Special-purpose chromium plating steel band of high-precision ultra-thin very-wide cold-rolled steel strip and shield of optical fibre cable and technology
Technical field
The present invention relates to a kind of high-precision ultra-thin very-wide cold-rolled steel strip and complete processing thereof, and chromium plating steel band and the manufacture craft thereof utilizing the high precision cold-rolled steel strip to produce in fiber optic cables, to be exclusively used in shielding.
Background technology
At present, the ultra-thin steel band of manufacturing all is to utilize the above cluster mill of six rollers to be rolled both at home and abroad, and adopt other utility appliance to improve its surface finish, but there is the cost height in the ultra-thin cold-rolled steel strip that adopts existing technology to make, shortcomings such as complex manufacturing technology and steel band plate shape difference.
In addition, have now in fiber optic cables use, what can play shielding effect is metallized film, but utilize metallized film to shield, shield effectiveness is bad.If can adopt the steel band of handling through chromium plating to shield, just can reach shield effectiveness preferably, but existing chromium plating steel plate can't reach the required requirement of shield of optical fibre cable.
Summary of the invention
For this reason, the high-precision ultra-thin very-wide cold-rolled steel strip among the present invention mainly is in order to solve problems such as existing cold-rolled steel strip production cost height, steel band plate shape difference, and existing chromium plating steel plate can't be used for the problem of shield of optical fibre cable.
The complete processing of high-precision ultra-thin very-wide cold-rolled steel strip among the present invention: at first hot-rolled billet is carried out surface treatment, then utilize major diameter four roller reversable cold-rolling machines with the high precision cold-rolled steel strip of the cold rolling one-tenth thickness of hot-rolled billet between 0.1 millimeter to 0.25 millimeter, again this high precision cold-rolled steel strip after cold rolling is carried out rewinding and skimming treatment, and this high precision cold-rolled steel strip after rewinding and skimming treatment is made clean annealing handle, last to utilize major diameter four roller reversable cold-rolling machines will carry out the second time through the high precision cold-rolled steel strip after for the first time cold rolling once more cold rolling, and the high-precision ultra-thin very-wide cold-rolled steel strip of cold rolling one-tenth thickness between 0.06 millimeter to 0.08 millimeter.
Wherein, adopt in described clean annealing treating processes that hydrogen content is 75%, a nitrogen content is that 25% the decomposed ammonia body high precision cold-rolled steel strip after to rewinding and skimming treatment is protected; guaranteeing the luminance brightness of steel strip surface, and guarantee not exist any oxide compound on its surface.
Wherein, described first time, cold-rolled process was the operation of rolling that adopts multi-pass, heavy reduction to combine with light reduction; Described second time, cold-rolled process then was to adopt to have the upper working rolls and lower working rolls of different convexitys, and further adopted the multi-pass operation of rolling of reasonable draught.
The special-purpose chromium plating steel band of shield of optical fibre cable that utilizes above-mentioned high precision cold-rolled steel strip to make after handling through rewinding and degreasing, clean annealing among the present invention includes a high precision cold-rolled steel strip, be formed with one deck weight on the surface of this high precision cold-rolled steel strip more than or equal to 20 milligrams every square metre metallic chromium layer, and be formed with a weight at the outside surface of this metallic chromium layer and between 1.5 to 6 milligrams every square metre, be coated with oil reservoir.
Utilize above-mentioned high precision steel band to handle the back and the complete processing of the shield of optical fibre cable special use chromium plating steel band made through rewinding and degreasing, clean annealing among the present invention: (1) carries out chemical degreasing to the high precision cold-rolled steel strip; (2) the high precision cold-rolled steel strip of doing after chemical degreasing is handled is cleaned; (3) the high precision cold-rolled steel strip after cleaning is made further electrolytic degreasing, remain in the grease on this high precision cold-rolled steel strip surface with removal; (4) the high precision cold-rolled steel strip after the electrolytic degreasing processing is made cleanup acid treatment, to guarantee there is not any oxide compound on this high precision cold-rolled steel strip surface; (5) carry out the chromium plating first time and handle making high precision cold-rolled steel strip after the cleanup acid treatment; (6) steel band that will do after chromium plating is for the first time handled cleans, and is convenient to remove the residue that remains in described steel strip surface; (7) steel band after work cleans in the 6th step is carried out the chromium plating second time, and form one deck weight more than or equal to the metallic chromium layer more than 20 milligrams in described steel strip surface; (8) steel band that will carry out after chromium plating is for the second time handled cleans once more and dries; (9) at last at the oil reservoir of steel strip surface coating one deck weight between 1.5 milligrams every square metre to 6 milligrams every square metre of doing after chromium plating is for the second time handled.
Wherein, before being made the chemical degreasing treatment step, the high precision cold-rolled steel strip earlier the height cold-rolled steel strip is done smooth processing, simultaneously, after electrolytic degreasing processing and cleanup acid treatment step, all add and once scrub process, thoroughly remove the moisture and the residue thereof on described high precision cold-rolled steel strip surface.
In addition, described chemical degreasing handle be with the high precision cold-rolled steel strip be placed on contain 5% remove oil-bound distemper, temperature is to soak in 80 ℃ of solution, removes the grease on described high precision cold-rolled steel strip surface about 90%; It is to handle through chemical degreasing and high precision cold-rolled steel strip after cleaning is placed on that sodium hydroxide is 3%, the sour sodium of grape grain is in 0.3% the solution that described electrolytic degreasing is handled, and the electric current that feeds 3000 amperes carries out electrolytic cleaning, removes the whole greases attached to described high precision cold-rolled steel strip surface; Described pickling is that the high precision cold-rolled steel strip after electrolytic degreasing is handled is placed on sulfuric acid is in 5% the acidic solution, and feeds 3000 amperes electric current and carry out electrolytic pickling, removes the oxide film and the activating surface on described high precision cold-rolled steel strip surface.
Utilize the complete processing of cold-rolled steel strip among the present invention can make the high-precision ultra-thin very-wide cold-rolled steel strip of thickness between 0.06 millimeter to 0.08 millimeter, the surface of this ultra-thin very-wide cold-rolled steel strip is comparatively smooth, plate shape is better, and it also has good mechanical property and accurate dimensions.This high-precision ultra-thin very-wide cold-rolled steel strip can be widely used in high-tech areas such as electronics, communication.
In addition, the present invention can become the chromium plating steel band that fiber optic cables inside is specifically designed to shielding with above-mentioned high precision steel band after chromium plating is handled, and has substituted existing metallized film as shielding material, and has had better shield effectiveness.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described in further detail.
Fig. 1 is the processing process figure of high-precision ultra-thin very-wide cold-rolled steel strip among the present invention;
Fig. 2 is the processing process figure of the special-purpose chromium plating steel band of shield of optical fibre cable among the present invention.
Embodiment
As shown in Figure 1, the course of processing of high-precision ultra-thin very-wide cold-rolled steel strip is as follows among the present invention: at first get thickness and be 3 millimeters, width and be 600 millimeters hot-rolled billet, this hot-rolled billet is positioned over immersion treatment in 10% the hydrochloric acid soln, utilizes hydrochloric acid to remove the oxide compound on hot-rolled billet surface; To be somebody's turn to do the major diameter four roller reversable cold-rolling machines of opening through too high stiffness, big rolling load, stability height through the hot-rolled billet of persalt processing again, utilize this four rollers reversable cold-rolling machine that hot-rolled billet is carried out the mode that multi-pass, heavy reduction combine with light reduction and be rolled, obtain thickness and be 0.25 millimeter, width and be 600 millimeters high precision cold-rolled steel strip; Then this high precision cold-rolled steel strip is carried out rewinding and skimming treatment, and the high precision cold-rolled steel strip that will be somebody's turn to do after rewinding and skimming treatment is done the clean annealing processing, adopt in this clean annealing treating processes that hydrogen content is 75%, a nitrogen content is that 25% decomposed ammonia body is protected above-mentioned high precision cold-rolled steel strip, guarantee the bright degree on this high precision cold-rolled steel strip surface and guarantee not have any oxide compound, improved the quality of steel strip surface greatly on its surface; The last four roller reversable cold-rolling machines that utilize once more carry out secondary cold-rolling to the steel band of handling through clean annealing, obtain thickness and be 0.08 millimeter, width and be 600 millimeters high-precision ultra-thin very-wide cold-rolled steel strip.Adopt upper working rolls and lower working rolls that has different convexitys and repeatedly rolling mode in the cold-rolled process with reasonable draught in the second time.
As shown in Figure 2, to make thickness in the above-mentioned cold-rolled steel strip complete processing be that 0.25 millimeter high precision cold-rolled steel strip is made the chromium plating steel band that following each step process can obtain a kind of shield of optical fibre cable special use with utilizing, this chromium plating steel band is that to form one deck weight on high precision cold-rolled steel strip surface be 20 milligrams every square metre metallic chromium layer, and to form one deck weight at the outside surface of this metallic chromium layer be 5 milligrams every square metre the oil reservoir that is coated with.
The procedure of processing of the chromium plating steel band of shield of optical fibre cable special use is as follows:
(1) the high precision cold-rolled steel strip is done carry out smooth processing behind rewinding and degreasing, the clean annealing;
(2) will be immersed in temperature through the high precision cold-rolled steel strip of smooth processing is 80 ℃, 5% remove and to carry out chemical degreasing in the oil-bound distemper solution and handle, to remove the grease of steel strip surface about 90%;
(3) the high precision cold-rolled steel strip that will do the chemical degreasing processing cleans;
(4) the high precision cold-rolled steel strip after cleaning is positioned in 3% sodium hydroxide, 0.3% the grape grain acid sodium solution, and feeds 3000 amperes electric current and carry out electrolytic degreasing, remove all greases of described high precision cold-rolled steel strip surface;
(5) the high precision cold-rolled steel strip that carries out after electrolytic degreasing is handled is scrubbed, removed owing to electrolytic degreasing is handled moisture and the electrolysis residue that remains in high precision cold-rolled steel strip surface;
(6) to make electrolytic degreasing and scrub after the high precision cold-rolled steel strip place 5% sulphuric acid soln, and feed 3000 amperes electric current, carry out electrolytic pickling and handle, to guarantee not have any oxide film and activating surface on high precision cold-rolled steel strip surface;
(7) carry out secondary and scrub making high precision cold-rolled steel strip after the pickling, scrub process by this and not only can thoroughly remove the moisture and the residue on high precision cold-rolled steel strip surface, and can remove the part pickling materials that remain in this high precision cold-rolled steel strip surface;
(8) the high precision cold-rolled steel strip of doing pickling, scrub after the processing is for the second time carried out chromium plating processing first time;
(9) the high precision cold-rolled steel strip that will do after chromium plating is for the first time handled cleans, and removes the residue that remains in steel strip surface;
(10) steel band after work cleans in the 9th step is carried out the chromium plating second time, and form the metallic chromium layer that one deck weight equals 20 milligrams every square metre in steel strip surface;
(11) steel band that will carry out secondary chromium plating processing cleans once more and dries;
(12) the steel strip surface coating one deck weight after doing secondary chromium plating processing is 5 milligrams every square metre oil reservoir.
Utilize above-mentioned complete processing can make the high-precision ultra-thin very-wide cold-rolled steel strip of thickness between 0.06 to 0.08 millimeter, this ultra-thin very-wide cold-rolled steel strip also has good mechanical property and accurate dimensions when its surface is comparatively smooth.This high-precision ultra-thin very-wide cold-rolled steel strip can be widely used in high-tech areas such as electronics, communication.Further utilize the subsequent step of above-mentioned complete processing, can make and in fiber optic cables, be used to the chromium plating steel band that shields, utilize this kind chromium plating steel band to substitute existing metallized film, can obtain better shield effectiveness as shielding material.
In addition, above-mentionedly only the specific embodiment among the present invention is illustrated, can not be as protection scope of the present invention, every equivalence of having done according to the design spirit among the present invention changes or modifies, and all should think to fall into protection scope of the present invention.