CN104032166A

CN104032166A - Nickel-containing manganese brass alloy material and preparation method thereof

Info

Publication number: CN104032166A
Application number: CN201410197405.9A
Authority: CN
Inventors: 陈大军
Original assignee: BENGBU HONGWEI FILTER Co Ltd
Current assignee: BENGBU HONGWEI FILTER Co Ltd
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2014-09-10

Abstract

A nickel-containing manganese brass alloy material comprises the chemical elements in percent by mass: 1.0-1.5% of Fe, 36-38% of Zn, 0.6-0.8% of Mn, 0.3-0.5% of Al, 2.0-2.5% of Ni, 3.0-3.5% of Mo, 0.005-0.008% of Ce, and the balance Cu. By adding Ni, Fe, Mo, Ce and other elements into manganese brass, the alloy possesses excellent mechanical properties and corrosion resistance owned by manganese brass, especially stress corrosion resistance; and the alloy is increased in strength, good in cutting performance and good in electric conductivity, and can be subjected to forging, casting and cutting processing. By reasonably controlling the processing temperature after casting and taking waste copper as a raw material, the hardness of the core part and the hardness of the surface are basically consistent, and the alloy quality is uniform. An employed refining agent is used for casting production, is capable of reducing the porosity degree of a casting by 1-2 degree and enabling the oxide inclusions to be around second grade, and helps to obviously improve the yield.

Description

A kind of nickeliferous manganese brass alloy material and preparation method thereof

Technical field

The manufacture field that the present invention relates to metal alloy compositions, relates in particular to a kind of nickeliferous manganese brass alloy material and preparation method thereof.

Background technology

Copper is because of its good electroconductibility, plasticity-, and erosion resistance, applies very extensive.In copper alloy, add Lv ﹑ Nie ﹑ Meng ﹑ Xi ﹑ Gui ﹑ lead and other elements, can improve the performance of copper, for different places.Still there are some problems in the existing copper alloy of China at present, and as alloy contains a large amount of impurity elements, high temperature fatigue is poor, hot strength is low; Hardness is low, wears no resistance, frictional coefficient is large, and work-ing life is short; Poorly conductive, waste electric energy; Bending machining performance is poor, easily fractures; Quality weight, constructional difficulties; Can't meet market demands.

Summary of the invention

The object of the present invention is to provide a kind of nickeliferous manganese brass alloy material and preparation method thereof, this Cu alloy material has advantages of that intensity is high, corrosion-resistant, good processability.

Technical scheme of the present invention is as follows:

A kind of nickeliferous manganese brass alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: iron 1.0-1.5, zinc 36-38, manganese 0.6-0.8, aluminium 0.3-0.5, Ni2.0-2.5, Mo3.0-3.5, Ce0.005-0.008, surplus are copper.

The production method of described nickeliferous manganese brass alloy material, is characterized in that:

(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.5-0.9 ratio, fine copper is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add copper scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;

(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) zinc; (2) iron, manganese; (3) aluminium, Mo; (4) other remaining components; The each batch of timed interval of dropping into element is 17-20 minute, after feeding intake, stirs.

Described casting postheat treatment is: be first warming up to 250-260 DEG C by room temperature with 240-250 DEG C/h of speed, and insulation 50-60 minute, then be warming up to 590-600 DEG C with 240-250 DEG C/h of speed, insulation 1-2 hour; Be cooled to 100-120 DEG C with 250-260 DEG C/h of speed again, insulation 1-2 hour; Be warming up to 360-380 DEG C with 240-250 DEG C/h of speed again, insulation 1-2 hour; Be cooled to 100-120 DEG C with 250-260 DEG C/h of speed again, insulation 1-2 hour; Be warming up to 270-290 DEG C with 200-210 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.

Described refining agent is made up of the raw material of following weight part: silica 1 5-20, rhombspar 3-5, bitter water chestnut soil 4-8, clay 30-35, titanium dioxide 2-3, fluorite 6-8, jade powder 3-4, montmorillonite 1-2, trees ashes 1-2, Na ₂tiF ₆8-10, Sodium Silicofluoride 3-4; Its preparation method is that silicon-dioxide, rhombspar, bitter water chestnut soil, clay, titanium dioxide, fluorite, jade powder, montmorillonite, trees ashes are mixed, be heated to 2600-3000 DEG C, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.

Beneficial effect of the present invention

Manganese brass alloy of the present invention has added the elements such as nickel, iron, Mo, Ce, has mechanical property and corrosion resistance nature, especially the anticorrosion stress-resistant performance of manganese brass excellence; And strength increase, excellent cutting performance, conducts electricity very well, and can forge, casting and machining.By reasonable control casting post-processing temperature, use copper scrap as raw material, make core hardness and surface hardness basically identical, alloy quality homogeneous.Refining agent of the present invention, for Foundry Production, can make the degree of porosity in foundry goods reduce 1-2 degree, and oxide inclusion, 2 grades of left and right, obviously improves yield rate.

Embodiment

A kind of nickeliferous manganese brass alloy material, chemical element composition and mass percent thereof that it contains are: iron 1.0-1.5, zinc 36-38, manganese 0.6-0.8, aluminium 0.3-0.5, Ni2.0-2.5, Mo3.0-3.5, Ce0.005-0.008, surplus are copper.

The production method of described nickeliferous manganese brass alloy material is as follows:

(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.7 ratio, fine copper is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add copper scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;

(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) zinc; (2) iron, manganese; (3) aluminium, Mo; (4) other remaining components; The each batch of timed interval of dropping into element is 18 minutes, after feeding intake, stirs.

Described casting postheat treatment is: be first warming up to 255 DEG C by room temperature with 245 DEG C/h of speed, be incubated 55 minutes, then be warming up to 595 DEG C with 245 DEG C/h of speed, be incubated 1.5 hours; Be cooled to 110 DEG C with 255 DEG C/h of speed again, be incubated 1.5 hours; Be warming up to 370 DEG C with 245 DEG C/h of speed again, be incubated 1.6 hours; Be cooled to 110 DEG C with 256 DEG C/h of speed again, be incubated 1.5 hours; Be warming up to 280 DEG C with 205 DEG C/h of speed again, be incubated 2.5 hours, take out air cooling and get final product.

Described refining agent by following weight part (kilogram) raw material make: silica 15, rhombspar 3, bitter water chestnut soil 4, clay 30, titanium dioxide 2, fluorite 8, jade powder 4, montmorillonite 1, trees ashes 2, Na ₂tiF ₆8, Sodium Silicofluoride 3; Its preparation method is that silicon-dioxide, rhombspar, bitter water chestnut soil, clay, titanium dioxide, fluorite, jade powder, montmorillonite, trees ashes are mixed, be heated to 2600-3000 DEG C, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.

The nickeliferous manganese brass alloy material of the present embodiment, tensile strength б b is 586Mpa, yield strength 512MPa, hardness value HB is 145, electric conductivity %IACS61,600 DEG C of softening temperatures, unit elongation 15%.

Claims

1. a nickeliferous manganese brass alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: iron 1.0-1.5, zinc 36-38, manganese 0.6-0.8, aluminium 0.3-0.5, Ni2.0-2.5, Mo3.0-3.5, Ce0.005-0.008, surplus are copper.

2. the production method of nickeliferous manganese brass alloy material according to claim 1, is characterized in that:

3. the production method of nickeliferous manganese brass alloy material according to claim 2, it is characterized in that: described casting postheat treatment is: be first warming up to 250-260 DEG C by room temperature with 240-250 DEG C/h of speed, insulation 50-60 minute, be warming up to 590-600 DEG C with 240-250 DEG C/h of speed again, insulation 1-2 hour; Be cooled to 100-120 DEG C with 250-260 DEG C/h of speed again, insulation 1-2 hour; Be warming up to 360-380 DEG C with 240-250 DEG C/h of speed again, insulation 1-2 hour; Be cooled to 100-120 DEG C with 250-260 DEG C/h of speed again, insulation 1-2 hour; Be warming up to 270-290 DEG C with 200-210 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.

4. the production method of nickeliferous manganese brass alloy material according to claim 2, is characterized in that: described refining agent is made up of the raw material of following weight part: silica 1 5-20, rhombspar 3-5, bitter water chestnut soil 4-8, clay 30-35, titanium dioxide 2-3, fluorite 6-8, jade powder 3-4, montmorillonite 1-2, trees ashes 1-2, Na ₂tiF ₆8-10, Sodium Silicofluoride 3-4; Its preparation method is that silicon-dioxide, rhombspar, bitter water chestnut soil, clay, titanium dioxide, fluorite, jade powder, montmorillonite, trees ashes are mixed, be heated to 2600-3000 DEG C, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.