Cable manufacturer to discuss the production process and basic knowledge of all kinds of steel wire rope
Wire rope is used often by hoisting machinery and other transmission parts of important metal products.
According to the surface state, can be divided into smooth wire rope, galvanized steel wire rope, phosphating.
1, smooth, smooth is refers to the surface treatment is not galvanized wire rope, wire rope steel wire from 6.
5 mm line drawing into filaments, twist into a small unit first, and then small twist system synthetic rope.
Europeans in 1834 the London, invented the world's first cable (
Smooth steel wire rope)
, tianjin first wire rope factory is founded in 1939 the first metal products enterprise in our country, so far, our country has smooth steel wire rope in the production and use of more than 70 years.
Its technological process is: the wire rod - acid - washing to zinc series phosphating, washing and drying to cold drawing, heat treatment and pickling - water - zinc series phosphating to washing and drying, cold drawn to wire rope, stranding and steel reinforced - laying-up - inspection and packaging.
2 the galvanized steel wire, galvanized wire rope is 45 #, 65 #, 70 # quality carbon structural steel, such as drawing, and then the galvanized (
Electric galvanized or hot dip galvanized)
Galvanized steel wire surface smooth, bright and clean, no crack, sections, a thorn, scars and rust, galvanized layer uniform, strong adhesion, corrosion resistance, durable, excellent toughness and elasticity.
The technological process is: online - heat treatment - lead quenching head and shell device to wash in cold water, hydrochloric acid pickling to wash in cold water, sulfuric acid electrolytic activation to wash in cold water, galvanized plating bath to wash in cold water, hot water washing and drying to hydrogen - accept offline line banding - test assay and warehousing.
3, phosphating coating wire rope according to the classification of steel wire surface state, only smooth and galvanized steel wire rope, wire rope before phosphating coating steel wire rope is nearly two years of patent technology, the rope wire phosphating, preferred department or zinc manganese phosphating, steel wire after phosphating without any drawing processing, direct use of phosphating steel wire twisting wire rope, because of the phosphating coating surface of steel wire is more wear-resisting, use phosphating service life of wire rope is 2 - smooth steel wire rope
Three times, wire rope fatigue resistance increased significantly.
Process flow is: the wire rod - acid - washing to zinc series phosphating, washing and drying to cold drawing, heat treatment and pickling - water - zinc series phosphating to washing and drying, cold drawn to rope wire to alkaline cleaning, washing, acid - water - manganese series wear-resisting phosphate to washing and drying, stranding and steel reinforced - laying-up - inspection and packaging.
The smooth steel accounts for about 80% of the total output of wire rope, galvanized steel wire rope of the total output of teens, the rest for plastic coated wire and stainless steel wire rope.
According to the contact state of the adjacent layer of steel wire, steel wire rope can be divided into: contacts, line contact wire rope, wire rope in surface contact wire rope three basic structure forms.
According to the composition in the cross section of the stock form, the wire rope can be divided into round and special-shaped wire rope shares (
Alien strands wire rope is mainly include the triangle strands wire rope, elliptical strands wire rope and the fan strands wire rope)
According to the wire,
Surface state, can be divided into smooth steel wire, galvanized wire rope,
Wire rope and coating (
Plastic wire rope.
Contacts: shares in the adjacent layer of steel wire in the form of point contact, in addition to the center of steel wire, the layers of steel wire diameter equal, shares through layered twist system formed.
Line contact: shares in the adjacent layer of steel wire in the form of linear contact, strands of different diameter of wire as a twist.
Contact: shares in steel wire in the form of planar contact between adjacent layer.
Point and line contact wire rope: between adjacent layers within the wire in the form of dot, line two kinds of contact.
Shares by different times the diameter of the wire twisting.
Abnormity strands wire rope, special-shaped wire rope for its shares section is triangular, elliptic or fan.
Galvanized steel wire rope: to galvanized steel wire surface treatment (
Or galvanized after drawing)
, and then twist wire rope made of.