CN114472856A - Roller tooth sleeve of steel slag treatment crushing roller press and production process - Google Patents
Roller tooth sleeve of steel slag treatment crushing roller press and production process Download PDFInfo
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- CN114472856A CN114472856A CN202210389361.4A CN202210389361A CN114472856A CN 114472856 A CN114472856 A CN 114472856A CN 202210389361 A CN202210389361 A CN 202210389361A CN 114472856 A CN114472856 A CN 114472856A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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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
- C22C38/18—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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Abstract
The invention relates to the technical field of alloy casting, and provides a production process of a roller tooth gear sleeve of a steel slag treatment crushing roller press, which comprises the following steps: s1, placing the cylinder in a mold, and casting the high-tungsten vanadium-titanium alloy to prepare the anti-abrasion body; s2, casting low alloy steel on the anti-abrasion body, and enabling the low alloy steel to cover or cover the anti-abrasion body; s3, removing casting corners, sandblasting, polishing and then processing according to the size of the roller teeth to obtain a gear sleeve; the high-tungsten vanadium-titanium alloy comprises the following components in percentage by weight: 10 to 14 percent of W, 1.5 to 3 percent of Ti, 0.3 to 0.8 percent of Mo, 1.5 to 3 percent of V, 1 to 2 percent of Ni, 0.7 to 1 percent of Cu, 12 to 18 percent of Cr, 0.5 percent of Si and the balance of Fe; the cylinder is made of ceramic. Through the technical scheme, the problems that the roller gear sleeve of the roller press in the prior art cannot meet the use requirement of steel slag crushing or low crushing efficiency and is poor in wear resistance are solved.
Description
Technical Field
The invention relates to the technical field of alloy casting, in particular to a roller tooth sleeve of a steel slag treatment crushing roller press and a production process thereof.
Background
In the production process of a full-flow steel enterprise, a converter in a steel-making work area can generate a large amount of steel slag, the components of the steel slag are complex and mainly comprise silicate and oxide, the steel slag has high hardness, high temperature (800-. The crushing roller press based on the steel slag processing system is produced, and the roller tooth sleeve abrasion loss of the roller press is particularly serious due to the particularity, high temperature and high hardness of steel slag materials.
In the production operation of the roller press, the steel slag falls into a slag pool in a thick solid state of 800 plus 1000 ℃, the state of the steel slag is gradually cooled from the thick solid state to a solid state with high hardness (Mohs 6-8), the specific gravity is high, the impact wear is serious, and the alloy material performance of the rolling roller tooth component directly determines the sustainable operation period and the production efficiency of equipment. Under the repeated erosion of the roll squeezer tooth sleeve under the working condition of high-temperature oxygen-enriched water spraying, the microstructure changes, electrons of partial atoms escape into free electrons, and the material performance is attenuated and softened so that the abrasion is accelerated. The low alloy material is degraded in an accelerated manner in a long-term high-temperature extreme environment.
The roller tooth sleeve of the crushing roller press of the traditional steel slag treatment system is usually made of high-chromium alloy cast steel material, heat-resistant cast steel material, low-alloy steel material and the like, and the materials have the technical problems of single applicable working condition and incapability of being applied to the practical application of complex working conditions.
Several general materials present technical application problems as follows:
(1) the high-chromium alloy cast steel material has higher hardness, good toughness and excellent impact and abrasion resistance, but the actual working condition is that the temperature of the steel slag is 800-1000 ℃ or even more than 1000 ℃, and the high-chromium alloy cast steel material is annealed and softened at the temperature, so that the abrasion resistance is greatly reduced.
(2) The heat-resistant steel alloy material has excellent high-temperature resistance, good toughness and good impact and wear resistance, but has general hardness (HRC 40-58), and the service life is obviously greatly reduced due to the use working condition under the hardness.
(3) The low alloy material has general high temperature resistance, but excellent toughness and weldability, has the problems of poor impact and abrasion resistance and low hardness (HRC 15-20), and the service life of the material is greatly reduced under the working condition of high-temperature and high-hardness steel slag treatment.
Disclosure of Invention
The invention provides a production process of a roller tooth sleeve of a steel slag treatment crushing roller press, and solves the problems that the roller tooth sleeve of the roller press in the prior art cannot meet the use requirement of steel slag crushing or low crushing efficiency, and the roller tooth sleeve is poor in wear resistance.
The technical scheme of the invention is as follows:
the production process of the roller tooth sleeve of the steel slag treatment crushing roller press is characterized by comprising the following steps of:
s1, placing the cylinder in a mold, and casting the high-tungsten vanadium-titanium alloy to prepare the anti-abrasion body;
s2, casting low alloy steel on the anti-abrasion body, and enabling the low alloy steel to cover or cover the anti-abrasion body;
s3, removing casting corners, sandblasting, polishing and then processing according to the size of the roller teeth to obtain a gear sleeve;
the high-tungsten vanadium-titanium alloy comprises the following components in percentage by weight: 10 to 14 percent of W, 1.5 to 3 percent of Ti, 0.3 to 0.8 percent of Mo, 1.5 to 3 percent of V, 1 to 2 percent of Ni, 0.7 to 1 percent of Cu, 12 to 18 percent of Cr, 0.5 percent of Si and the balance of Fe;
the cylinder is made of ceramic.
As a further technical scheme, the high-tungsten vanadium titanium alloy comprises the following components in percentage by weight: 10 to 11 percent of W, 2 to 3 percent of Ti, 0.6 to 0.8 percent of Mo, 1.5 to 2 percent of V, 1 to 2 percent of Ni, 0.8 to 1 percent of Cu, 12 to 18 percent of Cr, 0.5 percent of Si and the balance of Fe.
As a further technical solution, in the step S2, during casting, the low alloy steel covers the wear-resistant body to leave a machining allowance, so that the allowance satisfies that the gear sleeve can be connected to the gear seat.
As a further technical scheme, the ceramic is 92 corundum ceramic.
As a further technical scheme, the tooth sleeve prepared by the production process of the roller tooth sleeve of the steel slag treatment crushing roller press comprises an anti-grinding body and a framework, wherein a cavity for accommodating roller teeth is formed in one end, far away from the anti-grinding body, of the framework, a plurality of cylinders are arranged inside the anti-grinding body, and the anti-grinding body is made of the high-tungsten vanadium-titanium alloy.
As a further technical solution, the skeleton is made of low alloy steel.
As a further technical scheme, the type of the low alloy steel is 2Cr 13.
As a further technical scheme, the low alloy steel is selected according to actual working conditions, but is not limited to low alloy 2Cr 13.
The invention has the beneficial effects that:
1. the invention provides a production process of a roller tooth sleeve of a steel slag treatment crushing roller press, which adopts casting technology casting and integral molding and integral casting synthesis. Because the traditional roller tooth sleeve is made of common carbon steel serving as a raw material and a flange is welded, the carbon steel becomes soft and abraded under a long-term high-temperature state, the size is changed, the limit gap of a tooth column of the tooth sleeve is increased, and the tooth sleeve is cracked and falls off. According to the invention, through the casting process and the specific alloy composition, the microstructure of the prepared gear sleeve is not changed even under the repeated erosion of the gear sleeve under the working condition of high-temperature oxygen-enriched water spraying, and the gear sleeve has stable electrons and good wear resistance.
2. According to the invention, aiming at a special precision casting process, a specific high-tungsten vanadium titanium alloy is adopted as an alloy material of a section with serious front section abrasion, and a heat-resistant wear-resistant alloy steel with good weldability is adopted at a rear section, so that the cost is saved, and the service performance of the gear sleeve can be ensured. In the high-tungsten vanadium-titanium alloy, tungsten can improve the red hardness of the alloy, tungsten and titanium improve the wear resistance, vanadium can play a role in refining crystal grains, molybdenum and nickel can ensure that the microstructure of the alloy is changed at high temperature, all components are matched with each other, and finally the prepared gear sleeve has excellent performance. However, in the present invention, the addition amounts of tungsten and titanium are not too large, which makes it difficult to realize casting molding and to tightly bond with the ceramic cylinder, which makes it difficult to ensure the molding effect, and the addition amount is too small which makes the hardness not meet the use requirement, resulting in poor wear resistance.
3. The gear sleeve has good high temperature resistance, does not generate annealing softening when processing high-temperature steel slag, and has high hardness and excellent wear resistance. The wear-resistant body of the gear sleeve in the invention takes tungsten and titanium as main components, and the wear-resistant body of the low-alloy cast steel gear sleeve commonly used in the market at present is a martensite carbide structure. When the traditional gear sleeve is actually applied to the roller gear of the roller press, the gear sleeve generally needs to be replaced once after 2.5-3 months, but the replacement period of the gear sleeve is about 8-12 months, so that after the service life is prolonged, the annual investment of gear sleeve accessories of the roller press can be reduced by about 25% -35%, and the traditional gear sleeve also needs a large amount of labor cost due to replacement and installation, so that the construction cost can be reduced after the replacement period is reduced, and the safety risk during construction can also be reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a front view of a tooth sleeve of the present invention;
FIG. 2 is a top plan view of the tooth sleeve of the present invention;
FIG. 3 is a bottom plan view of the tooth sleeve of the present invention;
in the figure, 1 is the antiwear body, 2 is the skeleton, 3 is the cylinder, 4 is the cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
Example 1
The production process of the roller tooth sleeve of the steel slag treatment crushing roller press comprises the following steps:
s1, placing the ceramic cylinder in a mold, and casting the high-tungsten vanadium-titanium alloy to prepare the anti-abrasion body;
s2, casting 2Cr13 low alloy steel on the anti-abrasion body, enabling the low alloy steel to coat the anti-abrasion body, and reserving machining allowance so that the allowance can meet the requirement that the gear sleeve can be connected to the gear seat;
s3, removing casting corners, sandblasting, polishing and then processing according to the size of the roller teeth to obtain a gear sleeve;
high tungsten vanadium titanium alloy: 10% of W, 2% of Ti, 0.6% of Mo, 1.5% of V, 2% of Ni, 0.8% of Cu, 18% of Cr, 0.5% of Si and the balance of Fe;
the manufactured gear sleeve is shown in the front view, the top view and the bottom view respectively in fig. 1, 2 and 3 and comprises an anti-grinding body 1 and a framework 2, wherein a cavity 4 for accommodating a roller tooth is formed in one end, far away from the anti-grinding body 1, of the framework 2, a plurality of cylinders 3 are arranged inside the anti-grinding body 1, and the anti-grinding body 1 is made of the high-tungsten vanadium titanium alloy.
Example 2
The production process of the roller tooth sleeve of the steel slag treatment crushing roller press comprises the following steps:
s1, placing the ceramic cylinder in a mold, and casting the high-tungsten vanadium-titanium alloy to prepare the anti-abrasion body;
s2, casting 2Cr13 low alloy steel on the anti-abrasion body, enabling the low alloy steel to coat the anti-abrasion body, and reserving machining allowance so that the allowance can meet the requirement that the gear sleeve can be connected to the gear seat;
s3, removing casting corners, sandblasting, polishing and then processing according to the size of the roller teeth to obtain a gear sleeve;
high tungsten vanadium titanium alloy: 12% of W, 3% of Ti, 0.8% of Mo, 2% of V, 1% of Ni, 1% of Cu, 12% of Cr, 0.5% of Si and the balance of Fe;
the prepared gear sleeve comprises an anti-grinding body 1 and a framework 2, wherein the framework 2 is far away from one end of the anti-grinding body 1 and is provided with a cavity 4 for accommodating roller teeth, a plurality of cylinders 3 are arranged inside the anti-grinding body 1, and the anti-grinding body 1 is made of high-tungsten vanadium-titanium alloy.
Example 3
The production process of the roller tooth sleeve of the steel slag treatment crushing roller press comprises the following steps:
s1, placing the ceramic cylinder in a mold, and casting the high-tungsten vanadium-titanium alloy to prepare the anti-abrasion body;
s2, casting 2Cr13 stainless steel on the wear-resistant body;
s3, removing casting corners, sandblasting, polishing and then processing according to the size of the roller teeth to obtain a gear sleeve;
high tungsten vanadium titanium alloy: 11% of W, 1.5% of Ti, 0.3% of Mo, 3% of V, 1.5% of Ni, 0.7% of Cu, 15% of Cr, 0.5% of Si and the balance of Fe;
the manufactured gear sleeve is shown in the front view, the top view and the bottom view respectively in fig. 1, 2 and 3 and comprises an anti-grinding body 1 and a framework 2, wherein a cavity 4 for accommodating a roller tooth is formed in one end, far away from the anti-grinding body 1, of the framework 2, a plurality of cylinders 3 are arranged inside the anti-grinding body 1, and the anti-grinding body 1 is made of the high-tungsten vanadium titanium alloy.
The rockwell hardness of the high tungsten vanadium titanium alloys of examples 1-3 were HRC81, HRC84, HRC75, respectively.
The results of the tooth sleeve prepared in the examples after being applied to hey steel pavilion steel limited were compared with the results of the conventional low-alloy cast steel tooth sleeve, and the results are shown in table 1.
Table 1 comparison of performance of gear sleeve of the embodiment of the present invention with that of conventional gear sleeve
The evaluation standard of the high-temperature wear resistance is to observe whether the front section of the gear sleeve is obviously worn or not after being normally used for eight weeks under the same working condition, the traditional low-alloy cast steel gear sleeve is seriously worn, and the gear sleeve does not have the phenomena of obvious wear on the surface of a steel strip, scratch and the like.
The tooth sleeve in the embodiment 1 of the invention has a perfect surface, no wear, no pull mark and high temperature resistance after eight weeks of use, while the front section of the tooth sleeve is seriously worn and obvious pull mark and scratch phenomena appear after three weeks of use of the traditional low-alloy cast steel tooth sleeve. The gear sleeve has high temperature resistance and hardness, so that the wear resistance and the service life of the gear sleeve can be improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The production process of the roller tooth sleeve of the steel slag treatment crushing roller press is characterized by comprising the following steps of:
s1, placing the cylinder in a mold, and casting the high-tungsten vanadium-titanium alloy to prepare the anti-abrasion body;
s2, casting low alloy steel on the anti-abrasion body, and enabling the low alloy steel to cover or cover the anti-abrasion body;
s3, removing casting corners, sandblasting, polishing and then processing according to the size of the roller teeth to obtain a gear sleeve;
the high-tungsten vanadium-titanium alloy comprises the following components in percentage by weight: 10 to 14 percent of W, 1.5 to 3 percent of Ti, 0.3 to 0.8 percent of Mo, 1.5 to 3 percent of V, 1 to 2 percent of Ni, 0.7 to 1 percent of Cu, 12 to 18 percent of Cr, 0.5 percent of Si and the balance of Fe;
the cylinder is made of ceramic.
2. The production process of the steel slag treatment crushing roller press roller tooth sleeve as claimed in claim 1, wherein the high-tungsten vanadium titanium alloy comprises the following components in percentage by weight: 10 to 11 percent of W, 2 to 3 percent of Ti, 0.6 to 0.8 percent of Mo, 1.5 to 2 percent of V, 1 to 2 percent of Ni, 0.8 to 1 percent of Cu, 12 to 18 percent of Cr, 0.5 percent of Si and the balance of Fe.
3. The process for producing a steel slag treatment crushing roller press roller tooth sleeve according to claim 1, wherein in the step S2, the low alloy steel covers the antiwear body to leave machining allowance during casting.
4. The tooth sleeve prepared by the production process of the steel slag treatment crushing roller press roller tooth sleeve is characterized by comprising an anti-grinding body (1) and a framework (2), wherein one end, far away from the anti-grinding body (1), of the framework (2) is provided with a cavity (4) for accommodating roller teeth, a plurality of cylinders (3) are arranged inside the anti-grinding body (1), and the anti-grinding body (1) is made of the high-tungsten vanadium titanium alloy.
5. Tooth sleeve according to claim 4, characterized in that the skeleton (2) is made of low-alloy steel.
6. The gear sleeve according to claim 5, wherein the low alloy steel is 2Cr 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210389361.4A CN114472856B (en) | 2022-04-14 | 2022-04-14 | Roller tooth sleeve of steel slag treatment crushing roller press and production process |
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| CN202210389361.4A CN114472856B (en) | 2022-04-14 | 2022-04-14 | Roller tooth sleeve of steel slag treatment crushing roller press and production process |
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| CN114472856A true CN114472856A (en) | 2022-05-13 |
| CN114472856B CN114472856B (en) | 2022-06-28 |
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| WO2021201244A1 (en) * | 2020-04-01 | 2021-10-07 | 株式会社フジコー | Long hardened material production method, sintered ore crushing tooth, and method for producing same |
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| Publication number | Publication date |
|---|---|
| CN114472856B (en) | 2022-06-28 |
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