阅读说明：本技术 一种铜合金异型带材控温铸型连铸直接成形工艺 (Temperature-controlled casting mold continuous casting direct forming process for copper alloy special-shaped strip ) 是由 周荣和 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种铜合金异型带材控温铸型连铸直接成形工艺,包括以下步骤：配料：称取无氧铜、硅、锰、锡、锌、钛、钼、钴、钨、钇、纳米耐磨粒子、过渡金属,进行混合得到混合配料；铜合金异型带材控温铸型连铸温度场模拟：采用 ProE 软件建立包含熔炼坩埚、铸型、异型带材和水冷铜套在内的三维几何模型,通过 ProCast 软件对模型进行网格划分及异型带材连铸的稳态温度场进行模拟计算；采用控温铸型连铸技术制备铜合金异型带材,通过控制连铸过程中的温度梯度、凝固速度、连铸速度及铸型温度来调控组织结构和表面质量。本发明的工艺流程短,生产成本低,产品表面质量好,性能优异。(The invention discloses a temperature-controlled casting mold continuous casting direct forming process for a copper alloy special-shaped strip, which comprises the following steps of: preparing materials: weighing oxygen-free copper, silicon, manganese, tin, zinc, titanium, molybdenum, cobalt, tungsten, yttrium, nano wear-resistant particles and transition metal, and mixing to obtain a mixed ingredient; simulation of the temperature field of the temperature-controlled casting mold of the copper alloy special-shaped strip: establishing a three-dimensional geometric model including a smelting crucible, a casting mold, a special-shaped strip and a water-cooling copper sleeve by adopting ProE software, and performing grid division on the model and simulation calculation on a steady-state temperature field of continuous casting of the special-shaped strip by using ProCast software; the copper alloy special-shaped strip is prepared by adopting a temperature-controlled casting mould continuous casting technology, and the tissue structure and the surface quality are regulated and controlled by controlling the temperature gradient, the solidification speed, the continuous casting speed and the casting mould temperature in the continuous casting process. The invention has the advantages of short process flow, low production cost, good product surface quality and excellent performance.)

1. A temperature-controlled casting mold continuous casting direct forming process for a copper alloy special-shaped strip is characterized by comprising the following steps of:

(1) preparing materials: weighing 68-75 parts of oxygen-free copper, 2.5-4.5 parts of silicon, 5-7 parts of manganese, 1-3 parts of tin, 5-15 parts of zinc, 3-8 parts of titanium, 0.5-1 part of molybdenum, 0.1-0.5 part of cobalt, 0.01-0.05 part of tungsten, 0.02-0.08 part of yttrium, 0.01-0.05 part of nano wear-resistant particles and 0.03-0.09 part of transition metal, and mixing to obtain a mixed ingredient;

(2) simulation of the temperature field of the temperature-controlled casting mold of the copper alloy special-shaped strip: establishing a three-dimensional geometric model including a smelting crucible, a casting mold, a special-shaped strip and a water-cooling copper sleeve by adopting ProE software, and performing grid division on the model and simulation calculation on a steady-state temperature field of continuous casting of the special-shaped strip by using ProCast software;

(3) the copper alloy special-shaped strip is prepared by adopting a temperature-controlled casting mould continuous casting technology, and the tissue structure and the surface quality are regulated and controlled by controlling the temperature gradient, the solidification speed, the continuous casting speed and the casting mould temperature in the continuous casting process.

2. The temperature-controlled mold continuous casting direct forming process of the copper alloy profiled strip as claimed in claim 1, wherein the nano wear-resistant particles are nano silicon carbide particles.

3. The process of claim 1, wherein the transition metal is rhenium.

4. The temperature-controlled casting mold continuous casting direct forming process of the copper alloy special-shaped strip as claimed in claim 2, wherein the particle size of the nano silicon carbide particles is 50-200 nm.

5. The temperature-controlled mold continuous casting direct forming process of the copper alloy profiled strip as claimed in claim 1, characterized in that the simulation calculation in the step (2): analyzing the temperature field and the heat transfer behavior of the special-shaped strip in the process of temperature-controlled casting mold continuous casting to obtain the influence rule of the temperature-controlled casting mold structure, the temperature gradient, the solidification speed, the continuous casting speed and the casting mold temperature on the temperature field when the copper alloy special-shaped strip is solidified, and optimizing the technological parameters of the temperature-controlled casting mold continuous casting for preparing the copper alloy special-shaped strip.

6. The temperature-controlled mold continuous casting and direct forming process for the copper alloy special-shaped strip according to claim 1, wherein the continuous casting speed is 100-400 mm/min, and the mold temperature is 1100-1300 ℃.

7. The temperature-controlled mold continuous casting and direct forming process for the copper alloy special-shaped strip according to claim 1, characterized in that the solidification speed is 600-800 ℃.

8. The process of claim 1, wherein the temperature is increased at the time of casting with a temperature gradient between 10 ℃/min and 25 ℃/min.

9. The temperature-controlled mold continuous casting direct forming process of the copper alloy special-shaped strip according to claim 1, characterized in that the temperature reduction during solidification is performed with a temperature gradient between 10 ℃/min and 1 ℃/min.

Technical Field

The invention relates to the technical field of continuous casting, in particular to a temperature-controlled casting direct forming process for a copper alloy special-shaped strip.

Background

The processing of the copper alloy special-shaped strip is a novel industry in China, and has great market potential and wide development prospect. With the rapid development of the electronic industry, the integrated circuit puts higher requirements on the preparation technology of the copper alloy special-shaped strip. At present, the copper alloy special-shaped strip is mainly produced by the following three traditional methods: firstly, adopting a process of semi-continuous casting blank, homogenizing annealing, hot rolling, solution quenching, strip blank surface milling, cold medium rolling, annealing, finish rolling and aging; secondly, the process of 'drawing up a continuous casting rod blank, continuously extruding, roughly rolling, annealing, medium rolling, annealing, finish rolling and aging'; the third is the 'continuous casting strip blank-cold rolling-intermediate annealing' process, which also comprises the procedures of peeling, acid cleaning and the like, and the methods have a series of problems of uneven casting blank structure, transverse columnar crystal structure, more pore defects, long process flow, low yield, high cost, difficult product performance meeting the use requirements and the like.

Disclosure of Invention

The technical problem mainly solved by the invention is to provide a temperature-controlled casting mold direct forming process for a copper alloy special-shaped strip, which has the advantages of short process flow, low production cost, excellent preparation performance, high dimensional precision, high density, columnar crystal structure, good mechanical property and good conductivity.

In order to solve the technical problems, the invention adopts a technical scheme that: the temperature-controlled casting mold continuous casting direct forming process for the copper alloy special-shaped strip comprises the following steps of: (1) preparing materials: weighing 68-75 parts of oxygen-free copper, 2.5-4.5 parts of silicon, 5-7 parts of manganese, 1-3 parts of tin, 5-15 parts of zinc, 3-8 parts of titanium, 0.5-1 part of molybdenum, 0.1-0.5 part of cobalt, 0.01-0.05 part of tungsten, 0.02-0.08 part of yttrium, 0.01-0.05 part of nano wear-resistant particles and 0.03-0.09 part of transition metal, and mixing to obtain a mixed ingredient;

(2) simulation of the temperature field of the temperature-controlled casting mold of the copper alloy special-shaped strip: establishing a three-dimensional geometric model including a smelting crucible, a casting mold, a special-shaped strip and a water-cooling copper sleeve by adopting ProE software, and performing grid division on the model and simulation calculation on a steady-state temperature field of continuous casting of the special-shaped strip by using ProCast software;

(3) the copper alloy special-shaped strip is prepared by adopting a temperature-controlled casting mould continuous casting technology, and the tissue structure and the surface quality are regulated and controlled by controlling the temperature gradient, the solidification speed, the continuous casting speed and the casting mould temperature in the continuous casting process.

In a preferred embodiment of the present invention, the nano wear-resistant particles are nano silicon carbide particles.

In a preferred embodiment of the invention, the transition metal is rhenium.

In a preferred embodiment of the present invention, the nano silicon carbide particles have a particle size of 50 to 200 nm.

In a preferred embodiment of the present invention, the simulation in step (2) calculates: analyzing the temperature field and the heat transfer behavior of the special-shaped strip in the process of temperature-controlled casting mold continuous casting to obtain the influence rule of the temperature-controlled casting mold structure, the temperature gradient, the solidification speed, the continuous casting speed and the casting mold temperature on the temperature field when the copper alloy special-shaped strip is solidified, and optimizing the technological parameters of the temperature-controlled casting mold continuous casting for preparing the copper alloy special-shaped strip.

In a preferred embodiment of the present invention, the continuous casting speed is 100 to 400mm/min, and the casting temperature is 1100 to 1300 ℃.

In a preferred embodiment of the present invention, the solidification rate is 600 to 800 ℃.

In a preferred embodiment of the invention, the temperature rise during casting is carried out with a temperature gradient between 10 and 25 ℃/min.

In a preferred embodiment of the invention, the temperature reduction during solidification is carried out with a temperature gradient between 10 and 1 ℃/min.

The invention has the beneficial effects that:

(1) the invention has short process flow and low production cost: the method for directly preparing the copper alloy special-shaped strip by adopting the temperature-controlled casting mould continuous casting technology can reduce the hot rolling and extrusion processes in the traditional strip blank preparation process, reduce the subsequent processing processes and obviously shorten the preparation process flow of the copper alloy special-shaped strip; and the continuous casting and cold rolling equipment is simple, the investment is small, and the production cost is favorably reduced.

(2) The product of the invention has good surface quality and excellent performance: the copper alloy special-shaped strip directly prepared by adopting the temperature-controlled casting mould continuous casting technology can improve the nonuniform phenomenon of casting blank tissues and eliminate the surface defects of the strip blank, and the high-performance copper alloy special-shaped material with excellent performance, high dimensional precision, high density, columnar crystal tissues, good mechanical property and good electric conductivity is prepared.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.