CN113969331A - Production method of chromium alloy casting section with high wear resistance - Google Patents

Production method of chromium alloy casting section with high wear resistance Download PDF

Info

Publication number
CN113969331A
CN113969331A CN202111157437.2A CN202111157437A CN113969331A CN 113969331 A CN113969331 A CN 113969331A CN 202111157437 A CN202111157437 A CN 202111157437A CN 113969331 A CN113969331 A CN 113969331A
Authority
CN
China
Prior art keywords
wear resistance
casting
high wear
chromium alloy
casting section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111157437.2A
Other languages
Chinese (zh)
Other versions
CN113969331B (en
Inventor
李骏
李根有
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningguo Zhengxing Wear Resistant Materials Co ltd
Original Assignee
Ningguo Zhengxing Wear Resistant Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningguo Zhengxing Wear Resistant Materials Co ltd filed Critical Ningguo Zhengxing Wear Resistant Materials Co ltd
Priority to CN202111157437.2A priority Critical patent/CN113969331B/en
Publication of CN113969331A publication Critical patent/CN113969331A/en
Application granted granted Critical
Publication of CN113969331B publication Critical patent/CN113969331B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • 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
    • 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
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles

Abstract

The invention belongs to the technical field of wear-resistant materials, and particularly relates to a production method of a chromium alloy casting section with high wear resistance. Aiming at the problem that the wear resistance of a wear-resistant part in the prior art needs to be improved so as to ensure that relevant equipment can have a longer service life, the invention provides a production method of a chromium alloy casting section with high wear resistance, which comprises the following steps: proportioning raw materials according to needs, melting and mixing uniformly, and casting to obtain a cylindrical casting; heating the casting to 900 ℃ and 1000 ℃, preserving the heat for 30-60min, and quenching with water to obtain a quenched casting section; heating to 800 ℃ for temperature preservation for 30-60min, cooling to 550 ℃ for temperature preservation for 20-30min, heating to 700 ℃ for temperature preservation for 5-10min, discharging, and naturally cooling to room temperature to obtain the casting section body. The invention has a process of heating to the temperature close to the heating temperature after quenching in a short time after cooling, so that the wear resistance of the obtained casting section body is obviously improved.

Description

Production method of chromium alloy casting section with high wear resistance
Technical Field
The invention belongs to the technical field of wear-resistant materials, and particularly relates to a production method of a chromium alloy casting section with high wear resistance.
Background
With the rapid development of modern industry, mechanical equipment such as crushing, grinding, excavating, rolling and the like consumes a large amount of steel wear-resistant pieces. The wear resistance of the wear resistant part in the prior art needs to be improved so as to ensure that the relevant equipment can have a longer service life.
For example, the chinese invention patent discloses a wear-resistant casting and a method of manufacturing the same [ application No.: 201610219291.2], the invention comprising a substrate and a cemented carbide rod cast in said substrate; the matrix is austempered ductile iron which comprises, by mass, 3.6-4.5% of C, 1.4-2.4% of Si, 0.3-0.4% of Mn, 0.7-0.9% of Cu, 1.2-1.7% of Ni, 0.3-0.4% of Mo, 0.01-0.03% of P, 0.02-0.04% of S and the balance of Fe, and the space between adjacent hard alloy rods in the matrix is selected to be 5-6 mm, wherein the volume fraction of the hard alloy rods in the matrix is 3-5%, and the cross-sectional area of the hard alloy rods on the working surface is 6-8% of the total area of the working surface.
The invention has the advantages of high hardness, high strength, good toughness and the like, but the invention still does not solve the problems.
Disclosure of Invention
The invention aims to solve the problems and provides a method for producing a chromium alloy casting section with high wear resistance, which can produce a casting section with high wear resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production method of a chromium alloy casting section with high wear resistance comprises the following steps:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 900-;
step three: and (3) heating the quenched casting section obtained in the step two to 800 ℃ for heat preservation for 30-60min, cooling to 550 ℃ for 400 ℃ for heat preservation for 20-30min, heating to 700 ℃ for 650 ℃ within 5min, heat preservation for 5-10min, discharging and naturally cooling to room temperature to obtain the casting section body.
In the production method of the chromium alloy casting section with high wear resistance, the time of temperature return after temperature reduction in the third step is 2min, the temperature is returned to 680 ℃, and then the temperature is kept for 8 min.
In the above method for producing a chromium-based alloy cast strand having high wear resistance, the cast strand body comprises, in mass fraction, 4.8 to 6.6% of Cr, 0.05 to 0.2% of Sn, 1.0 to 1.4% of Zn, 0.1 to 0.2% of C, 0.1 to 0.2% of Cu, 0.2 to 0.4% of Si, 0.3 to 0.7% of Mn, 0.2 to 0.4% of Mo, 1.2 to 2.8% of Ni, 0.01 to 0.04% of Al, 0.1 to 0.2% of V, 0.02 to 0.04% of B, 0.02 to 0.08% of Ti, 0.1 to 0.25% of Nb, and the balance of Fe, respectively.
In the above-described method for producing a chromium-based alloy cast strand having high wear resistance, the cast strand body includes, in mass fractions, 5.7% of Cr, 0.1% of Sn, 1.2% of Zn, 0.15% of C, 0.15% of Cu, 0.3% of Si, 0.5% of Mn, 0.3% of Mo, 2.0% of Ni, 0.03% of Al, 0.15% of V, 0.03% of B, 0.05% of Ti, 0.18% of Nb, and the balance of Fe, respectively.
In the production method of the chromium alloy casting section with high wear resistance, the casting section body is also sleeved with a protective sleeve for preventing hard contact between the casting section bodies, and the protective sleeve is made of an elastic material.
In the production method of the chromium alloy casting section with high wear resistance, the casting section body is located in the containing space, one end of the casting section body is closed, the other end of the casting section body is provided with an opening, the opening is communicated with the containing space and the outside, the casting section body further comprises a closing piece, one end of the closing piece is connected to the casting section body, and the closing piece can be rotated to close the opening to isolate the containing space from the outside.
In the production method of the chromium alloy casting section with high wear resistance, one side of the protecting sleeve main body is also provided with an adjusting long hole which penetrates through the side wall of the protecting sleeve main body and is communicated with the accommodating space, and one end of the adjusting long hole extends to the opening.
In the above method for producing a chromium-based alloy cast strand having high wear resistance, the method comprises: the sealing part comprises a bottom plate and a sealing side plate which are fixedly connected, the bottom plate part and the protective sleeve main body are fixedly connected with one end of an opening, the sealing side plate is attached to the outer side of the adjusting long hole and seals the adjusting long hole, a top plate is fixedly connected to one end, far away from the bottom plate, of the sealing side plate, a locking protrusion is arranged on the bottom surface of the top plate, a locking groove which is sunken towards the inside of the protective sleeve main body is formed in the surface of the protective sleeve main body, and the locking protrusion is embedded in the locking groove and in interference fit with the locking groove.
In the above method for producing the cast segment of a chromium-based alloy having high wear resistance, the cross-sectional area of the locking projection is gradually reduced from the end close to the top plate to the end away from the top plate.
In the production method of the chromium alloy casting section with high wear resistance, the side surface of the protective sleeve main body is further provided with locking grooves recessed towards the interior of the protective sleeve main body, the inner surfaces of the closed side plates are protruded with locking ribs matched with the locking grooves, the locking ribs can be embedded in the locking grooves by rotating the closed side plates, the two locking grooves are symmetrically arranged on two sides of the adjusting long hole, and the length direction of the locking grooves is parallel to that of the adjusting long hole.
Compared with the prior art, the invention has the advantages that:
1. the invention has a process of heating to the temperature close to the heating temperature after quenching in a short time after cooling, so that the wear resistance of the obtained casting section body is obviously improved.
2. According to the invention, the casting section body is sleeved with the protective sleeve made of the elastic material, so that the contact between the casting section body and rainwater and air is isolated, meanwhile, the collision between the casting section bodies in the storage and transportation process can be prevented, and the damage to the casting section bodies in the storage and transportation process is avoided.
3. The protective sleeve has the advantages of simple structure, convenient assembly and disassembly and repeated use.
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 casting section comprises a casting section body 1, a protective sleeve 2, a protective sleeve main body 3, a closing piece 4, an adjusting long hole 5, a locking groove 6, a bottom plate 41, a closing side plate 42, a top plate 43, a locking protrusion 44, a locking groove 45 and a locking rib 46.
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 chromium-based alloy casting section with high wear resistance, which is shown in fig. 1 and fig. 2 and comprises a casting section body 1, wherein a protective sleeve 2 for preventing hard contact between the casting section bodies 1 is further sleeved outside the casting section body 1, and the protective sleeve 2 is made of an elastic material. The specific choice of the elastic material is not limited in the present invention, and may be, for example, a rubber material or a silicone material.
According to the invention, the protective sleeve 2 made of elastic material is sleeved outside the casting section body 1, so that the contact between the casting section body 1 and rainwater and air is isolated, meanwhile, the collision between the casting section bodies 1 in the storage and transportation process can be prevented, and the casting section body 1 is prevented from being damaged in the storage and transportation process.
The cast strand body 1 comprises, in mass fractions, 4.8% Cr, 0.2% Sn, 1.4% Zn, 0.2% C, 0.2% Cu, 0.4% Si, 0.7% Mn, 0.4% Mo, 2.8% Ni, 0.04% Al, 0.2% V, 0.04% B, 0.08% Ti, 0.25% Nb and the balance Fe, respectively.
As shown in fig. 2, the protective sleeve 2 comprises a protective sleeve main body 3 with an accommodating space therein, the casting section body 1 is located in the accommodating space, one end of the protective sleeve main body 3 is closed, the other end of the protective sleeve main body is provided with an opening, the opening is communicated with the accommodating space and the outside, the protective sleeve 2 further comprises a closing member 4, one end of the closing member 4 is connected to the protective sleeve main body 3, and the opening can be closed by rotating the closing member 4 to isolate the accommodating space from the outside.
Preferably, one side of the protecting jacket main body 3 is further provided with an adjusting long hole 5 which penetrates through the side wall of the protecting jacket main body 3 and is communicated with the accommodating space, and one end of the adjusting long hole 5 extends to the opening. The arrangement of the elastic material enables the protective sleeve main body 3 to have certain adjusting capacity in the circumferential direction, and the casting section body 1 is convenient to put into the protective sleeve main body 3.
As shown in fig. 2, the closing element 4 includes a bottom plate 41 and a closed side plate 42, which are fixedly connected, a part of the bottom plate 41 is fixedly connected with one end of the shield main body 3, which is provided with an opening, the closed side plate 42 is attached to the outer side of the adjustment long hole 5 and closes the adjustment long hole 5, one end of the closed side plate 42, which is away from the bottom plate 41, is also fixedly connected with a top plate 43, a locking protrusion 44 is provided on the bottom surface of the top plate 43, a locking groove 45, which is recessed towards the inside of the shield main body 3, is provided on the surface of the shield main body 3, and the locking protrusion 44 is embedded in the locking groove 45 and is in interference fit with the locking groove 45. When the locking protrusion 44 is embedded in the locking groove 45, the whole protective cover main body 3 forms a relatively closed space, and the casting section body 1 is better covered in the protective cover main body 3.
Preferably, the length of the arc segment of the fixed connection between the bottom plate 41 and the protective cover main body 3 is less than one half of the circumference of the bottom plate 41. Thus, the bottom plate 41 is fixed at the bottom of the protective sleeve main body 3, and the casting section body 1 can be conveniently coated in the protective sleeve main body 3.
Preferably, the locking protrusions 44 and the locking grooves 45 are arranged in a one-to-one correspondence manner and are respectively provided with a plurality of locking grooves 45, and the plurality of locking grooves 45 are sequentially arranged along the radial direction of the protective sleeve main body 3. The plurality of locking protrusions 44 and locking grooves 45 can enhance the locking force to prevent the casting section body 1 from falling out of the jacket main body 3 during transportation or storage.
Preferably, the cross-sectional area of the locking protrusion 44 is gradually reduced from the end close to the top plate 43 to the end far from the top plate 43. This serves as a guide for inserting the locking projection 44 into the locking groove 45.
As shown in fig. 2, the side surface of the protective cover main body 3 is further provided with a locking groove 6 recessed towards the inside of the protective cover main body 3, the inner surface of the closed side plate 42 is protruded with a locking rib 46 adapted to the locking groove 6, and the locking rib 46 can be embedded in the locking groove 6 by rotating the closed side plate 42.
Because be equipped with at the 3 lateral walls of lag main part and adjust slot hole 5, make things convenient for cast section body 1 cladding also to lead to lag main part 3 itself to tighten the power not enough in lag main part 3, so set up the degree of tightening of lag main part 3 to cast section body 1 with the assurance locking rib 46 and the locking rib 46 of mutually supporting.
Preferably, two locking grooves 6 are symmetrically arranged on two sides of the long adjusting hole 5, and the length direction of the locking grooves 6 is parallel to the length direction of the long adjusting hole 5. This ensures an even distribution of forces.
Example 2
This example provides a chromium-based alloy cast segment with high wear resistance, which has a specific structure substantially the same as that of example 1, except for the composition of the cast segment body 1, and specifically, the cast segment body 1 includes, in mass fractions, 6.6% of Cr, 0.05% of Sn, 1.0% of Zn, 0.1% of C, 0.1% of Cu, 0.2% of Si, 0.3% of Mn, 0.2% 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, respectively.
Example 3
This example provides a chromium-based alloy cast segment having high wear resistance, which has a structure substantially the same as that of example 1, except that the cast segment body 1 has a composition, and specifically, the cast segment body 1 includes, in mass fractions, 5.7% of Cr, 0.1% of Sn, 1.2% of Zn, 0.15% of C, 0.15% of Cu, 0.3% of Si, 0.5% of Mn, 0.3% of Mo, 2.0% of Ni, 0.03% of Al, 0.15% of V, 0.03% of B, 0.05% of Ti, 0.18% of Nb, and the balance Fe
Example 4
The embodiment provides a production method of a chromium alloy casting section with high wear resistance, which comprises the following steps:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 1000 ℃, preserving heat for 60min, and quenching with water to obtain a quenched casting section;
step three: and (3) heating the quenched casting section obtained in the step (II) to 800 ℃, preserving heat for 60min, cooling to 550 ℃, preserving heat for 30min, heating to 700 ℃ for 5min, preserving heat for 10min, discharging from the furnace, and naturally cooling to room temperature to obtain a casting section body 1.
Example 5
The embodiment provides a production method of a chromium alloy casting section with high wear resistance, which comprises the following steps:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 900-DEG C, preserving heat for 30-60min, and quenching with water to obtain a quenched casting section;
step three: and (3) heating the quenched casting section obtained in the step two to 700 ℃, preserving heat for 30min, cooling to 400 ℃, preserving heat for 20min, heating to 650 ℃ for 1min, preserving heat for 5min, discharging from the furnace, and naturally cooling to room temperature to obtain a casting section body 1.
Example 6
The embodiment provides a production method of a chromium alloy casting section with high wear resistance, which comprises the following steps:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 950 ℃, preserving heat for 45min, and quenching with water to obtain a quenched casting section;
step three: and (3) heating the quenched casting section obtained in the step two to 750 ℃, preserving heat for 45min, cooling to 500 ℃, preserving heat for 25min, heating to 680 ℃ for 2min, preserving heat for 8min, discharging from the furnace, and naturally cooling to room temperature to obtain a casting section body 1.
Comparative example 1
The comparative example provides a method for producing a chromium alloy cast section, comprising the steps of:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 950 ℃, preserving heat for 45min, and quenching with water to obtain a quenched casting section;
step three: and (3) heating the quenched casting section obtained in the step two to 750 ℃, preserving heat for 45min, cooling to 500 ℃, preserving heat for 25min, discharging from the furnace, and naturally cooling to room temperature to obtain a casting section body 1.
Comparative example 2
The comparative example provides a method for producing a chromium alloy cast section, comprising the steps of:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 950 ℃, preserving heat for 45min, and quenching with water to obtain a quenched casting section;
step three: and (3) heating the quenched casting section obtained in the step two to 750 ℃, preserving heat for 45min, cooling to 500 ℃, preserving heat for 25min, heating to 680 ℃ for 10min, preserving heat for 8min, discharging from the furnace, and naturally cooling to room temperature to obtain a casting section body 1.
Comparative example 3
The comparative example provides a method for producing a chromium alloy cast section, comprising the steps of:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 950 ℃, preserving heat for 45min, and quenching with water to obtain a quenched casting section;
step three: and (3) heating the quenched casting section obtained in the step two to 750 ℃, preserving heat for 45min, cooling to 500 ℃, preserving heat for 25min, heating to 580 ℃ for 2min, preserving heat for 8min, discharging from the furnace, and naturally cooling to room temperature to obtain a casting section body 1.
Application example 1
A cast strand 1 was produced by the method described in example 6, using the composition of the cast strand body described in example 3;
a cast strand 2 was produced by the method described in comparative example 1, using the composition of the cast strand body described in example 3;
a cast strand 3 was produced by the method described in comparative example 2, using the composition of the cast strand body described in example 3;
a cast strand 4 was produced by the method described in comparative example 3, using the composition of the cast strand body described in example 3;
taking the casting sections 1-4 respectively, and measuring the mass m before the experimentFront sideAnd then performing a wear-resisting experiment under the same experiment conditions by using a ZT-5612 alloy wear-resisting tester produced by Guangdong Zhongtian instruments Ltd, wherein after the experiment is finished, the mass before the experiment is measured to be mRear endCalculating the wear rate according to the formula: s ═ mFront side-mRear end)÷mFront sideX 100%, the results are shown in the following table:
Figure BDA0003289175150000101
and (4) analyzing results: from the above experimental data, it can be seen that the final wear rate of the casting segment 1 is much less than the wear rates of the casting segments 2-4 under the same experimental conditions, thus achieving the intended purpose of the present invention.
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 cast section body 1, shield sleeve 2, shield sleeve main body 3, closure 4, adjustment slot 5, locking groove 6, bottom plate 41, closure side plate 42, top plate 43, locking projection 44, locking groove 45, locking rib 46, 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 (10)

1. A production method of a chromium alloy casting section with high wear resistance is characterized by comprising the following steps:
the method comprises the following steps: taking Cr, Sn, Zn, C, 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 cylindrical casting;
step two: heating the cylindrical casting obtained in the step one to 900-;
step three: and (3) heating the quenched casting section obtained in the step two to 800 ℃ for heat preservation for 30-60min, cooling to 550 ℃ for 400 ℃ for heat preservation for 20-30min, heating to 700 ℃ for 650 ℃ within 5min, preserving heat for 5-10min, discharging and naturally cooling to room temperature to obtain the casting section body (1).
2. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 1, wherein: and in the third step, the time of temperature return after temperature reduction is 2min, the temperature is returned to 680 ℃, and then the temperature is kept for 8 min.
3. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 1, wherein: the cast segment body (1) comprises 4.8-6.6% of Cr, 0.05-0.2% of Sn, 1.0-1.4% of Zn, 0.1-0.2% of C, 0.1-0.2% of Cu, 0.2-0.4% of Si, 0.3-0.7% of Mn, 0.2-0.4% of Mo, 1.2-2.8% 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.
4. A method for producing a chromium alloy cast strand having high wear resistance as defined in claim 3, wherein: the cast segment body (1) comprises 5.7% of Cr, 0.1% of Sn, 1.2% of Zn, 0.15% of C, 0.15% of Cu, 0.3% of Si, 0.5% of Mn, 0.3% of Mo, 2.0% of Ni, 0.03% of Al, 0.15% of V, 0.03% of B, 0.05% of Ti, 0.18% of Nb and the balance of Fe by mass fraction.
5. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 1, wherein: the casting section body (1) is further sleeved with a protecting sleeve (2) used for preventing hard contact between the casting section bodies (1), and the protecting sleeve (2) is made of elastic materials.
6. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 5, wherein: lag (2) have accommodation space's lag main part (3) including inside, cast section body (1) is located accommodation space, lag main part (3) one end is sealed, and the other end has the opening, opening intercommunication accommodation space and external world, lag (2) still include closure (4), closure (4) one end is connected on lag main part (3), and it makes accommodation space isolated with the external world to rotate closure (4) and can seal the opening.
7. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 6, wherein: one side of the protective sleeve main body (3) is further provided with an adjusting long hole (5) communicated with the accommodating space through the side wall of the protective sleeve main body (3), and one end of the adjusting long hole (5) extends to the opening.
8. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 7, wherein: closure member (4) are including fixed connection's bottom plate (41) and closed side plate (42), and bottom plate (41) part is equipped with open-ended one end fixed connection with lag main part (3), and closed side plate (42) laminating is adjusting slot hole (5) outside and sealing regulation slot hole (5), closed side plate (42) keep away from bottom plate (41) one end still fixedly connected with roof (43), roof (43) bottom surface has locking protrusion (44), lag main part (3) surface is equipped with locking recess (45) to lag main part (3) inside sunken, locking protrusion (44) gomphosis in locking recess (45) and with locking recess (45) interference fit.
9. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 8, wherein: the cross-sectional area of the locking protrusion (44) is gradually reduced from one end close to the top plate (43) to one end far away from the top plate (43).
10. The method for producing a chromium alloy cast strand having high wear resistance as defined in claim 8, wherein: lag main part (3) side still is equipped with locking groove (6) to the inside sunken of lag main part (3), closed curb plate (42) internal surface salient have with locking groove (6) looks adaptation locking rib (46), rotate closed curb plate (42) and can make locking rib (46) gomphosis in locking groove (6), locking groove (6) are equipped with two and the symmetry sets up in adjusting slot hole (5) both sides, the length direction of locking groove (6) parallels with the length direction who adjusts slot hole (5).
CN202111157437.2A 2021-09-30 2021-09-30 Production method of chromium alloy casting section with high wear resistance Active CN113969331B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111157437.2A CN113969331B (en) 2021-09-30 2021-09-30 Production method of chromium alloy casting section with high wear resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111157437.2A CN113969331B (en) 2021-09-30 2021-09-30 Production method of chromium alloy casting section with high wear resistance

Publications (2)

Publication Number Publication Date
CN113969331A true CN113969331A (en) 2022-01-25
CN113969331B CN113969331B (en) 2023-04-07

Family

ID=79587070

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111157437.2A Active CN113969331B (en) 2021-09-30 2021-09-30 Production method of chromium alloy casting section with high wear resistance

Country Status (1)

Country Link
CN (1) CN113969331B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2113495C1 (en) * 1996-01-23 1998-06-20 Кульбовский Иван Кузьмич Method of manufacturing cast blank of wear-resistant cast iron for quick-wearable parts
US20110114229A1 (en) * 2009-08-20 2011-05-19 Southern Cast Products, Inc. Ausferritic Wear-Resistant Steel Castings
CN106636906A (en) * 2016-12-28 2017-05-10 芜湖市永帆精密模具科技有限公司 Low-carbon, corrosion-resisting, high-strength and wear-resisting steel ball and preparation method thereof
CN209040767U (en) * 2018-11-21 2019-06-28 东营博洋石油机械有限公司 A kind of anticorrosive abrasion-proof sucker rod
CN114635025A (en) * 2022-01-06 2022-06-17 盐城市联鑫钢铁有限公司 45 steel round bar and production process method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2113495C1 (en) * 1996-01-23 1998-06-20 Кульбовский Иван Кузьмич Method of manufacturing cast blank of wear-resistant cast iron for quick-wearable parts
US20110114229A1 (en) * 2009-08-20 2011-05-19 Southern Cast Products, Inc. Ausferritic Wear-Resistant Steel Castings
CN106636906A (en) * 2016-12-28 2017-05-10 芜湖市永帆精密模具科技有限公司 Low-carbon, corrosion-resisting, high-strength and wear-resisting steel ball and preparation method thereof
CN209040767U (en) * 2018-11-21 2019-06-28 东营博洋石油机械有限公司 A kind of anticorrosive abrasion-proof sucker rod
CN114635025A (en) * 2022-01-06 2022-06-17 盐城市联鑫钢铁有限公司 45 steel round bar and production process method

Also Published As

Publication number Publication date
CN113969331B (en) 2023-04-07

Similar Documents

Publication Publication Date Title
CN105821297B (en) A kind of high Cr-V-Ti alloy iron roll and preparation method thereof
CN104404191B (en) A kind of casting technique of wear-resisting low pore cable testing bridge
CN110565048B (en) Heat treatment process for improving hot hardness and high-temperature wear resistance of hot die steel
CN102251166A (en) Manufacture method of slip sheet of air conditioner compressor
CN106834888B (en) A kind of high-strength abrasion-proof cast steel lining board and preparation method thereof
CN113969331B (en) Production method of chromium alloy casting section with high wear resistance
CN113523201A (en) Preparation method of high-wear-resistance nodular cast iron roller for hot continuous rolling and steckel mill
EP0759519A2 (en) Piston ring for internal combustion engine
CN109385573A (en) Brake disc of high-speed train alloy cast steel material and preparation method thereof
EP2627466B1 (en) Method for producing a piston ring having embedded particles
CN216187594U (en) Chromium alloy casting section with high wear resistance
CN112575240A (en) Manufacturing method of compressor piston and compressor piston
CN112899555A (en) High-chromium cast iron wear-resistant material and preparation method thereof
CN104948765A (en) Cryogenic ball valve
CN106676380B (en) A kind of complex alloy cast-steel lining board of grinder and preparation method thereof
CN106402333A (en) Wear-resisting gear
CN110373614A (en) A kind of abrasion resistant cast steel and preparation method thereof
CN106282804B (en) A kind of high abrasion high manganese cast steel of Cr Al Nb V alloys
CN105986192A (en) Novel high-speed steel
CN111996439A (en) Large-scale high-chromium iron roll collar and preparation method of assembly type roll thereof
CN105881824B (en) Automobile storage box injection mold
CN109014044A (en) A kind of preparation method of rich chromium cast iron tup
CN103938117A (en) Anti-corrosion and anti-wear high manganese steel and preparation method thereof
CN107893220A (en) A kind of collapsible inner hexagon spanner
CN109182896A (en) A kind of 175MPa movable elbow material and heat treatment process

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant