Machinery Industry Standard of the People's Republic of China JB/T53048-1999 Quality Grading of Corrugated Machine Products (Internal Use) Published on December 30, 1999bZxz.net National Bureau of Machinery Industry Implementation on June 1, 2000 JB/T53048-1999 This standard is a revision of JB/T53048-92 "Quality Grading of Corrugated Machine Products". During the revision, the original standard was edited, and the main technical content remained unchanged. This standard replaces JB/T53048-92 from the date of implementation. This standard was proposed and managed by the Packaging Machinery Standardization Subcommittee of the National Packaging Standardization Technical Committee. The responsible drafting unit of this standard: Hefei General Machinery Research Institute. The main drafters of this standard: Wu Ruiping and Liu Hongqing. 1 1 Scope Machinery Industry Standard of the People's Republic of China Quality Grading of Corrugated Machine Products (Internal Use) This standard specifies the quality grade, test method, sampling and evaluation method of corrugated machine products. JB/T53048-1999 Replaces JB/T53048-92 This standard applies to corrugated machine products specified in JB/T7542-1994 "General Technical Conditions for Corrugated Machines". 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 will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. JB/T7542—1994 General Technical Conditions for Corrugated Machines 3 Product Quality Grades Corrugated machine products are divided into two grades: qualified products and first-class products according to their quality level and use value. 3.1 In addition to complying with the provisions of JB/T7542, the project indicators and requirements of each assessment grade shall also comply with the provisions of Table 1 and 3.2. Assessment items Corrugated paper quality Upper corrugated roller to lower corrugated roller Axis parallelism error Corrugated roller tooth surface roughness Corrugated roller life Working noise Effective amplitude ≥1500mm Effective amplitude <1500mm E-type corrugated Main parts and main items qualified rate% 3.2 The structural level of the corrugator is classified according to the following contents: Product quality grade Qualified products Corrugations are evenly hooked and straight, without obvious reverse corrugation, cracks, folds, etc. ≥10×10* First-class products: the temperature of the corrugated roller is automatically controlled and heat-insulated. 4 Test method Perform according to the test method specified in JB/T7542. Approved by the State Machinery Industry Bureau on December 30, 1999 Corrugation is uniform and straight, without inverted corrugation, breakage, folding, etc. ≤012 ≤008 ≤Q06 ≥1.5×104 Implemented on June 1, 2000 5 Sampling and evaluation methods 5.1 Sampling method Product sampling shall be carried out in accordance with the provisions of JB/T7542. Evaluation method JB/T530481999 To evaluate the product quality grade, it must meet the index requirements of all assessment items of the grade, or the grade shall be determined according to the lowest index achieved. 2 Mechanical Industry Standard Corrugated Machine Product Quality Classification (For internal use) JB/T53048-1999 Published and issued by the China Academy of Mechanical Science Printed by the China Academy of Mechanical Science (No. 2 Shouti South Road, Beijing, Postal Code 100044)* Format 880×12301/16 Sheet 1/2 Number of words 6000 First edition in May 2000 First printing in May 2000 Number of copies 1-500 Price 1000 yuan No. 99-1676 Mechanical Industry Standard Service Network: http:/hvwwJB.ac.cn6680 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.