CN112108613A - Design method of roller static pouring device - Google Patents
Design method of roller static pouring device Download PDFInfo
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- CN112108613A CN112108613A CN201910537789.7A CN201910537789A CN112108613A CN 112108613 A CN112108613 A CN 112108613A CN 201910537789 A CN201910537789 A CN 201910537789A CN 112108613 A CN112108613 A CN 112108613A
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- diameter
- roller
- body cavity
- sprue
- roller body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a design method of a roller static pouring device, which comprises the following steps: s1: determining the diameter D1 and the height H1 of the roller body cavity; s2: determining the diameter D2 of the sprue according to the diameter D1 of the roller body cavity; s3: determining the height H2 of the sprue according to the diameter D1 of the roller body cavity; s4: determining the outlet diameter D3 of the inner pouring channel according to the diameter D2 of the straight pouring channel; s5: the joint of the straight pouring channel and the inner pouring channel is designed to be in arc transition connection. According to the invention, the sprue and the ingate are calculated through the roller body cavity to obtain specific parameters, the sprue joint is in arc transition connection, the outlet of the ingate is communicated with the bottom of the roller body cavity, and the outlet of the ingate is in tangential connection with the bottom of the roller cavity, so that molten metal can rotate rapidly and stably fill the mold during roller casting, the discharge of impurities, gas and the like is facilitated, and the product quality is improved.
Description
Technical Field
The invention relates to the field of roller manufacturing, in particular to a design method of a roller static pouring device.
Background
The rolls are important parts of rolling mills in steel rolling mills, are tools for plastically deforming metals, and are important consumable parts for determining the efficiency of the rolling mills and the quality of rolled products. At present, the roller at home and abroad usually adopts two casting pouring methods of static state or centrifugal compound, and the quality of the product is directly influenced by the design of a pouring device when the roller is used as a casting in static pouring.
The roller manufactured by the design method of the prior roller static pouring device has the following problems:
1. the flow velocity of the liquid in the casting system is not stable, thereby causing the quality defect of the roller.
2. When the high-speed rotary mold filling is adopted during manufacturing, the surface coating of the mold cavity is seriously scoured, and inclusion air holes are easily formed, so that the surface quality and the internal quality of the roller have larger defects.
Disclosure of Invention
The invention aims to provide a design method of a static casting device of a roller, aiming at the problem that the quality defect of the manufactured roller can be caused by adopting the design method of the casting device in the prior art.
The technical scheme for realizing the purpose of the invention is as follows: a design method of a roller static pouring device comprises the following steps:
s1: determining the diameter D1 and the height H1 of the roller body cavity;
s2: determining the diameter D2 of the sprue according to the diameter D1 of the roller body cavity;
s3: determining the height H2 of the sprue according to the diameter D1 of the roller body cavity;
s4: determining the outlet diameter D3 of the inner pouring channel according to the diameter D2 of the straight pouring channel;
s5: designing the connection between the sprue and the ingate to be in arc transition connection;
s6: the outlet of the inner pouring channel is tangentially connected with the bottom of the roller cavity.
The calculation formula of step S2 is: d2 is equal to 8% -10% of D1.
The diameter D2 of the sprue is calculated according to a formula, and the result is trimmed to be an integer.
The calculation formula of step S3 is: h2 is equal to 110% -115% of H1.
The height H2 of the sprue is calculated according to a formula, and the result is trimmed to be an integer.
The calculation formula of step S4 is: d3 is equal to 80% -90% of D2.
The outlet diameter D3 of the ingate is calculated according to a formula, and the result is trimmed to be an integer.
Both ends of the roller body cavity are designed to be frustum-shaped with small end parts and large middle parts.
By adopting the technical scheme, the invention has the following beneficial effects: (1) according to the invention, the sprue and the ingate are calculated through the roller body cavity to obtain specific parameters, the sprue joint is in arc transition connection, the outlet of the ingate is communicated with the bottom of the roller body cavity, and the outlet of the ingate is in tangential connection with the bottom of the roller cavity, so that molten metal can rotate rapidly and stably fill the mold during roller casting, the discharge of impurities, gas and the like is facilitated, and the product quality is improved.
(2) The two ends of the roller body cavity are both arranged in a frustum shape with small end parts and large middle parts, so that the roller is convenient to cast.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the roller static pouring device.
The reference numbers in the drawings are:
a roller body cavity 1, a sprue 2 and an ingate 3.
Detailed Description
Example 1
Referring to fig. 1, the design method of the static casting device for the roller of the embodiment includes the following steps:
s1: the diameter D1 and the height H1 of the roller body cavity 1 are determined, and both ends of the roller body cavity 1 are designed to be frustum-shaped with small end parts and large middle parts.
S2: the diameter D2 of the sprue 2 is determined according to the diameter D1 of the roller body cavity 1, and the calculation formula is as follows: d2 is equal to 8-10% of D1, and D2 is rounded to an integer after the result is calculated according to a formula.
S3: the height H2 of the sprue 2 is determined according to the diameter D1 of the roller body cavity 1, and the calculation formula is as follows: h2 is equal to 110-115% of H1, and H2 is rounded to an integer after the result is calculated according to a formula.
S4: the diameter D3 of the outlet of the ingate 3 is determined according to the diameter D2 of the sprue 2 and is calculated according to the following formula: d3 is equal to 80-90% of D2, and the outlet diameter D3 of the ingate 3 is calculated according to a formula and is trimmed to be an integer.
S5: the joint of the sprue 2 and the ingate 3 is designed to be in arc transition connection;
s6: the outlet of the inner pouring channel 3 is tangentially connected with the bottom of the roller cavity 1.
Taking the roller body cavity 1 with the diameter D1 of 500mm and the height H1 of 3500mm as an example:
calculating according to a formula D2-8-10% D1 and a formula H2-110-115% H1 to obtain that the diameter D2 of the sprue 2 is 44-55 mm, and the diameter D2 is trimmed to be an integer of 50 mm; the height H2 is 3850-4025 mm, and is rounded to an integer of 4000 mm; calculating the diameter D3 of the outlet of the ingate 3 to be 40-45 mm according to a formula D3-80-90% D2, and trimming the diameter to be an integer of 40 mm; the process parameters obtained by the design calculation are adopted to construct a roller static pouring system for pouring, the liquid level is found to rise stably and rotate well during pouring, the surface quality of the roller after opening the box is good, no defects such as inclusion pores and the like exist in the roller after detection such as flaw detection, and the like, so that a satisfactory effect is obtained.
Example 2
This embodiment is substantially the same as embodiment 1 except that: in the embodiment, a roller body cavity 1 with the diameter D1 of 800mm and the height H1 of 5000mm is taken as an example:
calculating according to a formula D2-8-10% D1 and a formula H2-110-115% H1 to obtain that the diameter D2 of the sprue 2 is 64-80 mm, and the diameter D2 is reduced to an integer of 70 mm; the height H2 is 5500-5750 mm, and is trimmed to an integer of 5700 mm; calculating the diameter D3 of the outlet of the ingate 3 to be 56-63 mm according to a formula D3-80-90% D2, and trimming to be an integer of 60 mm; the process parameters obtained by the design calculation are adopted to construct a roller static pouring system for pouring, the liquid level is found to rise stably and rotate well during pouring, the surface quality of the roller after opening the box is good, no defects such as inclusion pores and the like exist in the roller after detection such as flaw detection, and the like, so that a satisfactory effect is obtained.
Example 3
This embodiment is substantially the same as embodiment 1 except that: in the embodiment, a roller body cavity 1 with a diameter D1 of 950mm and a height H1 of 6500mm is taken as an example:
calculating according to a formula D2-8-10% D1 and a formula H2-110-115% H1 to obtain that the diameter D2 of the sprue 2 is 76-95 mm, and the diameter D2 is trimmed to be an integer of 80 mm; the height H2 is 7150-7475 mm, and is trimmed to an integer of 7200 mm; calculating the diameter D3 of the outlet of the ingate 3 to be 64-72 mm according to a formula D3-80-90% D2, and trimming the diameter to be an integer of 70 mm; the process parameters obtained by the design calculation are adopted to construct a roller static pouring system for pouring, the liquid level is found to rise stably and rotate well during pouring, the surface quality of the roller after opening the box is good, no defects such as inclusion pores and the like exist in the roller after detection such as flaw detection, and the like, so that a satisfactory effect is obtained.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A design method of a roller static pouring device is characterized by comprising the following steps:
s1: determining the diameter D1 and the height H1 of the roller body cavity (1);
s2: determining the diameter D2 of the sprue (2) according to the diameter D1 of the roller body cavity (1);
s3: determining the height H2 of the sprue (2) according to the diameter D1 of the roller body cavity (1);
s4: determining the outlet diameter D3 of the inner pouring channel (3) according to the diameter D2 of the straight pouring channel (2);
s5: the joint of the straight pouring channel (2) and the inner pouring channel (3) is designed to be in arc transition connection;
s6: the outlet of the inner pouring channel (3) is tangentially connected with the bottom of the roller cavity (1).
2. The method for designing a roller static casting device according to claim 1, wherein the calculation formula of the step S2 is as follows: d2 is equal to 8% -10% of D1.
3. A method for designing a roll static casting apparatus according to claim 2, wherein: the diameter D2 of the sprue (2) is calculated according to a formula, and the result is trimmed to be an integer.
4. The method for designing a roller static casting device according to claim 1, wherein the calculation formula of the step S3 is as follows: h2 is equal to 110% -115% of H1.
5. The design method of a roller static pouring device according to claim 4, characterized in that: the height H2 of the sprue (2) is calculated according to a formula, and the result is trimmed to be an integer.
6. The method for designing a roller static casting device according to claim 1, wherein the calculation formula of the step S4 is as follows: d3 is equal to 80% -90% of D2.
7. The design method of a roller static pouring device according to claim 6, characterized in that: and the outlet diameter D3 of the inner pouring channel (3) is subjected to trimming to be an integer according to a formula.
8. The design method of a roller static pouring device according to claim 1, characterized in that: the two ends of the roller body cavity (1) are designed to be frustum-shaped with small end parts and large middle parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910537789.7A CN112108613A (en) | 2019-06-20 | 2019-06-20 | Design method of roller static pouring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910537789.7A CN112108613A (en) | 2019-06-20 | 2019-06-20 | Design method of roller static pouring device |
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| Publication Number | Publication Date |
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| CN112108613A true CN112108613A (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910537789.7A Withdrawn CN112108613A (en) | 2019-06-20 | 2019-06-20 | Design method of roller static pouring device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597180A (en) * | 2004-08-02 | 2005-03-23 | 中国科学院金属研究所 | Integral easting method of cast steel supporting roller |
| CN102319891A (en) * | 2011-09-13 | 2012-01-18 | 中国科学院金属研究所 | Gating system capable of effectively controlling air entrainment and slag entrainment and design method thereof |
| CN102554129A (en) * | 2011-12-26 | 2012-07-11 | 常州凯达重工科技有限公司 | Roll casting process and pouring device adopted by same |
| CN106636879A (en) * | 2017-02-14 | 2017-05-10 | 广东中天创展球铁有限公司 | Nodular cast iron roll barrel and preparation method thereof |
| WO2017088332A1 (en) * | 2015-11-26 | 2017-06-01 | 江苏科技大学 | Casting apparatus and casting method for anchor fluke |
| CN107377892A (en) * | 2017-06-22 | 2017-11-24 | 成都三强轧辊股份有限公司 | A kind of cast steel roll casting device and casting technique |
-
2019
- 2019-06-20 CN CN201910537789.7A patent/CN112108613A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597180A (en) * | 2004-08-02 | 2005-03-23 | 中国科学院金属研究所 | Integral easting method of cast steel supporting roller |
| CN102319891A (en) * | 2011-09-13 | 2012-01-18 | 中国科学院金属研究所 | Gating system capable of effectively controlling air entrainment and slag entrainment and design method thereof |
| CN102554129A (en) * | 2011-12-26 | 2012-07-11 | 常州凯达重工科技有限公司 | Roll casting process and pouring device adopted by same |
| WO2017088332A1 (en) * | 2015-11-26 | 2017-06-01 | 江苏科技大学 | Casting apparatus and casting method for anchor fluke |
| CN106636879A (en) * | 2017-02-14 | 2017-05-10 | 广东中天创展球铁有限公司 | Nodular cast iron roll barrel and preparation method thereof |
| CN107377892A (en) * | 2017-06-22 | 2017-11-24 | 成都三强轧辊股份有限公司 | A kind of cast steel roll casting device and casting technique |
Non-Patent Citations (1)
| Title |
|---|
| 高淑英等: ""镍铬钼无限冷硬球铁轧辊的生产"", 《铸造》, vol. 1, no. 03, pages 113 - 39 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: No.66, Dong'an Xingwang Road, Huangli Town, Wujin District, Changzhou City, Jiangsu Province 213100 Applicant after: Jiangsu Kaida Heavy Industry Co.,Ltd. Address before: No.66, Dong'an Xingwang Road, Huangli Town, Wujin District, Changzhou City, Jiangsu Province 213000 Applicant before: CHANGZHOU KAIDA HEAVY INDUSTRY TECHNOLOGY CO.,LTD. |
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| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201222 |
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| WW01 | Invention patent application withdrawn after publication |