HG/T 2386-1992 Technical conditions for solid alkali boiler HG/T2386-1992 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2386-92
Technical Conditions for Solid Caustic Soda Boiler
Published on September 15, 1992
Ministry of Chemical Industry of the People's Republic of China
Implemented on July 1, 1993
Chemical Industry Standard of the People's Republic of China
Technical Conditions for Solid Caustic Soda Boiler
Subject Content and Scope of Application
This standard specifies the basic parameters and technical requirements for solid caustic soda boiler. This standard applies to solid caustic soda boilers that are directly heated by flames to concentrate sodium hydroxide solution. Cited standards
Chemical analysis methods for steel and alloys
Test methods for mechanical properties of grey cast iron
Dimensional tolerances of castings
GB6414
GB9439 Grey cast iron parts
3 Basic parameters and dimensions
3.1 The basic parameters of the solid alkali pot are as follows:
Volume: 11m2;
Capacity: 20t (alkali solution);
Self-measurement: 12t.
3.2 The shape and dimensions of the solid alkali pot shall comply with the provisions of Figure 1, 03275
Casting position
Shape and dimensions of the solid alkali pot
Ministry of Chemical Industry of the People's Republic of China 1992-0 9-15 Approved HG/T2386-
1993-07-01 implementation
4 Technical requirements
HG/T2386-92
4.1 The chemical composition of cast iron for solid alkali boiler shall comply with the provisions of Table 1. If the purchaser requires the addition of chromium or other alloy elements, it shall be proposed in the order contract and agreed upon by the supply and demand parties
Table 1 Chemical composition of cast iron for solid alkali boiler
Chemical composition
4.2 Tensile strength
The tensile strength of cast iron for solid alkali boiler shall not be less than 180MPa4.3 Appearance quality
4.3.1 The molding sand, pouring riser, burrs, etc. on the inner and outer surfaces of the solid alkali boiler shall be cleaned. 4.3.2 The uneven surface of the solid alkali boiler shall be polished flat. 4.4 Casting defects and welding repairs
4.4.1 Cracks and shrinkage defects are not allowed on the inner and outer surfaces of the boiler below the flange radius of the solid alkali boiler. 4.4.2 Minor defects on the inner and outer surfaces of the solid alkali boiler are allowed when the following conditions are met: a.
The equivalent diameter of the defect is less than or equal to 15mm; the actual wall thickness at the defect is not less than the wall thickness in the drawing minus 5mm. b.
The number of defects is not more than 4 within an area of ​​100cm, and the total number does not exceed 10. Welding repairs are not allowed on the inner surface of the arc part of the boiler. 4.4.34
For defects such as slag inclusions and pores on the inner and outer surfaces of the cylindrical part and the outer surface of the arc part of the pot body, welding repair is allowed. The defect range 44.4
and welding repair method shall comply with the following provisions:
The defect area shall not exceed 25cm2, and the distance between the edges shall not be less than 50mm; b.
When the defect depth is not greater than 1/4 of the wall thickness, electric welding with iron-nickel welding rods or cast iron welding rods is allowed; when the defect depth is greater than 1/4 to 1/2 of the wall thickness, gas welding should be used for welding. After welding, stress relief heat treatment should be carried out immediately; the total number of weld repairs shall not exceed 4;
The defective parts should be cleaned before welding; the weld repaired parts should be polished and smooth after welding, and checked with a magnifying glass of more than 5 times, and there should be no cracks. 4.5 The solid alkali pot should be aged after casting, and the specific details shall be negotiated by the supplier and the supplier. 4.6 The general dimensional tolerance of the solid alkali pot shall comply with the provisions of CT13 grade in GB6414. The limit deviation values ​​of the main dimensions are shown in Table 2.
Table 2 Limit deviations of main dimensions of solid alkali pots | |tt||Main dimensions
Limit deviation value
5Test method
Outer diameter 03096
5.1, The analysis of chemical composition shall comply with the provisions of GB223, height 2180Www.bzxZ.net
Wall thickness 70
5.2 The preparation of tensile strength test bars and specimens shall comply with Article 5.1 of GB.9439, and the tensile strength test shall comply with the provisions of GB977
Inspection rules
HG/T2386-92| |tt||The solid alkali pot shall be inspected and accepted by the quality inspection department of the manufacturer. 6.1
Each solid alkali pot shall be subjected to chemical composition analysis and tensile strength test. 6.2
6.3 The evaluation and re-inspection of the tensile strength test results shall comply with the provisions of Article 6.4.2 of GB9439. 6.4 The dimensions and dimensional tolerances of the solid alkali pot shall be inspected for each pot and shall comply with the provisions of Article 4.6. 6.5 The appearance quality of the solid alkali pot shall be inspected by visual method. Each pot shall be inspected and shall comply with the provisions of Article 4.3. Marking and factory documents
The following words should be cast on the solid alkali boiler: a.
Manufacturer's registered trademark or manufacturer's name; product manufacturing year and serial number
7.2, the solid alkali boiler should be accompanied by the following documents when it leaves the factory: a.
Product certificate;
Product quality certificate:
Product instruction manual,
Additional instructions:
This standard is proposed by China Chemical Equipment Corporation, and this standard is under the jurisdiction of the chemical machinery and equipment standardization technical unit of the Ministry of Chemical Industry. This standard is drafted by Jinxi Chemical Machinery Factory, and the Jilin Chemical Company Machinery Factory participated in the drafting. The main drafters of this standard are Sang Yabin, Gao Xiyuan, Shang Shiying, Tian Shijin, and Chen Xiong. From the date of implementation of this standard, the original standard HG5-1473-82 "Solid Alkali Boiler Technical Conditions" issued by the Ministry of Chemical Industry will be invalid. People's Republic of China
Chemical Industry Standard
Technical Conditions for Solid Soda Kettle
HG/T2386-92
Editor Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printer Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format 880×12301/16 Printing Sheet Word Count 6000 First Edition in July 1993
First Printing in July 1993
Print Quantity 1500
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