How to improve the hardness of CuNi2Si copper alloy

When smelting "CUN2Si", adding some titanium elements to it can greatly improve the hardness of CUN2SI copper alloy.

CUN2Si belongs to nickel-silicon bronze and implements the standard "DIN EN 12163-1998".

The chemical composition of Cuni2Si is shown in the figure below

Shanghai Bingzheng Industry **** is the production and distribution of copper and copper alloys (tin bronze, aluminum bronze, chromium zirconium copper, beryllium copper, brass alloy, etc.) high-temperature alloys, nickel-based alloys, precision alloys, Stellite alloys, Hastelloy, Monel alloys, duplex steel, super stainless steel, copper-nickel alloys, corrosion-resistant alloys, imported stainless steel and supporting welding consumables, non-magnetic die steel as the main business of enterprises.

Improving the hardness of cuni2si copper alloy: adding trace amount of cobalt (,, to study the effects of trace amount of cobalt, smelting and casting technology and processing technology parameters on the mechanical properties of the strip produced by rolling method. Cobalt can effectively reduce the grain size of the as-cast alloy, change the shape of the grain, improve the tensile strength and hardness of the alloy, and ensure that the alloy has good ductility.

Cobalt is added to aluminum brass. The brass strip produced by reasonable processing technology has more excellent performance than tin phosphor bronze, the tensile strength of the thick strip can reach, the elongation is, the Vickers hardness value is 228, and the maximum tensile strength of the strip in the hard state (805MPa) has been improved, which meets the requirements of the use of elastic elements; At the same time, due to the zinc contained in the brass, it can effectively reduce costs and has practical application value.

Copper alloy is an alloy composed of pure copper as a matrix and the addition of one or several other elements. Pure copper is purple-red and is also known as copper. Pure copper has a density of 1083 melting point and excellent electrical conductivity, thermal conductivity, ductility and corrosion resistance.

It is mainly used to make electrical equipment such as generators, busbars, cables, switchgears, transformers, heat exchangers, pipes, flat plate collectors and other thermal conduction equipment for solar heating devices. Commonly used copper alloys are divided into three categories: brass, bronze, and cupronickel.

Hardness, a physical term, is the ability of a material to resist a hard object pressing into its surface locally is called hardness. The local resistance of a solid to the invasion of external objects is an indicator of the hardness and softness of various materials. There are different hardness standards due to the different test methods specified.

The mechanical meanings of various hardness standards are different and cannot be directly converted to each other, but they can be compared through experiments.

<> CUNIC2SICR belongs to the German standard chromium-nickel-silicon bronze, high-performance precipitation-hardened nickel-silicon bronze, which can be aged.

CUNIC2SICR has high electrical and thermal conductivity, good strength and hardness, heat and wear resistance, and strong anti-deformation ability.

CUNIC2SICR is widely used for spot welding of automobile, spacecraft formwork and stainless steel. Ideal electrode materials for sealed welding machines, high-voltage switch welding materials and circuit breaker materials, high-strength, high-conductivity, and high-melting point materials for continuous crystallization devices are widely used in the metallurgical industry as wire materials for IC frames. Stud weld chucks and tips, sprue bushings, resistance welding wheels and fixtures, resistance welding tips and injection molds, blow cores and cavities.

Cuni2Si contains silicon-nickel-copper.

Material Name: Contains silicon-nickel-copper.

Grade: CUN2SI

Code: Standard: DIN 17666-1983

Cuni2Si Chemical Composition:

Copper cu: Margin.

Nickel Ni: Silicon Si:

Manganese mn:

Sum of impurities:

I think it may be due to the low forging temperature that causes the product to be hard enough.

Colleagues, help!! Time is of the essence!!