YIHETAI founded in december 2001,mainly specializes in the production of hook-up wires and wire-processing. It integrates research with production and marketing and has been possessed of the privilege of import and export at its own. Our company is a professional manufacturer of wiring of the interiors of various kinds of electronic appliance and their exterior hook-up wires. Its products mostly are applied to the products of telecommunication, photo-electricity and for consumers’uses.
The procession of making wire and cable :
Wire and cable wire products used to transmit electrical (magnetic) energy, information and electromagnetic energy conversion. The broad sense of wire and cable is also referred to as cable, the narrow sense of cable refers to the insulation cable, it can be defined as: by the following parts of the assembly; One or more insulated wires and their respective cladding, general protection and outer protection, the cable may also have an additional conductor without insulation.
Bare wire system products
The main features of this kind of products are: pure conductor metal, no insulation and sheath layer, such as steel core aluminum stranded wire, copper aluminum busbar, electric locomotive line, etc.; Processing technology is mainly pressure processing, such as smelting, calendering, drawing, stranding/pressing stranding, etc.; Products are mainly used in suburban, rural, user line, switch cabinet and so on.
Wire and cable
The main features of this product are: extruded (wound) insulating layer outside conductor, such as overhead insulated cable, or several cores stranded (corresponding to phase line, neutral line and ground line of power system), such as overhead insulated cable with more than two cores, or added sheath layer, such as plastic/rubber wire and cable. The main technology includes drawing, stranding, insulating extrusion (wrapping), cable forming, armoring and sheath extrusion, etc. The different process combinations of various products have certain differences.
The products are mainly used in the transmission of strong electric energy in the lines of generation, distribution, transmission, transformation and power supply, with large current (tens of ampere to thousands of ampere) and high voltage (220V to 35kV and above).
The types and sequence of wires and cables are as follows:
[1: type, use][2: conductor][3: insulation][4: inner sheath][5: structural characteristics][6: outer sheath or derivation]-[7: Characteristics of use]
Items 1-5 and 7 are represented by pinyin letters, polymer materials are represented by the first letter of the English name, and each item can be 1-2 letters; The sixth term is 1-3 numbers.
Principle of omission in models: Copper is the main conductor material used in wire and cable products, so the code name of copper core T should not be written, except for bare wire and bare conductor products. Bare wires and bare conductor products, power cables and electromagnetic cables are not listed in the category, and neither are wires and cables for electrical equipment and communication cables, but they are listed in the sub-category or series.
The seventh item is all kinds of special use occasions or additional special use requirements of the mark, in the "-" after the alphabetic alphabet mark. Sometimes this item is written first to highlight the item. Such as ZR- (flame retardant), NH- (fire resistant), WDZ- (low smoke halogen-free, enterprise standard), -TH (used in hot and humid areas), FY- (termite, enterprise standard) and so on.
Digital marking armoring outer layer or outer sheath
In metal pressure processing, the technical processing method of forcing the metal through the die (pressing wheel) under the action of external force, compressing the metal cross-sectional area and obtaining the required cross-sectional area shape and size is called metal drawing.
Drawing process is divided into single wire drawing and twisted drawing.
In order to improve the flexibility and integrity of wires and cables, more than two single wires are intertwined in the specified direction, which is called stranding.
Stranding process includes conductor stranding, cabling, weaving, steel wire armor and winding.
According to different performance requirements for wires and cables, special equipment is used to coat different materials on the outside of the conductor. Coating process points:
A. Extrusion: rubber, plastic, lead, aluminum and other materials.
B. Longitudinal package: rubber, wrinkled aluminum strip material.
C. Wrapping: Ribbon paper tape, mica tape, alkali free glass fiber tape, non-woven fabric, plastic tape, linear cotton yarn, silk and other fiber materials.
D. Dip coating: insulating paint, asphalt, etc.