 Electroplating and chemical covering layers of electrical products 3 Technical requirements
Ordinary steel tube rollers (hereinafter referred to as products) must comply with the provisions of this standard and be manufactured in accordance with the working drawings and technical documents approved through the prescribed procedures.
3.2 The shaft head shall be tempered or normalized after forging, with a hardness of HB170~255. 3.3 The product size tolerance and surface roughness shall not be lower than the requirements of Table 1. Table 1
Roller type
Smooth steel roller
(without coating)
Copper-plated roller
Chrome-plated roller
Rubber-coated
Plastic-coated roller
Diameter tolerance
Outer surface roughness R.
Match with rolling bearing
Diameter tolerance
Ministry of Light Industry of the People's Republic of China 1992-11- 10 Approval of the shaft neck matched with the bearing
Match with the withdrawal sleeve
Surface roughness R
Diameter tolerancewwW.bzxz.Net
Surface roughness R.
1993-07-01 implementation
QB/T1422.5—1992
3.4 ​​The total runout of the product roll surface to the common axis of the shaft neck at both ends shall not be less than the 9th grade of GB/T1184. 3.5 The product shall be balanced, and the balance shall be carried out in accordance with the provisions of GB5799. When the static balance is checked, the static balance residual unbalance shall not be greater than the provisions of Table 2. Table 2
Breast roll, screen drive roll, paper guide
0. 000 5 m
Note: m is the mass of the product.
3.6 The ordinary steel pipe with coating layer shall meet the following requirements respectively. 3.6.1 Rubber-coated rollers
Technical requirements for rubber-coated rollers shall comply with the provisions of 1 to 4.1 of GB/T9897; the hardness of the rubber coating shall meet the requirements of Table 3;
Name of rubber-coated rollers
Rubber hardness (Shore A)
Upper couch roller
Table roller, upper couch roller, guide roller, spreader roller
Table roller, breast roller, drive net pry, guide pry, spreader roller 95±5
On any 100mm×100mm rubber roller coating surface, there shall be no more than 5 holes with a diameter of 1 to 2mm, and repair is allowed. c.
The classification of the surface characteristics of rubber-coated rollers shall comply with the provisions of GB/T9895 (including rubber-coated rollers that have been repaired due to defects). 3.6.2 The coating thickness of copper-plated rollers and chrome-plated rollers shall comply with the provisions of Table 4;
Guide rollers, paper guide rollers, and stretching pry
Copper coating thickness after processing
Chromium coating thickness after processing
b. The coating quality shall comply with the provisions of JB/T2836. The number of coating defects such as leakage plating and peeling with a maximum diameter not exceeding 3mm on the same roller shall not exceed 6 (the defect diameter starts from 1mm). 4 Test methods and inspection rules
4.1 Test methods
4.1.1 Dimensional tolerances shall be inspected by conventional methods; surface roughness shall be inspected by comparison samples or profilometers, and surface bumps and scratches shall be inspected by visual inspection. 4.1.2 The full runout of the roller facing the common axis of the two end journals shall be inspected according to GB/T1958, and inspection on machine tools is also allowed. 4.1.3 Residual unbalance detection of steel tube rollers
a. Dynamic unbalance shall be tested in accordance with GB5799, b. Static balance shall be tested by horizontal flat guide shaft method. 4.1.4 Rubber-coated rollers shall be tested in accordance with GB/T9897 test method. 4.2 Inspection rules
4.2.1 Each product shall be inspected by the manufacturer before entering the paper machine assembly or leaving the factory. Products shall be accompanied by inspection certificates when leaving the factory. 4.2.2 Factory inspection shall be carried out in accordance with 3.1, 3.2, 3.3, 3.4, and 3.5. When the roll surface has a coating layer, the corresponding articles in 3.6.1 and 3.6.2 shall be selected for inspection according to the rollers with different coating layers. 4.3 Judgment rules: Factory inspection shall assess product quality according to the lowest quality grade of the inspection results. 5 Marking, packaging, transportation, storage
5.1 Marking
QB/T 1422. 5-—1992
5.1.1 When the product leaves the factory alone, a nameplate shall be nailed on the end face of the roller step or the end face of the shaft. The type and size of the nameplate shall comply with the provisions of JB/T8. The product nameplate shall include the following:
Product name, model;
Product specification;
Factory date and factory number;
Manufacturer name.
3 The graphic markings for packaging, storage and transportation shall comply with the provisions of GB191 and GB/T6388. 5.2 Packaging, transportation and storage
5.2.1 The exposed processing surface of ferrous metal should be coated with anti-rust grease, the rubber surface should be coated with talcum powder, and then wrapped with moisture-proof paper. The roll surface should be evenly wrapped with a 5~10mm thick soft protective layer, and then the shaft head should be fixed in the wooden box. The gap between the roller and the roller should not be less than 50mm. 5.2.2 The packaging should comply with the requirements of GB/T14253. 5.2.3 During transportation and storage, the product should be protected from rain, moisture and chemical corrosion. 5.2.4 For long-term storage, the product should be rotated 180° regularly according to the slenderness, and the anti-rust treatment should be re-applied every year. 5.2.5 The marking, packaging, storage and transportation of rubber-coated rollers should comply with the provisions of GB/T9897. Additional remarks:
This standard was proposed by the Technical Equipment Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Light Industry Machinery Standardization Center. This standard was drafted by Yibin Paper Machinery Factory. The main drafters of this standard are Wu Guihua and Qing Wenxiang.
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