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Keywords: valve; bearing; classification coding; method description In the information age, coding is a representative of materials, the current major companies in the procurement and daily information processing with the material code instead of the name of the material, this is not only convenient and efficient but also conducive to the company Operation management. The following is a brief discussion on the method of encoding valves and bearings.
1 Valve Material Code Structure Introduction Valve material codes use 14-digit equal length digital codes. From left to right, the left and 2 bits represent the new generic class, represented by the code "30". The left 3 and 4 bits represent the one-level code, the left 5, 6 bits represent the secondary code, and the left 7 and 8 bits represent the third level. In the code, the left 9 and 10 digits represent the four-level code, and the last four represent the nominal diameter.
1.1 General valve code description 1 First-level name is the valve, share two codes, with "01";
2 The secondary name is the type of valve. It also uses two-digit code with the code from "01" to "99";
3 Three-level name According to the different classifications of transmission mode, connection mode, structure type, sealing surface material, and valve seat lining material, the two-digit code is still, and the code is from "01" to "99";
4 grade four named valve body material, engineering pressure, a total of two yards, code from "01" to "99";
The 5th level is called the nominal diameter. The common four-digit code indicates that there are less than four nominal diameters and the front code is supplemented by zero. For example, the DN200 butterfly valve's five-level code is 0200, DN1000's valve code is 1000;
6 When the two types of material models have the same specification, the common material is represented by the nominal diameter, and the special code is added to the nominal diameter. For example, the five-level code 0021 for the butterfly valve D371X-10 DN200 of the “long butterfly valve stem length 1700†is added, and the special five-digit code is incremented.
The following example illustrates the general valve coding method. Example 1: Valve D 341F46-10Q DN200
The code is 30010325080200
1.2 Other valve code descriptions Other valve type material codes use 14-digit equal length digital codes. The left and two digits represent the new generic class, represented by the code "30". The left 3 and 4 bits represent the one-level code, and the left 5 and 6 bits represent the secondary code. Some types of special and non-classifiable valve materials are placed in other classes in the third-level code. Refer to Table 3 for code representation. In the other categories, the classification of goods that can be classified, the four-grade code of the well-classified material is represented by a 2-digit code, and from “01-99â€, the four-level codes that cannot be classified in other classes are all “00â€. The last four digits are directly represented by serial numbers, from 0001-9999.
2 bearing material coding method 2.1 General bearing coding method 1 Bearing coding using hierarchical digital coding method, material coding with 15-digit digital code, is divided into four levels, the relationship between the topological relations between levels, the level decreases progressively;
2 The left and 2 digit codes represent the generic class code, represented by "30";
3 The left 3rd and 4th digits represent the primary name of the material and make a first-level code comparison table;
4 The left 5, 6 digit code represents the secondary name of the material, and the left 7 and 8 digit codes represent the tertiary name of the material. The second and third names are classified according to the parameters such as manufacturer and structure;
5 The left 9 thru 13th position represents the parameter position of the bearing, which is indicated directly by the bearing code. The left side of less than 5 bits is filled with "0";
The two last two codes represent the suffix name of the bearing. See the bearing suffix code comparison table.
The following is an example of the general import bearing coding method imported bearing FAG deep groove ball bearing iron seal type 6320 C3
The code is 303201010632006
2.2 Imported Bearings Annex Code Description 1 First-level name is imported bearings, a total of two codes, with "32";
2 Grade II bearing accessories, a total of two code, said the method see the first-level code comparison table;
3 Third-level names are classified according to the types and structures of attachments;
4 The last seven digits are coded as serial numbers from 0000001 to 9999999.
2.3 Other bearing code Description 1 The first level is called the imported bearing, a total of two codes, with "32", the representation method see the first-level code comparison table;
2 secondary name is other imported bearings, a total of two code, said the method see a code comparison table;
3 Third-level names are classified according to the types and structures of attachments;
4 The last seven digits are represented by serial numbers, from 0000001 to 9999999.
3 Benefits of the unified coding 1 The reintegration of materials will be re-integrated, and where appropriate, the increase or decrease of the materials will be scientifically categorized, making it easier to search for materials;
2 coding scientifically standardized material names;
3 coding is no longer a simple serial number, its code number has a specific meaning;
4 One code corresponds to one material, avoiding the repetition of material coding;
5 The coding method is easy to understand and easy to remember;
6 Coding is the basis of material sharing and plays a major role in revitalizing assets.
references:
[1] Zhang Xiaohua. Classification and coding of valve parts and the establishment and application of group technology [J]. Valve, 2016(03).
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Valve, bearing material coding method introduced
Abstract : Based on the actual situation, this paper analyzes the description and method comparison of a valve and bearing coding structure for reference.