CN104889353A - Continuous casting process of nickel coated copper composite materials - Google Patents

Abstract

The invention provides a continuous casting process of nickel coated copper composite materials. The continuous casting process comprises the following steps of smelting copper and nickel and performing heat preservation on a copper and nickel solution in a heat preservation furnace; step 2, performing nickel pipe forming which comprises enabling the nickel solution to pass through a graphite crystallizer to form a nickel pipe, wherein a graphite core of the graphite crystallizer is in a hollow shape; step 3, hollowly pouring the copper solution into the formed nickel pipe through the graphite core in a rotating magnetic field environment simultaneously, maintaining the billet drawing speed to be 50 to 60 millimeters every minute and the cooling water temperature to be 20 to 50 DEG C in the process of horizontal continuous casting, enabling the current frequency of an alternating induction coil to be 18 to 30 Hz and the current intensity of the alternating induction coil to be 100 A when the rotating magnetic field is applied and obtaining nickel coated copper continuous casting billet; step 4, performing oxidation cleaning; step 5, performing surface treatment; step 6, performing storage. According to the continuous casting process of the nickel coated copper composite materials, the nickel coated copper wires are firm in combination, the production process is simple, the wastewater is not produced in the production process, and the environment-friendly effect is achieved.

Description

A kind of nickel copper-clad composite continuous casting process

Technical field

The present invention relates to the manufacturing technique method of composite conducting metal, especially a kind of nickel copper-clad composite continuous casting process.

Background technology

Current internal copper nickel cladding wire production producer mainly adopts clad welded drawing to produce, and operation is many, and technological process is long, and yield rate is low, can only do the nickel copper-clad cladding wire rod of nickel copper-clad cable or less than 100 millimeters; Interface composites mode is that solid phase combines, and interface bond strength is low, and clad is uneven.And based on the research of Cu-base composites all based on small sample, but copper alloy application all needs the processing such as follow-up rolling drawing, this makes Cu-base composites apply to be extremely restricted.

Summary of the invention

In order to solve the problem of prior art, the invention provides a kind of nickel copper-clad composite continuous casting process, combining firm, that production technology simply, does not produce waste water, environmental protection effect to reach.

Patent of the present invention provides a kind of nickel copper-clad composite continuous casting process, comprises the following steps: 1) melting copper, nickel; Copper, nickel solution are incubated in holding furnace; 2) nickel pipe is shaping; 3) copper solution is poured in shaping nickel pipe; 4) oxidation cleaning; 5) surface treatment; 6) put in storage; Especially be:

1), melting copper: the copper of 99.7% is melted to 1100 DEG C ~ 1150 DEG C, puts into holding furnace;

Melting nickel: commercial nickel is melted to 1460 DEG C ~ 1500 DEG C, puts into holding furnace;

2), nickel solution is the graphite crystallizer of hollow form by graphite fuse, forms nickel pipe;

3), while step 2, copper solution is poured in shaping nickel pipe by graphite fuse hollow under rotating excitation field environment; And in horizontal casting process, maintenance casting speed is 50 ~ 60mm/min, coolant water temperature is 20 ~ 50 DEG C; When applying rotating excitation field, alternation induction coil power frequency is 18 ~ 30Hz, and current strength is 100A, obtains nickel copper-clad horizontal continuous casting billet;

4) oxidation cleaning: horizontal continuous casting billet is carried out surface oxide layer cleaning, brushes away surface oxide layer by multi-head brush handset;

5), surface treatment: passivating solution adopts chromic anhydride 1-5g/L, sulfuric acid 20-50g/L, nano silicon 0.5-2g/L, the solution of fluoboric acid 5-20g/L, and time 5-10min, temperature 20-40 DEG C is carried out surface passivating treatment;

6) put in storage: put in storage through treated good nickel copper-clad wire wrapping.

The beneficial effect that technical scheme provided by the invention is brought is: adopt graphite fuse to be the graphite crystallizer of hollow structure, realize copper nickel and cast continuously simultaneously, prepare the nickel copper-clad bar that interface cohesion is good.This techniqueflow is short, and cost is low, and can realize continuous seepage; Continuous casting prepares copper nickel composite material to reduce costs, large-sized composite of accomplishing scale production; And join creationary for rotating excitation field in the preparation of composite, thus obtain the wild phase of small and dispersed more, improve combination property.

Detailed description of the invention

For making content of the present invention clearly understandable, below content of the present invention is described further.Certain the present invention is not limited to this specific embodiment, and the general replacement known by those skilled in the art is also encompassed in protection scope of the present invention.

Above-mentioned and other technical characteristic and beneficial effect, will be described in detail to heating furnace air-flowing environment control system of the present invention in conjunction with the embodiments.

Embodiment

A kind of nickel copper-clad composite continuous casting process, comprises the following steps: 1) melting copper, nickel; Copper, nickel solution are incubated in holding furnace; 2) nickel pipe is shaping; 3) copper solution is poured in shaping nickel pipe; 4) oxidation cleaning; 5) surface treatment; 6) put in storage; Especially,

1), melting copper: the copper of 99.7% is melted to 1120 DEG C, puts into holding furnace;

Melting nickel: commercial nickel is melted to 1480 DEG C, puts into holding furnace;

2), nickel solution is the graphite crystallizer of hollow form by graphite fuse, forms nickel pipe;

3), while step 2, copper solution is poured in shaping nickel pipe by graphite fuse hollow under rotating excitation field environment; And in horizontal casting process, maintenance casting speed is 55mm/min, coolant water temperature is 30 DEG C; When applying rotating excitation field, alternation induction coil power frequency is 20Hz, and current strength is 100A, obtains nickel copper-clad horizontal continuous casting billet;

4) oxidation cleaning: horizontal continuous casting billet is carried out surface oxide layer cleaning, brushes away surface oxide layer by multi-head brush handset;

5), surface treatment: passivating solution adopts chromic anhydride 3g/L, sulfuric acid 30g/L, nano silicon 1g/L, the solution of fluoboric acid 15g/L, time 8min, and temperature 30 DEG C carries out surface passivating treatment;

6) put in storage: put in storage through treated good nickel copper-clad wire wrapping.

After applying rotating excitation field, copper is same axial location in the crystallizer of the upper and lower freezing interface of horizontal casting, eliminates because Action of Gravity Field causes bottom setting rate to be greater than top, finally to solidify the phenomenon that position disalignment moves.And rotating excitation field has obvious refining effect to copper nickel horizontal continuous casting billet solidified structure, the phenomenon that common horizontal continuous casting billet cross section microstructure is uneven can be eliminated.

Although the present invention essentially describes above embodiment, just come as an example to be described, and the present invention is not limited to this.Those of ordinary skill in the art can make multiple modification and application and not depart from the essential characteristics of embodiment.Such as, each parts that embodiment is shown in detail can be revised and run, to described modification with apply relevant difference and can think and be included in protection scope of the present invention that claims limit.

Embodiment involved in this description, its implication is that specially feature, structure or the characteristic described in conjunction with this embodiment comprises at least one embodiment of the present invention.These terms come across in description everywhere differ to establish a capital and relate to same embodiment.In addition, when describing special characteristic, structure or characteristic in conjunction with any embodiment, all think that it falls in the scope of these special characteristics, structure or the characteristic that those of ordinary skill in the art just can realize in conjunction with other embodiments.

Claims (1)

1. a nickel copper-clad composite continuous casting process, comprises the following steps: 1) melting copper, nickel; Copper, nickel solution are incubated in holding furnace; 2) nickel pipe is shaping; 3) copper solution is poured in shaping nickel pipe; 4) oxidation cleaning; 5) surface treatment; 6) put in storage; It is characterized in that:

1), melting copper: the copper of 99.7% is melted to 1100 DEG C ~ 1150 DEG C, puts into holding furnace;

Melting nickel: commercial nickel is melted to 1460 DEG C ~ 1500 DEG C, puts into holding furnace;

2), nickel solution is the graphite crystallizer of hollow form by graphite fuse, forms nickel pipe;

3), while step 2, copper solution is poured in shaping nickel pipe by graphite fuse hollow under rotating excitation field environment; And in horizontal casting process, maintenance casting speed is 50 ~ 60mm/min, coolant water temperature is 20 ~ 50 DEG C; When applying rotating excitation field, alternation induction coil power frequency is 18 ~ 30Hz, and current strength is 100A, obtains nickel copper-clad horizontal continuous casting billet;

4) oxidation cleaning: horizontal continuous casting billet is carried out surface oxide layer cleaning, brushes away surface oxide layer by multi-head brush handset;

5), surface treatment: passivating solution adopts chromic anhydride 1-5g/L, sulfuric acid 20-50g/L, nano silicon 0.5-2g/L, the solution of fluoboric acid 5-20g/L, and time 5-10min, temperature 20-40 DEG C is carried out surface passivating treatment;

6) put in storage: put in storage through treated good nickel copper-clad wire wrapping.