CN102899594A - Manufacturing method of aluminum foil used for 1060 alloy cable - Google Patents

Abstract

The invention relates to a manufacturing method of aluminum foil used for a 1060 alloy cable. The manufacturing method sequentially comprises the following steps: a. smelting; b. roll casting, controlling the thickness to be 6.8-7.0mm; c. cold rolling and cogging, rolling the thickness to be 3.0-4.0mm; d. intermediate annealing at 500-550 DEG C, and lasting for 20-24h; e. roughing, roughing the thickness to be 0.5mm for longitudinal edge shearing; f. finish rolling, after 2-3 passes, rolling to obtain a finished product with the thickness of 0.18-0.2mm; and g. finished product annealing, adopting a gradient differential temperature annealing method for a low-temperature purging period at 200-220 DEG C with the heat preservation time of 2-4h, an intermediate-temperature oil removal period at 240-260 DEG C with the heat preservation time of 8-10h, and a high-temperature yellow spot removal and mechanical property stabilizing period at 380-400 DEG C with the heat preservation time of 8-10h. The manufacturing method is simple in manufacturing process and low in cost, and can enable the elongation to be greater than or equal to 23% simultaneously when obtaining low tensile strength and completely meet the parameter requirements for the aluminum foil used for high-quality cables.

Description

The 1060 alloy cables manufacture method of aluminium foil

Technical field

The present invention relates to the manufacturing of aluminum alloy materials, specifically a kind of 1060 alloy cables manufacture method of aluminium foil.

Background technology

For aluminum foil for electric cable, better performance perameter is usually: tensile strength 70-110MPa, unit elongation is greater than 20%.Usually adopt at present 8011 alloys as the material of aluminum foil for electric cable, although but adopt the aluminum foil for electric cable unit elongation of 8011 alloy materials can satisfy service requirements, but its tensile strength is usually at 110-120MPa, manufacturing process can reach 100 MPa preferably, but still can't satisfy higher service requirements.And the cost of 8011 alloy materials is also higher.For 1060 alloys, the aluminium foil that adopts common processing method to make, its tensile strength can satisfy the requirement of aluminum foil for electric cable, but its unit elongation is too low, usually can only reach 15-20%, can't be used as aluminum foil for electric cable.

Summary of the invention

Technical problem solved by the invention is that a kind of manufacture method that can make with 1060 alloy materials aluminum foil for electric cable, tensile strength and the 1060 alloy cables usefulness aluminium foil that the unit elongation performance can meet the demands, cost is low is provided.

1060 alloy cables of the present invention may further comprise the steps successively with the manufacture method of aluminium foil:

A. melting adopts 1060 alloy materials to carry out melting;

B. casting, the casting finished product thickness is controlled at 6.8-7.0mm;

C. cold rolling cogging, blank temperature be upper milling train production during less than 40 ℃, is rolled down to 3.0-4.0mm thickness;

D. process annealing is set in 500-550 ℃ with furnace gas temperature, keeps after furnace gas temperature reaches design temperature 20-24 hour, opens other cooling system after insulation finishes and lowers the temperature, and treats that furnace gas temperature is down to below 200 ℃ to come out of the stove the rear naturally cooling of coming out of the stove;

E. roughing is carried out roughing after the material volume temperature after the process annealing is down to below 40 ℃, and roughing to 0.5mm thickness carries out slitting and cuts edge;

F. finish rolling, 2-3 passage of process is rolled down to the finished product of 0.18-0.2mm thickness;

G. finished products adopts ladder differential temperature annealing way, 200-220 ℃ of low temperature purge section, and soaking time 2-4 hour, 240-260 ℃ of middle temperature oil removing section, soaking time 8-10h, high temperature is except macula lutea and stablize 380-400 ℃ of mechanical property section, soaking time 8-10h.

The present invention adopts 1060 alloy materials to make aluminum foil for electric cable, its manufacturing process is simple, cost is low, simultaneously by special technique setting, can be when obtaining low tensile strength, unit elongation is more than or equal to 23%, hardness is finished the parameter request that can satisfy high-quality aluminum foil for electric cable less than 23HV.

Embodiment

The step of the embodiment of the invention is as follows:

1, melting

1060 fine aluminium ingots are adopted in melting, must accomplish degasification, slagging-off totally, stir full and uniform; Leading furnace temperature is controlled in the 720-740 ℃ of scope; Fusion process does not add master alloy and other metal additives, guarantees melt quality.

2, casting

When casting is produced, guarantee that the surface is without defectives such as black silk secret note, hole, slag inclusion, scratch, scuffings.The casting finished product thickness is controlled at 6.8-7.0mm, for follow-up rolling process distributes rational rolling pass and arranges suitable annealing thickness to prepare.Casting volume end face must not influential use staggered floor, lack aluminium, cold limit phenomenon; Produce good casting volume and must be placed on above the pallet, do not allow to be placed directly on the ground.

3, cogging

Must check the work roll surface quality during cold rolling cogging, guarantee to wipe clearly the deflector roll guide passage and check whether each deflector roll rotates flexibly without defectives such as scuffing and hard defects, avoid causing wiping scratching; Aluminium volume surface does not allow elongated or discontinuity scratch, scuffing, hard defects etc. that the surface imperfection of feel is arranged during cogging; The surface purging must be clean, do not allowed residual greasy dirt; Blank temperature must be less than milling train production on 40 ℃ of ability during cogging; Turn the homogenizing annealing operation when being rolled down to 3.5mm thickness, must will expect that volume is urgent with 3 and above steel band before the transhipment, avoid in the transport process material to roll up loose layer.

4, process annealing

To expect that the upper high-order bin of volume adopts the long-time homogenizing annealing of high temperature, furnace gas temperature is set in 530 ℃, the employing full power heats up, after reaching design temperature, furnace gas temperature kept 22 hours, opening other cooling system after insulation finishes lowers the temperature, treat that furnace gas temperature is down to below 200 ℃ and come out of the stove that the whereabouts ground surface adhesion of the material volume condition of high temperature is avoided in the rear stock shelf cooling of coming out of the stove.

5, roughing

After being down to below 40 ℃, the volume of the material behind homogenizing annealing temperature carries out roughing, must more renew working roll before the roughing, guarantee that roller surface is without scar, clear wiping deflector roll guide passage also checks whether each deflector roll rotates flexibly, avoid causing the surface to wipe the defectives such as scuffing, roughing to 0.5mm thickness carries out the centre and cuts edge.

6, slitting is cut edge

Slitting carries out expecting when cut edge in the centre that the volume temperature must can go up machine production below 40 ℃, in the production process supplied materials surface and plate shape are checked, and guarantee that this operation does not produce new defective, monolateral side cut width is at 10-50mm, guarantee that end face is neat, without raw edges, burr, flange, staggered floor, turriform etc.

7, finish rolling

Work in-process after slitting is cut edge are rolled down to the finished product of 0.18mm thickness through 3 passages, finished product must guarantee that plate shape is smooth, be beneficial to minute cutting process production, the surface purges clean, avoid surface band oil to cause finished products to produce macula lutea more, whenever be rolled into product and must check surface quality, guarantee that the surface is without defectives such as bright line, aberration, black silk secret note, wiping scuffing, hole, slag inclusions.

8, finished product is cut

Conscientiously supplied materials is checked when cutting, avoid defective to bring the finished product volume into, and wipe clearly each deflector roll guide passage, guarantee that aluminium volume surface is without impression, sticking aluminium, scratch, scuffing.

Monolateral side cut width is at 10-30mm when cutting, and guarantees that cutting staggered floor must be less than 0.5mm without burr, turriform, flounce, the little broken sea of limit section etc.Rouleau end face after cutting must be clean, clean and tidy; The rice number is as the criterion length tolerance+30/-0 rice with meter counter.Divide the rouleau that cuts to number in order, and lot number and specification are write with chalk at the end face of aluminium volume; The examination paper that minute cuts must be firm with three high temperature foil tape seals, prevents from annealing loose.Annealing material rest is waited to anneal on the rouleau after cutting.

9, finished products

For guaranteeing that material volume surface is without band oil, without macula lutea, surface swabbing A level, finished products adopts ladder differential temperature annealing way, 200-220 ℃ of low temperature purge section, soaking time 2-4 hour, 240-260 ℃ of middle temperature oil removing section, soaking time 8-10h, high temperature is except macula lutea and stablize 380-400 ℃ of mechanical property section, soaking time 8-10h, open other cooling system after finishing and cool off, the band furnace gas temperature is down to and is opened fire door below 200 ℃ and come out of the stove.

10, Performance Detection

Detecting the mechanical property result is: tensile strength 70-90MPa, unit elongation are more than or equal to 23%, and hardness is less than 23HV.

Claims (1)

1. an alloy cable is characterized in that with the manufacture method of aluminium foil: may further comprise the steps successively,

A. melting adopts 1060 alloy materials to carry out melting;

B. casting, the casting finished product thickness is controlled at 6.8-7.0mm;

C. cold rolling cogging, blank temperature be upper milling train production during less than 40 ℃, is rolled down to 3.0-4.0mm thickness;

D. process annealing is set in 500-550 ℃ with furnace gas temperature, keeps after furnace gas temperature reaches design temperature 20-24 hour, opens other cooling system after insulation finishes and lowers the temperature, and treats that furnace gas temperature is down to below 200 ℃ to come out of the stove the rear naturally cooling of coming out of the stove;

E. roughing is carried out roughing after the material volume temperature after the process annealing is down to below 40 ℃, and roughing to 0.5mm thickness carries out slitting and cuts edge;

F. finish rolling, 2-3 passage of process is rolled down to the finished product of 0.18-0.2mm thickness;

G. finished products adopts ladder differential temperature annealing way, 200-220 ℃ of low temperature purge section, and soaking time 2-4 hour, 240-260 ℃ of middle temperature oil removing section, soaking time 8-10h, high temperature is except macula lutea and stablize 380-400 ℃ of mechanical property section, soaking time 8-10h.