HG/T 2400-1992 Chilled Cast Iron Roller Product Quality Grading and Inspection Rules HG/T2400-1992 Standard Download Decompression Password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2400-92
Chilled Cast Iron Roller
Product Quality Grading and Inspection Rules
Published on September 15, 1992
Ministry of Chemical Industry of the People's Republic of China
Standard Access Network a0x528080:00sFree Download of Various Standard Industry Materials of Various Categories1993-07-01Implementation
Chemical Industry Standard of the People's Republic of China
Chilled Cast Iron Roller
Product Quality Grading and Inspection Rules
Subject Content and Scope of Application
HG/T2400-92
This standard specifies the product quality grading, assessment indicators and evaluation methods of chilled cast iron rollers in accordance with the General Rules for Quality Grading of Rubber Machinery Products.
This standard applies to the assessment of the quality level of chilled cast iron rollers produced in accordance with GB9709. 2 Reference standards
GB9709 Chilled cast iron rollers
HG5-1543 General technical conditions for rubber machinery packaging HG5-1613 Inspection methods for chilled cast iron rollers 3 Main assessment contents
Performance indicators (see Table 1)
Quality characteristics
Roller diameter:
≤250
Roller white
Layer depth
Roller work
Surface hardness
Roller journal
Surface hardness
Hydrostatic test
>250~500
>400~500
Alloy roll
Non-alloy roll
Alloy roll
Non-alloy roll
Rubber calendering
Machine roll
Quality characteristics
Importance
Category code
Superior product
First-class product
Alloy chilled cast iron
Qualified product||tt ||Ordinary chilled cast iron
Under 1.50 times the working pressure,
pressure test for 10 minutes, no leakage
Under 1.25 times the working pressure,
pressure test for 10 minutes, no leakage
The Ministry of Chemical Industry of the People's Republic of China approved the standard on September 15, 1992. m.bssogo.ccm customer standard industry information free download inspection method
According to HG5-1613
1993-07-01 implementation
Quality characteristics
Gray cast part of the cylinder
Mechanical properties
Tensile strength MPa
Gray cast part of the cylinderbZxz.net
Bending strength MPa
Machining
Cylinder diameter:
Cylinder shaft neck
Coaxiality between surface and non-machined inner surface
Tolerance mm
>50~400
>400~500
Casting Defects
3.2 Appearance and packaging (see Table 2)
Quality characteristics
Inner hole cleanliness
Rust resistance
Manufacturing unit or trademark
Marking according to the regulations
Roller packaging
Quality characteristics
Importance
HG/T2400—92
Continued Table 1
Superior products
Category code
First-class products
Not less than 180|| tt||Not less than 360
Qualified products
The dimensional accuracy and surface roughness of the roll should comply with the provisions of the rubber calender open rubber mixing mill product quality classification and inspection details for the roll.
Quality
Importance
Category code
The roll is not allowed to have cracks, the roll working surface is not allowed to have defects, and the surface of the roller is allowed to have defects at the gear installation location. The surface of the journal is not allowed to have pores or sand holes with a diameter of 3mm or less. The number of pores or sand holes with a depth of less than 2mm shall not exceed 3. Superior products and first-class products are not allowed to have cracks. The non-working area (referring to the two end baffles) of the journal is allowed to have pores and sand holes with a diameter of less than 2mm, and the number shall not exceed 3. The quantity shall not exceed 3 rollers, and the surface of the journal is not allowed to have defects such as air holes, sand holes, shrinkage, etc. Air holes with a diameter of 3mm and a depth of 2mm or less are allowed at the mounting gear, and the quantity shall not exceed 3. No residual sand, metal chips, etc. shall be left in the inner hole of the roller. The surface of qualified products is coated with anti-rust agent and will not rust within half a year from the date of leaving the factory. The end face of one end of the mounting gear is stamped with a steel stamp. Roller packaging should be in accordance with the provisions of HG5-1543, standard investment technology network wm.b2Bo80.com various standards industry information free download inspection method
According to HG5-1613
According to standard provisions
According to HG5-1613
Inspection method
Inspect the actual object
3.3 User evaluation (see Table 3)
Quality characteristics
User evaluation"
Quality characteristics
Importance
Category code
HG/T2400-92
Quality characteristic value
Superior product
Qualified product
User recognizes that the product has reached the corresponding grade level Note: "User evaluation\ is only assessed when the product grade is comprehensively assessed. 3.4
Quality characteristic inspection record (see Table 4)
Inspection:
Quality characteristic
Importance category
Special code
4 Product quality grade assessment
Quality characteristic value
Superior product
First-class product
Approval:
4.1 Product quality grade assessment method (see Table 5)Importance category
Characteristic value level
Product quality grade
Superior product||tt ||First-class products
Qualified products
Superior products
All achieved
Qualified products
First-class products
All achieved cumulatively
Qualified products
Testing methods
Inspection of original vouchers of user feedback and evaluation
Superior products
All achieved
Superior products
Audit:
First-class products
All achieved cumulatively
All achieved cumulatively
Take all achieved
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Qualified Products
Qualified Products
All Meet
One Defect is Allowed
Two Defects are Allowed
4.2 Evaluation of Product Quality Grade (See Table 6) Manufacturer Name
Product Name
Specification Model
Product Number
Completion Date
Quality Characteristics
Importance Category
Inspection Number of items
Product rating of this unit:
Quality manager:
Additional instructions:
Number of items to be inspected
HG/T240092
Superior product level
This standard is proposed by China National Chemical Equipment Corporation, 6
Product drawing number
Factory number
First-class product level
Qualified product level
This standard is under the jurisdiction of the Rubber Machinery Sub-Technical Committee of the National Rubber and Plastic Machinery Standardization Technical Committee. This standard was drafted by Shanghai Cold Casting Roller Factory. The main drafters of this standard are Sun Rongqing, Zhuang Jingming, Standard Danshi Network
o.cem.All kinds of standard industry data are free to download
People's Republic of China
Chemical Industry Standards
Chilled Cast Iron Roller
Product Quality Grading and Inspection Rules
HG/T2400-92
Editor Chemical Industry Standards Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printing Chemical Industry Standardization Research Institute
Copyright is exclusive and may not be reproduced
Format 880×12301/16 Printing Sheet% Number of Words 8000First Edition in July 1993
First Printing in July 1993
Print Quantity 1-500
Standard Exchange Network xb28080:0m
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