CN107604239B - A kind of gray cast iron material and casting method and purposes - Google Patents
A kind of gray cast iron material and casting method and purposes Download PDFInfo
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Abstract
The invention discloses a kind of gray cast iron material and casting method and purposes, the chemical components and weight percent of the gray cast iron material are as follows: C 3.45%~3.80%, Si 1.6%~2.1%, Mn 0.5%~0.8%, S 0.05%~0.15%, Cr 0.15%~0.4%, Cu 0.4%~0.6%, Mo 0.3%~0.6%, Nb 0.05%~0.2%, Ti≤0.04%, Ni 0.05%~0.15%, RE 0.01%~0.05% and surplus Fe.Gray cast iron material provided by the present invention, the content containing higher carbon content and alloying element.Using automobile brake disc obtained by gray cast iron material of the present invention, since material has more graphite, the more conducively heat dissipation performance of brake disc, while making the brake disc produced that there is lower hardness, high tensile strength.
Description
Technical field
The present invention relates to cast-iron alloy and auto parts field more particularly to a kind of gray cast iron material and casting methods and use
On the way.
Background technique
Braking system is one of system the most key in auto parts and components, is the important leverage of vehicle safety travel.With
The fast development of China's road traffic, to the safety braking performance of automobile, more stringent requirements are proposed.Therefore, to automobile brake
Performance of material selected by disk, including hardness, intensity etc. have higher requirement.
Currently, existing automobile brake disc material is generally common gray cast iron and low-alloy cast iron.Due to common ash casting
The strength of materials, the hardness of iron are lower, serious wear or heat fatigue cracking situation easily occur, and it is negative to have been unable to meet status automobile height
The requirement of lotus, high speed.Low-alloy cast iron is mainly added to the precious metal alloys element such as Ni, Mo in plain cast iron, although
It is able to satisfy high-intensitive requirement, but high production cost.In addition, if phosphorus content is less in gray cast iron material, material hardness, tension
Better performances, but since Graphite Precipitation amount is less, graphite length is shorter, brake disc poor radiation in use is easily caused,
The problems such as localized hyperthermia generates thermal expansion, and brake is caused to be shaken.If phosphorus content is more in gray cast iron material, the hardness of material,
Intensity is inadequate, and wear-resisting property is bad, and the coarse roughness after finishing of graphite is also difficult to ensure.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of high-intensitive soft gray cast iron
Material and casting technique and application overcome gray cast iron material poor thermal conductivity, the hardness existing in the prior art for brake disc
And intensity is inadequate, makes to occur brake shake in braking process or graphite is coarse, surface roughness is unqualified, brake face surface quality is poor
The problems such as.
To achieve the goals above or other purposes, the present invention is achieved by the following technical solutions.
A kind of high intensity soft gray cast iron material, the weight percent of the chemical component of the gray cast iron material are as follows: C
3.45%~3.80%, Si 1.6%~2.1%, Mn 0.5%~0.8%, S 0.05%~0.15%, Cr 0.15%~
0.4%, Cu 0.4%~0.6%, Mo 0.3%~0.6%, Nb 0.05%~0.2%, Ti≤0.04%, Ni 0.05%~
The Fe of 0.15%, RE 0.01%~0.05% and surplus.
Further, the hardness of the gray cast iron material is 190-235HB, tensile strength >=275Mpa, content of pearlite in alloy
For 90-98%, graphite A type content >=90%, graphite is 3-5 grades long (providing to be classified according to GB7216-1987), and carbon equivalent ce is
3.98-4.50。
Second aspect of the present invention provides a kind of method for manufacturing above-mentioned high-intensitive soft gray cast iron material, including as follows
Step:
(1) metal material consistent with the chemical component of gray cast iron described above is subjected to impeller blasting, then heated
Melting obtains molten iron；
(2) molten iron is subjected to inoculation；
(3) it casts: forming the gray cast iron material after the molten iron of step (2) inoculation is cast.
Preferably, metal material described in step (1) includes copper and ferroalloy.
It is highly preferred that the ferroalloy includes the pig iron, steel scrap, foundry returns, Antaciron, manganeisen, ferrochrome；Institute
It states copper and is selected from red copper.
Further, the metal material includes following raw material components and parts by weight: 0~10 part of the pig iron, steel scrap 45~
50 parts, 45~50 parts of foundry returns, 0.4~0.5 part of Antaciron, 0.25~0.35 part of manganeisen, ferrochrome 0.5~0.6
Part, 0.4~0.5 part of red copper.
Preferably, carbon content is 4.1%~4.4% in the pig iron, and silicone content is 1.3%~1.5%, and manganese content is
0.12%~0.15%, phosphorus content is 0.04%~0.045%, and sulfur content is 0.006%~0.010%.
In the steel scrap carbon content be 0.1%~0.3%, silicone content be 0.1%~0.3%, manganese content be 0.1%~
0.3%, phosphorus content is 0.01%~0.03%, and sulfur content is 0.005%~0.010%, and chromium content is 0.01%~0.05%.
In the foundry returns, carbon content is 3.1%~3.2%, and silicone content is 2.0%~2.2%, manganese content 0.6%
~0.8%, phosphorus content is 0.02%~0.06%, and sulfur content is 0.05%~0.15%, and chromium content is 0.1%~0.3%, copper
Content is 0.1%~0.5%.
Silicone content is 72%~78% in the Antaciron.
The content of manganese is 65%~72% in the manganeisen.
The content of chromium is 45%~55% in the ferrochrome.
The content of copper is 99%~99.95% in the red copper.
Preferably, in step (1), metal material is added in intermediate frequency furnace, laser heating carries out melting, and when melting answers
Guarantee full furnace fusing, to accelerate burn-off rate.
Preferably, smelting temperature is 1520-1560 DEG C in step (1), and smelting temperature refers to higher than metal material in the present invention
Expect the temperature of fusing, which refers to the temperature of molten iron overheat.
It preferably, further include that spectral detection and heat analysis detection are carried out to the molten iron of melting in step (1).It is highly preferred that
In step (1) it is metal material melting after, when being heated to 1450-1500 DEG C, take appropriate molten iron casting in spectrum samples cup,
Hardening Quench obtains the sample of complete chill, by electric spark direct-reading spectrometer carry out chemical composition analysis detection, and according to point
Alloy adjustment molten iron chemical component is further added in analysis result, until adjusting to the chemical composition ranges of the gray cast iron material
It is interior.Then proceed to the overtemperature for being warming up to molten iron.
It is highly preferred that in step (1) using NSP-2552 thermal analyzer to the carbon equivalent, phosphorus content, silicon content of molten iron into
Row analysis.
Preferably, inovulant used by inoculation is rare earth inovulant in step (2).It is highly preferred that the rare earth
Inovulant is the silicon rare earth inovulant or RESEED inovulant purchased from Zhenjiang Dongfeng.The granularity of the RESEED inovulant is 0.2-
5mm。
Preferably, the inoculation in step (2) carries out in two times, carried out during coming out of the stove respectively in molten iron, being ladle-to-ladle with
Stream is bred.Pregnant amount when inoculation is 0.5%-0.6%.It is highly preferred that the pregnant amount of inoculation when molten iron is come out of the stove
For 0.2%-0.3%；The pregnant amount of inoculation during ladle-to-ladle is 0.2%-0.3%.Wherein, the pregnant amount is pregnant
Educate the weight ratio of agent and molten iron.
Preferably, the inoculation of step (2) terminates the casting step for starting to carry out step (3) in 2min, in this time
Interior pregnant effect is best, and otherwise, pregnant effect can decline over time.
Preferably, cast temperature is 1350-1450 DEG C in step (3).
Third aspect present invention also provides a kind of purposes of the gray cast iron material in automobile brake disc.
Another aspect of the present invention additionally provides a kind of automobile brake disc, automobile brake disc gray cast iron material described above
Material is cast.
The method that the present invention uses above-mentioned gray cast iron material to prepare the automobile brake disc, includes the following steps:
A above-mentioned gray cast iron material) is smelted into molten iron；
B) molten iron of melting is poured into the mold cavity of brake disc and is cast to get automobile brake disc.
Preferably, step A) smelting temperature be 1520-1560 DEG C.
Preferably, step B) in cast temperature be 1350-1450 DEG C.
Rare earth inovulant is used in the present invention, graphite tip can be passivated, eutectic cell is promoted to refine, and graphite is equal in fine platy
Even distribution, matrix are that pearlite adds a small amount of ferrite；In combination with alloying, content of pearlite in alloy can be increased and refine its group
It knits.
Gray cast iron material provided by the present invention contains gray cast iron material by the way that properly mixed different-alloy is added
The content of higher carbon content and alloying element.Using automobile brake disc obtained by gray cast iron material of the present invention, due to
Material has more graphite, therefore the heat dissipation performance of more conducively brake disc, while it is lower to have the brake disc produced
Hardness, high tensile strength.
Figure of description
Fig. 1 is the metallographic microscope of the gray cast iron material in embodiment 1；
Fig. 2 is the graphite morphology of the gray cast iron material in embodiment 1.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Before further describing the specific embodiments of the present invention, it should be appreciated that protection scope of the present invention is not limited to down
State specific specific embodiment；It is also understood that term used in the embodiment of the present invention is specific specific in order to describe
Embodiment, rather than limiting the scope of protection of the present invention.The test method of actual conditions is not specified in the following example,
Usually according to normal condition, or according to condition proposed by each manufacturer.
When embodiment provides numberical range, it should be appreciated that except non-present invention is otherwise noted, two ends of each numberical range
Any one numerical value can be selected between point and two endpoints.Unless otherwise defined, the present invention used in all technologies and
Scientific term is identical as the normally understood meaning of those skilled in the art of the present technique.Except specific method, equipment used in embodiment,
Outside material, grasp and record of the invention according to those skilled in the art to the prior art can also be used and this
Any method, equipment and the material of the similar or equivalent prior art of method described in inventive embodiments, equipment, material come real
The existing present invention.
In embodiments of the present invention, it is preferable that the gray cast iron material includes following raw material components and parts by weight: the pig iron
0~10 part, 45~50 parts of steel scrap, 45~50 parts of foundry returns, 0.4~0.5 part of Antaciron, 0.25~0.35 part of manganeisen,
0.5~0.6 part of ferrochrome, 0.4~0.5 part of red copper.
It is highly preferred that carbon content is 4.1%~4.4% in the pig iron, silicone content is 1.3%~1.5%, and manganese content is
0.12%~0.15%, phosphorus content is 0.04%~0.045%, and sulfur content is 0.006%~0.010%.
In the steel scrap carbon content be 0.1%~0.3%, silicone content be 0.1%~0.3%, manganese content be 0.1%~
0.3%, phosphorus content is 0.01%~0.03%, and sulfur content is 0.005%~0.010%, and chromium content is 0.01%~0.05%.
In the foundry returns, carbon content is 3.1%~3.2%, and silicone content is 2.0%~2.2%, manganese content 0.6%
~0.8%, phosphorus content is 0.02%~0.06%, and sulfur content is 0.05%~0.15%, and chromium content is 0.1%~0.3%, copper
Content is 0.1%~0.5%.
Silicone content is 72%~78% in the Antaciron.The content of manganese is 65%~72% in the manganeisen.
The content of chromium is 45%~55% in the ferrochrome.The content of copper is 99%~99.95% in the red copper.
Embodiment 1
1, a kind of rare earth high strength soft gray cast iron material, raw material components and parts by weight are as follows: 8 parts of the pig iron, steel scrap
45 parts, 45.4 parts of foundry returns, 0.4 part of Antaciron, 0.3 part of manganeisen, 0.5 part of ferrochrome, 0.4 part of red copper.
A kind of high intensity soft gray cast iron material, preparation method include the following steps:
(1) pig iron, steel scrap, foundry returns, Antaciron, manganeisen, ferrochrome, red copper are subjected to impeller blasting, table
Face non-corroding；Then laser heating in intermediate frequency furnace is added, guarantees full furnace fusing when fusing as far as possible, accelerates burn-off rate,
In, when being heated to 1450 DEG C, take appropriate molten iron casting in spectrum samples cup, hardening Quench obtains the sample of complete chill, leads to
It crosses electric spark direct-reading spectrometer and carries out chemical composition analysis detection, and suitable alloy adjustment is further added based on the analysis results
Molten iron chemical component；It is analyzed using carbon equivalent, phosphorus content, silicon content of the NSP-2552 thermal analyzer to molten iron；After of continuing rising
Temperature reaches molten iron overtemperature to 1560 DEG C；
(2) inoculation: using silicon rare earth inovulant, comes out of the stove in molten iron carry out current-following inoculation in the process with ladle-to-ladle respectively,
Pregnant amount is respectively 0.2% and 0.3%；
(3) it casts: the molten iron that step (2) breeds completion is cast in 2min, cast temperature is 1450 DEG C, that is, forms institute
State high-intensitive soft gray cast iron material.
Gray cast iron material obtained by the present embodiment, the weight percent of chemical component are as follows: C 3.70%, Si
1.70%, Mn 0.76%, S 0.10%, Cr 0.25%, Cu 0.60%, Mo 0.50%, Nb 0.10%, Ti 0.02%,
Ni 0.15%, RE 0.01%, surplus Fe.The content of pearlite in alloy of gained gray cast iron is 95%, graphite A type content >=90%,
Graphite is 3-5 grades long (providing to be classified according to GB7216-1987), carbon equivalent ce 4.50.With reference to GB/T9439 " gray iron casting " institute
Tensile strength (σ b) >=275Mpa of survey, Brinell hardness (HBW) 190-235HB.
The gray cast iron material in the present embodiment is observed using the metallographic microscope of this field routine, Fig. 1 is this reality
The metallographic microscope of the gray cast iron material of example is applied, Fig. 2 is the graphite morphology of the gray cast iron material of the present embodiment, as can be seen from the figure
Graphite Distribution is uniform.
2, above-mentioned gray cast iron material is smelted into molten iron, overtemperature is 1560 DEG C；Then the molten iron of melting is poured into system
It casts in the mold cavity of Moving plate, cast temperature is 1350 DEG C to get vehicle made from high-intensitive soft gray cast iron material
Brake disc.
Above-mentioned automobile brake disc is subjected to tensile strength and Brinell hardness test, test reference GB/T9439 " grey cast iron casting
Part "；The results show that tensile strength (σ b) 332Mpa of automobile brake disc made from the present embodiment, Brinell hardness (HBW):
220HB。
Embodiment 2
1, in the present embodiment high-intensitive soft gray cast iron material raw material components and parts by weight are as follows: 2.25 parts of the pig iron,
46 parts of steel scrap, 50 parts of foundry returns, 0.45 part of Antaciron, 0.3 part of manganeisen, 0.55 part of ferrochrome, 0.45 part of red copper.
Preparation method includes the following steps:
(1) pig iron, steel scrap, foundry returns, Antaciron, manganeisen, ferrochrome, red copper are subjected to impeller blasting, table
Face non-corroding；Then laser heating in intermediate frequency furnace is added, guarantees full furnace fusing when fusing as far as possible, accelerates burn-off rate,
In, when being heated to 1500 DEG C, take appropriate molten iron casting in spectrum samples cup, hardening Quench obtains the sample of complete chill, leads to
It crosses electric spark direct-reading spectrometer and carries out chemical composition analysis detection, and suitable alloy adjustment is further added based on the analysis results
Molten iron chemical component；It is analyzed using carbon equivalent, phosphorus content, silicon content of the NSP-2552 thermal analyzer to molten iron；After of continuing rising
Temperature reaches molten iron overtemperature to 1520 DEG C；
(2) inoculation: using silicon rare earth inovulant, comes out of the stove in molten iron carry out current-following inoculation in the process with ladle-to-ladle respectively,
Pregnant amount is respectively 0.3% and 0.3%；
(3) it casts: the molten iron that step (2) breeds completion is cast in 2min, cast temperature is 1350 DEG C, that is, forms institute
State high-intensitive soft gray cast iron material.
The chemical component weight ratio of the gray cast iron material finally obtained are as follows: C 3.45%, Si 2.10%, Mn 0.50%, S
0.08%, Cr 0.15%, Cu 0.40%, Mo 0.40%, Nb 0.1%, Ti 0.02%, Ni 0.08%, RE 0.05%,
Surplus Fe.The content of pearlite in alloy of gained gray cast iron is 98%, and graphite A type content >=90%, long 3-5 grades of graphite (according to GB7216-
1987 regulation classifications), carbon equivalent ce 3.98.The tensile strength (σ b) surveyed with reference to GB/T9439 " gray iron casting " >=
275Mpa, Brinell hardness (HBW) 190-235HB.
2, above-mentioned gray cast iron material is smelted into molten iron, overtemperature is 1520 DEG C；Then the molten iron of melting is poured into system
It casts in the mold cavity of Moving plate, cast temperature is 1450 DEG C to get vehicle made from high-intensitive soft gray cast iron material
Brake disc.
Above-mentioned automobile brake disc is subjected to tensile strength and Brinell hardness test, test reference GB/T9439 " grey cast iron casting
Part "；The results show that use the tensile strength (σ b) of automobile brake disc obtained by the gray cast iron material of the present embodiment for
330Mpa, Brinell hardness (HBW): 235HB.
Embodiment 3
1, in the present embodiment high-intensitive soft gray cast iron material raw material components and parts by weight are as follows: steel scrap 50 part, time
48.05 parts of furnace charge, 0.5 part of Antaciron, 0.35 part of manganeisen, 0.6 part of ferrochrome, 0.5 part of red copper.
Preparation method includes the following steps:
(1) pig iron, steel scrap, foundry returns, Antaciron, manganeisen, ferrochrome, red copper are subjected to impeller blasting, table
Face non-corroding；Then laser heating in intermediate frequency furnace is added, guarantees full furnace fusing when fusing as far as possible, accelerates burn-off rate,
In, when being heated to 1450-1500 DEG C, take appropriate molten iron casting in spectrum samples cup, hardening Quench obtains the examination of complete chill
Sample carries out chemical composition analysis detection by electric spark direct-reading spectrometer, and suitable close further is added based on the analysis results
Gold adjustment molten iron chemical component；It is analyzed using carbon equivalent, phosphorus content, silicon content of the NSP-2552 thermal analyzer to molten iron；
It is continuously heating to 1520-1560 DEG C, reaches molten iron overtemperature；
(2) inoculation: using silicon rare earth inovulant, comes out of the stove in molten iron carry out current-following inoculation in the process with ladle-to-ladle respectively,
Pregnant amount is respectively 0.3% and 0.2%；
(3) it casts: the molten iron that step (2) breeds completion is cast in 2min, cast temperature is 1350-1450 DEG C, i.e.,
Form the high-intensitive soft gray cast iron material.
The chemical component weight ratio of the gray cast iron material finally obtained are as follows: C 3.60%, Si 1.80%, Mn 0.70%, S
0.05%, Cr 0.40%, Cu 0.55%, Mo 0.3%, Nb 0.05%, Ti 0.04%, Ni 0.09%, RE 0.03%,
Surplus is Fe.The content of pearlite in alloy of gained gray cast iron be 93%, graphite A type content >=90%, graphite it is 3-5 grades long (according to
The classification of GB7216-1987 regulation), carbon equivalent ce 4.20.The tensile strength (σ b) surveyed with reference to GB/T9439 " gray iron casting "
>=275Mpa, Brinell hardness (HBW) 190-235HB.
2, above-mentioned gray cast iron material is smelted into molten iron, overtemperature is 1520-1560 DEG C；Then the molten iron of melting is fallen
Enter in the mold cavity of brake disc and cast, cast temperature is 1400 DEG C and is made to get high-intensitive soft gray cast iron material
Automobile brake disc.
Above-mentioned automobile brake disc is subjected to tensile strength and Brinell hardness test, test reference GB/T9439 " grey cast iron casting
Part "；The results show that use the tensile strength (σ b) of automobile brake disc obtained by the gray cast iron material of the present embodiment for
328Mpa, Brinell hardness (HBW): 220HB.
Embodiment 4
The preparation method is the same as that of Example 1, unlike the first embodiment, high-intensitive soft gray cast iron material in the present embodiment
Raw material components and parts by weight are as follows: 4 parts of the pig iron, 46 parts of steel scrap, 48.35 parts of foundry returns, 0.4 part of Antaciron, manganeisen
0.25 part, 0.55 part of ferrochrome, 0.45 part of red copper.
The chemical component weight ratio of the gray cast iron material finally obtained are as follows: C 3.80%, Si 1.60%, Mn 0.80%, S
0.15%, Cr 0.30%, Cu 0.40%, Mo 0.60%, Nb 0.2%, Ti 0.02%, Ni 0.05%, RE 0.01%,
Surplus Fe.The content of pearlite in alloy of gained gray cast iron is 95%, and graphite A type content >=90%, long 3-5 grades of graphite (according to GB7216-
1987 regulation classifications), carbon equivalent ce 4.50.The tensile strength (σ b) surveyed with reference to GB/T9439 " gray iron casting " >=
275Mpa, Brinell hardness (HBW) 190-235HB.
Tensile strength (σ b) >=295Mpa of automobile brake disc obtained by gray cast iron material using the present embodiment, Bu Shi
Hardness (HBW): 200-235HB.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of gray cast iron material, which is characterized in that the weight percent of the chemical component of the gray cast iron material are as follows: C
3.45%~3.80%, Si 1.6%~2.1%, Mn 0.5%~0.8%, S 0.05%~0.15%, Cr 0.15%~
0.4%, Cu 0.4%~0.6%, Mo 0.3%~0.6%, Nb 0.05%~0.2%, Ti≤0.04%, Ni 0.05%~
The Fe of 0.15%, RE 0.01%~0.05% and surplus；
The hardness of the gray cast iron material is 190~235HB, tensile strength >=275MPa, content of pearlite in alloy 90-98%, stone
Black A type content >=90%, graphite is 3-5 grades long, and carbon equivalent ce is 3.98~4.50；
Wherein, the preparation method of gray cast iron material includes the following steps:
(1) metal material is subjected to impeller blasting, then heats melting and obtains molten iron；
(2) molten iron is subjected to inoculation；
(3) it casts: forming the gray cast iron material after the molten iron of step (2) inoculation is cast；
The metal material includes following raw material components and parts by weight: 0~10 part of the pig iron, 45~50 parts of steel scrap, foundry returns 45
~50 parts, 0.4~0.5 part of Antaciron, 0.25~0.35 part of manganeisen, 0.5~0.6 part of ferrochrome, red copper 0.4~
0.5 part；
In the pig iron carbon content be 4.1%~4.4%, silicone content be 1.3%~1.5%, manganese content be 0.12%~
0.15%, phosphorus content is 0.04%~0.045%, and sulfur content is 0.006%~0.010%；
Carbon content is 0.1%~0.3% in the steel scrap, and silicone content is 0.1%~0.3%, and manganese content is 0.1%~0.3%,
Phosphorus content is 0.01%~0.03%, and sulfur content is 0.005%~0.010%, and chromium content is 0.01%~0.05%；
In the foundry returns, carbon content be 3.1%~3.2%, silicone content be 2.0%~2.2%, manganese content be 0.6%~
0.8%, phosphorus content is 0.02%~0.06%, and sulfur content is 0.05%~0.15%, and chromium content is 0.1%~0.3%, and copper contains
Amount is 0.1%~0.5%；
Silicone content is 72%~78% in the Antaciron；The content of manganese is 65%~72% in the manganeisen；It is described
The content of chromium is 45%~55% in ferrochrome；The content of copper is 99%~99.95% in the red copper.
2. a kind of manufacturing method of gray cast iron material as described in claim 1, which comprises the steps of:
(1) metal material consistent with the chemical component of gray cast iron described in claim 1 is subjected to impeller blasting, then heated
Melting obtains molten iron；
(2) molten iron is subjected to inoculation；
(3) it casts: forming the gray cast iron material after the molten iron of step (2) inoculation is cast；
The metal material includes following raw material components and parts by weight: 0~10 part of the pig iron, 45~50 parts of steel scrap, foundry returns 45
~50 parts, 0.4~0.5 part of Antaciron, 0.25~0.35 part of manganeisen, 0.5~0.6 part of ferrochrome, red copper 0.4~
0.5 part；
In the pig iron carbon content be 4.1%~4.4%, silicone content be 1.3%~1.5%, manganese content be 0.12%~
0.15%, phosphorus content is 0.04%~0.045%, and sulfur content is 0.006%~0.010%；
Carbon content is 0.1%~0.3% in the steel scrap, and silicone content is 0.1%~0.3%, and manganese content is 0.1%~0.3%,
Phosphorus content is 0.01%~0.03%, and sulfur content is 0.005%~0.010%, and chromium content is 0.01%~0.05%；
In the foundry returns, carbon content be 3.1%~3.2%, silicone content be 2.0%~2.2%, manganese content be 0.6%~
0.8%, phosphorus content is 0.02%~0.06%, and sulfur content is 0.05%~0.15%, and chromium content is 0.1%~0.3%, and copper contains
Amount is 0.1%~0.5%；
Silicone content is 72%~78% in the Antaciron；The content of manganese is 65%~72% in the manganeisen；It is described
The content of chromium is 45%~55% in ferrochrome；The content of copper is 99%~99.95% in the red copper.
3. manufacturing method as claimed in claim 2, which is characterized in that step (1) smelting temperature is 1520-1560 DEG C.
4. manufacturing method as claimed in claim 2, which is characterized in that metal material described in step (1) includes that copper and iron close
Gold.
5. manufacturing method as claimed in claim 2, which is characterized in that inoculation uses rare earth inovulant in step (2), pregnant
Educating pregnant amount when processing is 0.5-0.6%.
6. manufacturing method as claimed in claim 2, which is characterized in that cast temperature is 1350-1450 DEG C in step (3).
7. purposes of the gray cast iron material as described in claim 1 in automobile brake disc.
8. a kind of automobile brake disc, which is characterized in that cast by gray cast iron material described in claim 1.
9. a kind of manufacturing method of automobile brake disc as claimed in claim 8, which comprises the steps of:
A gray cast iron material described in claim 1) is smelted into molten iron；
B) molten iron of melting is poured into the mold cavity of brake disc and is cast to get automobile brake disc.
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| CN108149131A (en) * | 2018-01-24 | 2018-06-12 | 山东建筑大学 | A kind of method for preparing the heat-resisting gray cast iron of tungsten carbide-SiC particles reinforced |
| CN108315633B (en) * | 2018-01-26 | 2020-10-30 | 清华大学 | Gray cast iron with high heat conductivity and high strength and preparation method thereof |
| CN108941483A (en) * | 2018-08-23 | 2018-12-07 | 江苏华太电力仪表有限公司 | A kind of high-strength alloy gray cast iron valve body manufacturing process |
| IT201900016835A1 (en) | 2019-09-20 | 2021-03-20 | Cofren Srl | PAIR OF DISC / BRAKE FRICTION FOR RAILWAY VEHICLES |
| CN110983170A (en) * | 2019-11-21 | 2020-04-10 | 中国第一汽车股份有限公司 | Method for smelting heat-fatigue-resistant brake drum of commercial vehicle |
| CN112210711B (en) * | 2020-10-12 | 2021-11-16 | 朝阳飞马车辆设备股份公司 | Multi-alloy TMM-R-01 brake disc material, preparation method and application thereof |
| CN115074611B (en) * | 2021-03-16 | 2023-08-29 | 中原内配集团股份有限公司 | Ferrite matrix gray cast iron and manufacturing method and application thereof |
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