China's "Standardization Law" law, the production of products without national standards and industry standards, companies should develop standards for the enterprise, as the organization of production. In a market economy, the wire and cable development of new products quickly, often these products are no national standards or industry standards, which requires companies under the new product development and market demand, the development of the enterprise product standards, as the organization of production and quality controlled basis.
How can standards of wire and cable business, more scientific and more reasonable it?
First, the structure of the standard layout, divided to a reasonable level
Standard structure, namely the standard "skeleton", mainly to consider the relationship between global and local. Standard text should include several parts, each part of what should be required, in the development of pre-planning before the standard is good, do a few chest. Otherwise, the standard will be haphazard development, primary and secondary, regardless of "disorderly words," to the future implementation of the standards difficult.
For example, some enterprises in the development of "rated voltage 0.6 / 1 kV plastic insulated control cable" corporate standards, the PVC insulation, polyethylene insulation, XLPE insulation, all of the preparation of several control cables in a standard, in the description different insulation requirements and test projects haphazard process in the implementation of the standard is very inconvenient. Therefore, a case like this series of standards should be divided into several parts. Under the sub-standard in the same order of several independent parts. For example: Part 1: General requirements; Part 2: Rated voltage 0.6 / 1 kV PVC insulated control cable ... ... and so on, so the standard level at a glance, the relationship between the various parts can be out of step by step presentation.
Second, accurate and reasonable reference standard
"Reference standard" refers to the preparation of standards, some of the content on other provisions in the current standard, we refer to this as long as the current standard number, name, instead of its specific provisions, without having to repeat the copy in the current standards the specific content. Conversely, if the specific content of this standard copied into the enterprise standard, not known as the "reference standard, do not need to be included in the List of reference standards. In the preparation of corporate standards, the standard should be marked release date (year number) to the quotation . prepared a list of reference standards, the guide words to write. in reference to series standards, which parts should be clearly referenced.
For example: GB 12666.1-90 wire and cable fire test method Part 1 General Provisions; GB 12666.2-90 wire and cable fire test method Part 2 single wire or cable vertical combustion test method. To save space, may be appropriate to simplify, for example, can be simplified to: GB 12666.1 ~ 12666.2-90 wire and cable fire test method. Should not be simplified as: GB 12666-90 wire and cable fire test method, because there is no explicit reference to this series of standards which several parts, will create difficulties for future implementation.
Standards to be cited for a chapter, a one, or direct reference to this chapter (section), or every word this chapter (Article) copy the contents up. Otherwise, there is no reference to the other content, in contradiction with corporate standards. Reference standard according to the order of the first mainland China International (outside), after the first trumpet large order.
Third, the technical indicators you sure you want clear, reasonable
1. Technical specifications to be complete, need to test the technical specifications necessary to set the tolerance limit the scope or technical requirements of enterprise standard is to develop standards in the core, it should meet the performance requirements and product quality requirements, the preparation of the product should be fully considered requirements and the basic property requirements. Technical indicators to be complete, not missing items, the technical specifications of the required inspection provisions of tolerance to the range or limit.
For example, a company scheduled "Rare Earth Rare Earth aluminum wire and steel core aluminum stranded" corporate standards, not only in the rare earth content of aluminum wire for the number of specific provisions and did not provide anti-corrosion leads the pilot project. Scheduled an enterprise "low halogen low smoke flame retardant power cables," corporate standards, only requires burning test and tests for determining the amount of halogen acid gas, but does not require burning, smoke density test and minimum transmission rate index; indicators of resistance value is not clear that it is the lower limit, etc., so that the scheduled level of quality is poor business standards, strict control of product quality will not achieve the role, but also to the future implementation difficult.
2. On the product process requirements may be appropriate based on the actual situation of enterprises into the enterprise standard as the basis for production control in the development of national standards, taking into account the general performance standards, product process requirements are generally not listed. The development of enterprise standards, processes that affect product quality requirements, can be properly integrated into the enterprise standard, it is the business to ensure product quality, internal quality control and improve the market competitiveness of production is one important means.
For example: business scheduled "halogen-free flame retardant power cable" corporate standards, may require the use of insulated core gap filling out forms based on different requirements of cross-linked cables may require the use of vapor crosslinking, dry crosslinked or radiation crosslinking production process, for the rated voltage of 6 kV and above XLPE power cable can provide for the other three co-extruded manufacturing process, the enterprise must have a standard content development characteristics, it would enhance the market for enterprise products competitiveness.
3. Technical requirements of indicators can be detected to determine the principles to be followed
Technical requirements of a target is confirmed, we must consider the appropriate test methods, and reasonable in order to develop advanced technical indicators, measurement standards officers have to seek staff views of quality inspection personnel, technical specifications should be established for each one correspondence test or inspection methods. Detection of product characteristics, test methods or testing the value to be matched with the quality characteristics, synchronization, and the detection (inspection) instruments to clearly define the accuracy level.
For example: in the development of enterprise standards concentric conductor power cable with concentric conductor shield to consider inhibition factor test method; the development of rare earth rare earth aluminum wire and aluminum wire steel core enterprise standard to consider the determination of rare-earth methods.
4. Shall not reduce the mandatory national standards or industry standards
Mandatory standards are standards that must be performed, any enterprise, unit production and sales may not meet the mandatory standards. Some enterprises in order to save testing equipment, production management, investment, free to reduce the national standards, industry standards, it is not allowed. Such as the development of five core power cable, power cable with concentric conductor shield and other enterprise standards, its basic performance indicators to be consistent with GB 12706.1 ~ 12706.3-1991 "and below the rated voltage of 35 kV Copper or aluminum conductor plastic insulated power cables" mandatory national standards requirements; develop flat elastomer sheathed elevator business standards, the basic performance indicators should be consistent with GB 5013.5-1997 "rated voltage 450/750 V and below 5 parts Rubber insulated cables; elevator cable" mandatory national standards. The special requirements of the cable must also be provided. That do not have some test equipment or equipment of the enterprises, should also impact the quality of the product into the preparation of the technical requirements of the project Zanbu with test conditions, samples can be sent to the State Quality Supervision and Testing Center for wire and cable, or other relevant quality inspection supervision and inspection authorities to ensure the quality of products produced to meet the functional requirements of users. Such as the development of nuclear power plants with nuclear grade standards for cable companies, should consider the qualification test such as thermal aging life.
Fourth, wire and cable product model and name of the fix should be consistent with the practice of wire and cable industry
Wire and cable products currently on the market model and name of the writing were very irregular, often due to a number of business enterprises in the standards fixed for the product model name caused the preparation of non-standard. General wire and cable product model and name of the establishment shall be in accordance with the practice of wire and cable industry, arranged in the following way:
1. Class uses; 2. Conductor; 3. Insulation; 4. The protection layer; 5. Structure; 6. Outer sheath; 7. Derived.
Of which: 1 ~ 5 to Chinese phonetic letters (requires simple), 6 ~ 7 for general use Arabic numerals. Outer sheath of the code should be consistent with GB 2952-1989 "cable outer sheath" standards. Refer to the specific time of writing, "Wire and Cable Handbook" and related wire and cable country (industry) standard classification. Unless the special requirements of export or user, the general model of foreign standards should not be used in the preparation method, in order to avoid misunderstanding the user.
Fifth, enterprises should pay attention to test the rules of standard written
Inspection rules is the quality of the product features to determine the compliance indicators ways and means adopted uniform regulations. Production enterprises, the quality supervision departments and the user units to determine whether the product is qualified to abide by the basic criteria. Should primarily include the following: classification and testing projects, the group approved and sampling, test results and re-inspection to determine the rules.
In the development of corporate standards, not one-sided reference to GB 2828-1987 "batch inspection Sampling procedures and sample forms" and GB 2829-1987 "Periodic Inspection Sampling procedures and sample forms." Because these two standards are set by the Ministry of Electronics Industry, mainly for mass production of electronic products, sample testing, so the wire and cable manufacturers have flexible applications. Standard is the enterprise as businesses develop and implement their own standards, according to the characteristics of the business written in the standard group in the direct grant, the number of samples, test items, determine the specific content of rules, so very convenient to operate, but also no longer need to develop Other rules for accompanying the implementation of product testing. Finally, it should be noted that product standards must be reported to the local government administrative department of standardization and related administrative departments for the record, if not for the record up for product standards, from a legal sense are non-standard products.