A copper alloy wire rod containing Ag: 0.5 wt % or more and 6 wt % or less and the balance including inevitable impurities and Cu, in which, on a cross section parallel to a longitudinal direction of the copper alloy wire rod, within a range observed with a visual field of 1.7 m in a direction perpendicular to the longitudinal direction and 2.3 m in a direction parallel to the longitudinal direction, the copper alloy wire rod has at least one rectangular range that is a rectangular range having a width perpendicular to the longitudinal direction of 0.2 m and a length parallel to the longitudinal direction of 2.3 m and entirely includes five or more second phase particles containing Ag and having a maximum length in the longitudinal direction of less than 300 nm.

A copper alloy sputtering target is formed by a copper alloy including the content of Ca being 0.3 to 1.7% by mass, the total content of Mg and Al being 5 ppm or less by mass, the content of oxygen being 20 ppm or less by mass, and the remainder is Cu and inevitable impurities. A manufacturing method of a copper alloy sputtering target comprises steps of: preparing a copper having purity of 99.99% or more by mass; melting the copper so as to obtain a molten copper; controlling components so as to obtain a molten metal having a predetermined component composition by the addition of Ca having a purity of 98.5% or more by mass into the molten copper and by melting the Ca; casting the molten metal so as to obtain an ingot; and performing stress relieving annealing after performing hot rolling to the ingot.

The invention relates to a process of producing a non-ferrous metallic tube, in which process comprises a casting stage, in which a cast tube having an outer diameter of 20-70 mm, preferably 35-55 mm and a wall thickness of 1.0-4.0 mm, preferably 2.0-3.0 mm, is casted from melt by continuous upward vertical casting process, and the casting stage is followed by at least two drawing stages. In the drawing stages drawing direction of the cast tube in at least two each other following drawing stages is opposite to each other.

A copper alloy wire and a manufacturing method thereof are provided. The copper alloy wire includes: by weight percentage of components, 0.3 to 0.45 of argent, 0.01 to 0.02 of titanium, and a remaining part that is formed by copper and unavoidable impurities. The method for manufacturing the copper alloy wire is performing two-phase vacuum melting: first performing vacuum electric arc melting into a copper-titanium mother alloy, and then performing vacuum induction melting with remaining components into a copper alloy wire material by means of continuous casting; then drawing the copper alloy wire material into a copper alloy fine wire by a non-slip wire drawing device in a material even-flow wire drawing manner, and finally performing thermal treatment on the copper alloy fine wire by using argon as a protection gas, so as to complete a process of the copper alloy wire.

A manufacturing method of a cylindrical sputtering target material formed of copper or a copper alloy is provided, the method including: a continuous casting step of casting a cylindrical ingot having an average crystal grain diameter equal to or smaller than 20 mm using a continuous casting machine or a semi-continuous casting machine; and a cold working step and a heat treatment step of repeatedly performing cold working and a heat treatment with respect to the cylindrical ingot, to form the cylindrical sputtering target material in which an average crystal grain diameter of an outer peripheral surface is from 10 m to 150 m and a proportion of the area of crystal grains having a crystal grain diameter more than double the average crystal grain diameter is less than 25% of the entire crystal area.

The present invention provides a CuFeP alloy which has a high strength, high conductivity and superior bending workability. The copper alloy comprises 0.01 to 1.0% Fe, 0.01 to 0.4% P, 0.1 to 1.0% Mg, and the remainder Cu and unavoidable impurities. The size of oxides and precipitates including Mg in the copper alloy is controlled so that the ratio of the amount of Mg measured by a specified measurement method in the extracted residue by a specified extracted residue method to the Mg content in said copper alloy is 60% or less, thus endowing the alloy with a high strength and superior bending workability.

In one embodiment, a lead strip caster for battery grids includes a ladle, a nozzle, and a pair of rollers. The lead strip caster produces a continuous lead strip for use as battery positive plate grids. The ladle has an inlet to receive molten lead and has an outlet. The nozzle has at least one passage that communicates with the outlet of the ladle in order to receive molten lead from the ladle. The first roller is situated at a first exterior side of the nozzle. The first roller rotates via a first driver. The second roller is situated at a second exterior side of the nozzle. The second roller rotates via a second driver.

A low-boron-oxygen cutting line for one-way wire winding and a manufacturing method are provided. A core material comprises 55-65 wt % of copper, 0.001-0.03 wt % of boron, 0.05-1.0 wt % of other elements which are at least two of titanium, iron, silicon, nickel, manganese, aluminum, tin, phosphorus and rare earth, less than 0.5 wt % of inevitable impurity elements, and an allowance of zinc; and a surface comprises 35.0-45.0 wt % of copper, 0.001-3.0 wt % of oxygen, 0.0005-0.5 wt % of other elements, at least two of which are titanium, iron, silicon, nickel, manganese, aluminum, tin, phosphorus and rare earth, less than 0.5 wt % of inevitable impurity elements, and an allowance of zinc. The cutting line has improved mechanical properties and strengthened discharge properties, and can cut irregularly shaped materials or those hollowed in the middle.

The disclosure provides a fine-grain tin-phosphor bronze alloy strip and a preparation method thereof. The fine-grain tin-phosphor bronze alloy strip comprises the following elements in percentage by mass: 4.0-10 wt % of Sn, 0.01-0.3 wt % of P and the balance of Cu and inevitable impurity elements, the average grain size of the tin-phosphor bronze alloy strip is 1-3 m, the grain size is in normal distribution, and the standard deviation of the grain size is 0.9 m or below; the proportion of the total low-CSL grain boundary in the tin-phosphor bronze alloy strip in the whole grain boundary is 66-74%, and in the total low-CSL grain boundary, the ratio range of (9+27)/3 is 0.12-0.23:1. The fine-grain tin-phosphor bronze alloy strip of this disclosure enables a finished strip can have the tensile strength and the excellent bending performance at the same time.

The disclosure provides a modified tin-phosphor bronze alloy and a preparation method thereof. The modified tin-phosphor bronze alloy comprises the following elements in percentage by mass: 4.0-10 wt % of Sn, 0.01-0.3 wt % of P and the balance of Cu and inevitable impurity elements, the average grain size of the modified tin-phosphor bronze alloy is 1-3 m, the grain size is in normal distribution, and the standard deviation of the grain size is below 0.8 m; the proportion of the total low-CSL grain boundary in the modified tin-phosphor bronze alloy in the whole grain boundary is 66-74%, and in the total low-CSL grain boundary, the ratio range of (9+27)/3 is (0.12-0.23):1. The modified tin-phosphor bronze alloy of this disclosure enables a finished alloy can give consideration to both tensile strength and excellent bending performance.