CN112090524A - High-hardness impact-resistant wear-resistant ball and manufacturing method thereof - Google Patents
High-hardness impact-resistant wear-resistant ball and manufacturing method thereof Download PDFInfo
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- CN112090524A CN112090524A CN202010770913.7A CN202010770913A CN112090524A CN 112090524 A CN112090524 A CN 112090524A CN 202010770913 A CN202010770913 A CN 202010770913A CN 112090524 A CN112090524 A CN 112090524A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Abstract
The invention belongs to the technical field of wear-resistant balls, and particularly relates to a high-hardness impact-resistant wear-resistant ball and a manufacturing method thereof. The invention provides a high-hardness impact-resistant wear-resistant ball and a manufacturing method thereof, aiming at the problem that the wear-resistant balls stacked together frequently collide with each other in the storage and transportation processes of the wear-resistant balls in the prior art and cause loss of the wear-resistant balls before use. According to the invention, the buffering elastic cushion which is easy to disassemble and assemble is sleeved outside the wear-resistant ball body, so that the wear-resistant ball body is isolated from contact with rainwater and air, and meanwhile, collision among the wear-resistant ball bodies in the storage and transportation process can be prevented, and the wear-resistant ball bodies are prevented from being damaged in the storage and transportation process.
Description
Technical Field
The invention belongs to the technical field of wear-resistant balls, and particularly relates to a high-hardness impact-resistant wear-resistant ball and a manufacturing method thereof.
Background
The wear-resisting ball is a crushing medium used in a ball mill and is used for crushing materials in a mill, one is white cast iron which takes chromium as a main alloy element, which is called chromium alloy cast iron for short, and the cast grinding ball which takes the chromium alloy cast iron as a material is called chromium alloy cast iron grinding ball; the other is that the casting grinding ball using nodular cast iron as material is called nodular cast iron grinding ball, wherein the nodular cast iron grinding ball with the matrix structure mainly being bainite obtained by heat treatment is called bainite ductile iron grinding ball for short; the nodular cast iron grinding ball with the matrix structure mainly martensite obtained by heat treatment is called martensite nodular cast iron grinding ball for short.
In the process of storage and transportation of the wear-resistant balls, the stacked wear-resistant balls frequently collide with each other, and the wear-resistant balls are lost before use. And the exposed wear-resistant balls are easily corroded and oxidized by rainwater and air.
For example, chinese utility model patent discloses a high-strength wear-resistant ball [ application number: 201520474032.5], the utility model discloses a include: the lining ball body is arranged on the framework; the inside lining spheroid has hollow structure, and its inside has concentric spherical cavity, and the skeleton is located spherical cavity, skeleton include many spinal branchs pole, and many spinal branchs pole one end link together at the spheroidal center of inside lining, and the other end and the spheroidal inner wall connection of inside lining are equipped with a plurality of enhancement archs on the spheroidal outer wall of inside lining, strengthen protruding being located branch place straight line, and the supporting layer cladding is outside at the inside lining spheroid, and the wearing layer cladding is outside at the supporting layer, strengthens protruding distance of keeping away from inside lining spheroid one end to the spheroidal outer wall of inside lining and is D, and wearing layer to the spheroidal distance of inside lining are L.
The utility model discloses a through screening the wear-resisting ball of unidimensional through the hole that the diameter increases in proper order, but the device only can detect and screen the size of wear-resisting ball, can't detect the circularity of wear-resisting ball simultaneously.
Disclosure of Invention
The invention aims to solve the problems and provides a high-hardness impact-resistant wear-resistant ball which can prevent the ball from being damaged during storage and transportation.
Another object of the present invention is to provide a method for manufacturing high-hardness impact-resistant and wear-resistant balls with high hardness.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high rigidity wear-resisting ball that shocks resistance, includes wear-resisting ball body and sets up the buffering cushion outside wear-resisting ball body, buffering cushion is including dismantling left hemisphere and the right hemisphere of connection, when left hemisphere and right hemisphere are connected, the internal surface of left hemisphere and right hemisphere all laminates with the surface of wear-resisting ball body mutually.
In foretell high rigidity wear-resisting ball that shocks resistance, the buffering cushion still includes connecting portion, respectively be equipped with a connecting portion and two connecting portion relative settings on left hemisphere and the right hemisphere, the protrusion has the connector on one of them connecting portion, and the relevant position of another connecting portion has the connecting groove to the inside sunken of connecting portion, connector and connecting groove grafting cooperation.
In the above-mentioned high-hardness impact-resistant wear-resistant ball, the connector includes a rod portion and a head portion, which are fixedly connected, wherein one end of the rod portion, which is far away from the head portion, is fixedly connected to the connecting portion, and the cross-sectional area of the head portion is gradually reduced from one end close to the rod portion to one end far away from the rod portion.
In foretell high rigidity wear-resisting ball that shocks resistance, the external diameter of connecting portion is less than the external diameter of left hemisphere and right hemisphere, still includes the lacing tape of pressing and establishing on connecting portion, the both sides of lacing tape laminate with left hemisphere and right hemisphere respectively mutually.
In the high-hardness impact-resistant wear-resistant ball, two ends of the tightening strap are respectively provided with a locking hole penetrating through the tightening strap, when the tightening strap is arranged on the connecting part in a surrounding and pressing manner, the axial leads of the two locking holes are overlapped, and the locking pin shaft penetrates through the locking holes and is arranged on the tightening strap in a pressing manner.
In the above high-hardness impact-resistant wear-resistant ball, the wear-resistant ball body includes Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb, and Fe.
In the high-hardness impact-resistant wear-resistant ball, the wear-resistant ball body comprises 4.5-6.2% of Cr, 0.1-0.2% of C, 0.01-0.04% of P, 0.1-0.4% of Cu, 0.2-0.4% of Si, 0.5-0.7% of Mn, 0.1-0.4% of Mo, 1.2-3.6% of Ni, 0.01-0.04% of Al, 0.1-0.2% of V, 0.02-0.04% of B, 0.02-0.08% of Ti, 0.1-0.25% of Nb and the balance of Fe by mass fraction.
In the high-hardness impact-resistant wear-resistant ball, the wear-resistant ball body comprises 5.5% of Cr, 0.15% of C, 0.025% of P, 0.25% of Cu, 0.3% of Si, 0.6% of Mn, 0.25% of Mo, 2.4% of Ni, 0.25% of Al, 0.15% of V, 0.03% of B, 0.05% of Ti, 0.2% of Nb and the balance of Fe by mass fraction.
A manufacturing method of a high-hardness impact-resistant wear-resistant ball comprises the following steps:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the sphere obtained in the step one to 800-;
step three: and (3) heating the quenched steel ball obtained in the step two to 800 ℃ for heat preservation for 1-2h, cooling to 550 ℃ for heat preservation for 30-45min, discharging and naturally cooling to room temperature to obtain the wear-resistant ball body.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the buffering elastic cushion which is easy to disassemble and assemble is sleeved outside the wear-resistant ball body, so that the wear-resistant ball body is isolated from contact with rainwater and air, and meanwhile, collision among the wear-resistant ball bodies in the storage and transportation process can be prevented, and the wear-resistant ball bodies are prevented from being damaged in the storage and transportation process.
2. The wear-resistant ball prepared by the preparation method provided by the invention has ideal hardness, and the fineness of the ball mill during grinding can be ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
in the figure: the wear-resisting ball comprises a wear-resisting ball body 1, a buffering elastic cushion 2, a tightening belt 3, a locking hole 4, a locking pin shaft 5, a left hemisphere 21, a right hemisphere 22, a connecting part 23, a connecting head 24, a connecting groove 25, a rod part 26 and a head part 27.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
The embodiment provides a high-hardness impact-resistant wear-resistant ball, which is shown in fig. 1 and fig. 2, and includes a wear-resistant ball body 1 and a buffering elastic pad 2 disposed outside the wear-resistant ball body 1, where the buffering elastic pad 2 is made of an elastic material, for example, may be made of a rubber material, the buffering elastic pad 2 includes a left hemisphere 21 and a right hemisphere 22 detachably connected to each other, and when the left hemisphere 21 and the right hemisphere 22 are connected to each other, inner surfaces of the left hemisphere 21 and the right hemisphere 22 are both attached to an outer surface of the wear-resistant ball body 1.
According to the invention, when the wear-resistant ball body 1 needs to be stored and transported, the buffering elastic cushion 2 is coated on the surface of the wear-resistant ball body 1. When grinding is needed, the buffering elastic pad 2 is peeled off from the surface of the wear-resistant ball body 1. Since the cushion elastic pad 2 includes the left hemisphere 21 and the right hemisphere 22 detachably connected, it is convenient to disassemble and assemble the cushion elastic pad 2. According to the invention, the buffering elastic cushion 2 which is easy to disassemble and assemble is sleeved outside the wear-resistant ball body 1, so that the wear-resistant ball body 1 is isolated from contact with rainwater and air, collision among the wear-resistant ball bodies 1 in the storage and transportation process can be prevented, and the wear-resistant ball body 1 is prevented from being damaged in the storage and transportation process.
The wear-resistant ball body 1 comprises 6.2% of Cr, 0.1% of C, 0.01% of P, 0.1% of Cu, 0.2% of Si, 0.5% of Mn, 0.1% of Mo, 1.2% of Ni, 0.01% of Al, 0.1% of V, 0.02% of B, 0.02% of Ti, 0.1% of Nb and the balance of Fe by mass fraction.
As shown in fig. 2, the cushion 2 further includes a connecting portion 23, the left hemisphere 21 and the right hemisphere 22 are respectively provided with a connecting portion 23, the two connecting portions 23 are oppositely disposed, one of the connecting portions 23 protrudes with a connecting head 24, a corresponding position of the other connecting portion 24 is provided with a connecting groove 25 recessed toward the inside of the connecting portion 23, and the connecting head 24 and the connecting groove 25 are in insertion fit.
The left hemisphere 21 and the right hemisphere 22 are detachably connected with the connecting groove 25 through a connector 24 and a connecting groove 25 which can be matched with each other on the connecting portion 23.
Preferably, the connecting head 24 includes a shaft portion 26 and a head portion 27, which are fixedly connected, wherein an end of the shaft portion 26 away from the head portion 27 is fixedly connected to the connecting portion 23, and a cross-sectional area of the head portion 27 gradually decreases from an end close to the shaft portion 26 to an end away from the shaft portion 26. I.e. the head 27 may serve as a guide for the insertion of the coupling head 24 into the coupling recess 25.
As shown in fig. 2, the connecting portion 23 has an outer diameter smaller than the outer diameters of the left hemisphere 21 and the right hemisphere 22, and further includes a tightening band 3 pressed on the connecting portion 23, so that a groove is formed between the left hemisphere 21 and the right hemisphere 22 due to the smaller outer diameter of the connecting portion 23, and the tightening band 3 is fitted in the groove to ensure that the overall outer surface of the cushion elastic pad 2 after being wrapped is substantially spherical without any significant protruding structure. The two sides of the tightening strap 3 are respectively attached to the left hemisphere 21 and the right hemisphere 22, so that the stability of the tightening strap 3 can be improved and the lateral movement can be prevented. The both ends of lacing tape 3 respectively are equipped with a locking hole 4 that link up lacing tape 3, lacing tape 3 encircles and presses the axial lead of two locking holes 4 when establishing on connecting portion 23 and coincide each other, and locking round pin axle 5 runs through locking hole 4 and presses and establish on lacing tape 3, and locking round pin axle 5 runs through locking hole 4 so that the both ends of lacing tape 3 are relatively fixed.
Example 2
This example provides a high-hardness impact-resistant wear-resistant ball, which has a structure substantially the same as that of example 1, except for the composition of the wear-resistant ball body 1, and specifically, the wear-resistant ball body 1 includes, in mass fractions, 4.5% of Cr, 0.2% of C, 0.04% of P, 0.4% of Cu, 0.4% of Si, 0.7% of Mn, 0.4% of Mo, 3.6% of Ni, 0.04% of Al, 0.2% of V, 0.04% of B, 0.08% of Ti, 0.25% of Nb, and the balance of Fe.
Example 3
This example provides a high-hardness impact-resistant wear-resistant ball, which has a structure substantially the same as that of example 1, except for the composition of the wear-resistant ball body 1, and specifically, the wear-resistant ball body 1 includes, in mass fractions, 5.5% of Cr, 0.15% of C, 0.025% of P, 0.25% of Cu, 0.3% of Si, 0.6% of Mn, 0.25% of Mo, 2.4% of Ni, 0.25% of Al, 0.15% of V, 0.03% of B, 0.05% of Ti, 0.2% of Nb, and the balance of Fe.
Example 4
The embodiment provides a manufacturing method of a high-hardness impact-resistant wear-resistant ball, which comprises the following steps:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the sphere obtained in the step one to 800 ℃, preserving heat for 20min, heating to 1000 ℃, preserving heat for 2min, and quenching with water to obtain a quenched steel ball;
step three: and (3) heating the quenched steel ball obtained in the step two to 700 ℃, preserving heat for 1h, then cooling to 400 ℃, preserving heat for 30min, discharging from the furnace, and naturally cooling to room temperature to obtain the wear-resistant ball body 1.
Example 5
The embodiment provides a manufacturing method of a high-hardness impact-resistant wear-resistant ball, which comprises the following steps:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the sphere obtained in the step one to 900 ℃, preserving heat for 30min, heating to 1100 ℃, preserving heat for 5min, and quenching with water to obtain a quenched steel ball;
step three: and (3) heating the quenched steel ball obtained in the step two to 800 ℃, preserving heat for 2h, then cooling to 550 ℃, preserving heat for 45min, discharging from the furnace, and naturally cooling to room temperature to obtain the wear-resistant ball body 1.
Example 6
The embodiment provides a manufacturing method of a high-hardness impact-resistant wear-resistant ball, which comprises the following steps:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the spheres obtained in the step one to 850 ℃, preserving heat for 25min, heating to 1050 ℃, preserving heat for 3min, and quenching with water to obtain quenched steel balls;
step three: and (3) heating the quenched steel ball obtained in the step two to 750 ℃, preserving heat for 1.5h, then cooling to 450 ℃, preserving heat for 40min, discharging from the furnace, and naturally cooling to room temperature to obtain the wear-resistant ball body 1.
Comparative example 1
The present comparative example provides a method of manufacturing a wear-resistant ball, comprising the steps of:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the spherical shape obtained in the step one to 850 ℃, preserving heat for 25min, and quenching with water to obtain a quenched steel ball;
step three: and (3) heating the quenched steel ball obtained in the step two to 750 ℃, preserving heat for 1.5h, then cooling to 450 ℃, preserving heat for 40min, discharging from the furnace, and naturally cooling to room temperature to obtain the wear-resistant ball body 1.
Comparative example 2
The present comparative example provides a method of manufacturing a wear-resistant ball, comprising the steps of:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the sphere obtained in the step one to 850 ℃, heating to 1050 ℃, preserving heat for 3min, preserving heat for 25min, and quenching with water to obtain a quenched steel ball;
step three: and (3) heating the quenched steel ball obtained in the step two to 750 ℃, preserving heat for 1.5h, discharging and naturally cooling to room temperature to obtain the wear-resistant ball body 1.
Application example 1
A wear-resistant ball 1 was produced by the method described in example 6 using the composition of the wear-resistant ball body described in example 3;
a wear-resistant ball 2 was produced by the method described in comparative example 1, using the composition of the wear-resistant ball body described in example 3;
a wear-resistant ball 3 was produced by the method described in comparative example 2, using the composition of the wear-resistant ball body described in example 3;
the results of respective measurements of rockwell hardness of the wear- resistant balls 1, 2 and 3 using a metal hardness tester manufactured by feitai testing instruments ltd from shijiazha are shown in the following table:
and (4) analyzing results: from the above experimental data, it can be seen that although the chromium content in the wear-resistant ball is only 5.5%, the hardness of the wear-resistant ball 1 obtained already reaches the hardness standard of the high-chromium alloy wear-resistant ball, so that the intended purpose of the present invention is achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms of the wear-resistant ball body 1, the cushion elastic pad 2, the tightening band 3, the locking hole 4, the locking pin shaft 5, the left hemisphere 21, the right hemisphere 22, the connecting portion 23, the connecting head 24, the connecting groove 25, the rod portion 26, the head portion 27, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (9)
1. The utility model provides a wear-resisting ball of high rigidity impact resistance which characterized in that: including wear-resisting ball body (1) and setting buffering cushion (2) outside wear-resisting ball body (1), buffering cushion (2) are including dismantling left hemisphere (21) and right hemisphere (22) of connection, when left hemisphere (21) and right hemisphere (22) are connected, the internal surface of left hemisphere (21) and right hemisphere (22) all laminates with the surface of wear-resisting ball body (1) mutually.
2. The high hardness, impact resistant, abrasion resistant ball of claim 1 wherein: buffering cushion (2) still include connecting portion (23), respectively be equipped with one connecting portion (23) and two connecting portion (23) relative settings on left hemisphere (21) and right hemisphere (22), the protrusion has connector (24) on one of them connecting portion (23), and the relevant position of another connecting portion (24) has connecting groove (25) to connecting portion (23) inside sunken, connector (24) and connecting groove (25) are pegged graft and are cooperated.
3. The high hardness impact resistant abrasion resistant ball of claim 2 wherein: the connector (24) comprises a rod part (26) and a head part (27) which are fixedly connected, one end of the rod part (26), which is far away from the head part (27), is fixedly connected onto the connecting part (23), and the cross section area of the head part (27) is gradually reduced from one end, which is close to the rod part (26), to one end, which is far away from the rod part (26).
4. The high hardness impact resistant abrasion resistant ball of claim 2 wherein: the external diameter of connecting portion (23) is less than the external diameter of left hemisphere (21) and right hemisphere (22), still including pressing lacing tape (3) of establishing on connecting portion (23), the both sides of lacing tape (3) are laminated with left hemisphere (21) and right hemisphere (22) respectively mutually.
5. The high hardness impact resistant abrasion resistant ball of claim 4 wherein: the two ends of the binding belt (3) are respectively provided with a locking hole (4) which penetrates through the binding belt (3), the binding belt (3) is arranged around the axis lines of the two locking holes (4) when being pressed on the connecting part (23) to be superposed with each other, and the locking pin shaft (5) penetrates through the locking holes (4) and is pressed on the binding belt (3).
6. The high hardness, impact resistant, abrasion resistant ball of claim 1 wherein: the wear-resistant ball body (1) comprises Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe.
7. The high hardness impact resistant abrasion resistant ball of claim 6 wherein: the wear-resistant ball body (1) comprises 4.5-6.2% of Cr, 0.1-0.2% of C, 0.01-0.04% of P, 0.1-0.4% of Cu, 0.2-0.4% of Si, 0.5-0.7% of Mn, 0.1-0.4% of Mo, 1.2-3.6% of Ni, 0.01-0.04% of Al, 0.1-0.2% of V, 0.02-0.04% of B, 0.02-0.08% of Ti, 0.1-0.25% of Nb and the balance of Fe by mass fraction.
8. The high hardness impact resistant abrasion resistant ball of claim 7 wherein: the wear-resistant ball body (1) comprises 5.5% of Cr, 0.15% of C, 0.025% of P, 0.25% of Cu, 0.3% of Si, 0.6% of Mn, 0.25% of Mo, 2.4% of Ni, 0.25% of Al, 0.15% of V, 0.03% of B, 0.05% of Ti, 0.2% of Nb and the balance of Fe in mass fraction.
9. A manufacturing method of a high-hardness impact-resistant wear-resistant ball is characterized by comprising the following steps:
the method comprises the following steps: taking Cr, C, P, Cu, Si, Mn, Mo, Ni, Al, V, B, Ti, Nb and Fe according to the required mass fraction, melting and mixing uniformly, and casting to obtain a spherical casting;
step two: heating the sphere obtained in the step one to 800-;
step three: and (3) heating the quenched steel ball obtained in the step two to 800 ℃ for heat preservation for 1-2h, cooling to 550 ℃ for heat preservation for 30-45min, discharging and naturally cooling to room temperature to obtain the wear-resistant ball body (1).
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