MHYV-1*4*7/0.52 Flame-retardant and explosion-proof cable for mining
Flame-retardant communication cable for mining - Mine communication cable, coal mine cable
Flame-retardant communication cable for mining - Mine communication cable, coal mine cable
Overview of the development of the wire and cable industry
General situation
The wire and cable industry is the second largest industry in China after the automotive industry, with product variety satisfaction rate and domestic market share both exceeding 90%. Worldwide, China's total output value of wire and cable has surpassed that of the United States, making it the world's largest producer of wire and cable. With the rapid development of China's wire and cable industry, the number of new enterprises continues to rise, and the overall technical level of the industry has been greatly improved.
The sustained and rapid growth of China's economy has provided a huge market space for cable products, causing the world to focus on the Chinese market. In just a few decades of reform and opening up, the huge production capacity formed by China's cable manufacturing industry has impressed the world. With the continuous expansion of China's power industry, data communication industry, urban rail transit industry, automobile industry, and shipbuilding industry, the demand for wire and cable will also grow rapidly, and the wire and cable industry still has huge development potential in the future.
In November 2008, in response to the global financial crisis, China decided to invest 4 trillion yuan to stimulate domestic demand, of which more than 40% was used for the construction and renovation of urban and rural power grids. The wire and cable industry once again had a good market opportunity, and wire and cable enterprises across the country seized the opportunity to meet the new round of urban and rural power grid construction and renovation.
Overview of the wire and cable manufacturing process
The manufacturing of wire and cable is completely different from the production methods of most electromechanical products. Electromechanical products usually adopt the method of assembling parts into components, and then multiple components into a single product, with products measured in units of sets or pieces. Wire and cable use length as the basic unit of measurement. All wire and cable start from conductor processing, and insulation, shielding, cabling, and sheathing are added layer by layer around the conductor to produce wire and cable products. The more complex the product structure, the more layers are superimposed.
Brief introduction to the cable manufacturing process flow
1. Process characteristics of wire and cable product manufacturing:
1. Large-length continuous superimposed combined production method
The large-length continuous superimposed combined production method has a global and controlling impact on wire and cable production, which involves and affects:
(1) Production process flow and equipment layout
The various equipment in the production workshop must be reasonably arranged according to the process flow required by the product, so that the semi-finished products at each stage flow sequentially. Equipment configuration must consider the balance of production capacity due to different production efficiencies. Some equipment may need to be configured with two or more units to balance the production capacity of the production line. Therefore, the reasonable selection and combination of equipment and the layout of the production site must be comprehensively considered based on the product and production volume.
(2) Production organization and management
Production organization and management must be scientific, reasonable, thorough, accurate, strict, and meticulous. Operators must strictly follow the process requirements. Any problem in any link will affect the smoothness of the process flow, product quality, and delivery. Especially for multi-core cables, if a certain pair or basic unit is short in length or has quality problems, the entire cable will be insufficient in length, resulting in scrapping. Conversely, if a certain unit is too long, it must be sawed off, causing waste. MHYV-1*3*7/0.37 mine communication cable
(3) Quality management
The production method of large-length continuous superimposed combination means that any problem occurring at any moment in any link of the production process will affect the quality of the entire cable. The more the quality defect occurs in the inner layer, and if it is not discovered in time to stop production, the greater the loss. Because the production of wire and cable is different from assembled products, which can be disassembled and reassembled and parts replaced; any quality problem in any component or process of wire and cable is almost irreparable and irreplaceable for the cable. Post-processing is very negative, either sawing short, downgrading, or scrapping the entire cable. It cannot be disassembled and reassembled.
Quality management of wire and cable must run through the entire production process. The quality management inspection department must conduct patrol inspections throughout the production process, operators self-inspect, and mutual inspections between upstream and downstream processes. This is an important guarantee and means to ensure product quality and improve the economic benefits of the enterprise.
