CN113621842A - Production process of cushion block material of heating section of steel rolling heating furnace - Google Patents
Production process of cushion block material of heating section of steel rolling heating furnace Download PDFInfo
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- CN113621842A CN113621842A CN202110896073.3A CN202110896073A CN113621842A CN 113621842 A CN113621842 A CN 113621842A CN 202110896073 A CN202110896073 A CN 202110896073A CN 113621842 A CN113621842 A CN 113621842A
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- silicon
- furnace
- molybdenum
- manganese
- tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A production process of a cushion block material of a heating section of a steel rolling heating furnace relates to the technical field of steel production, and is characterized in that silicon, manganese, molybdenum, tungsten, iron and chromium are used as raw materials, sequentially added into a medium-frequency induction furnace, melted at high temperature and cast, wherein the silicon Si is 0.6/1.00, the manganese Mn is 0.4/0.50, the molybdenum Mo is 2.5/4.5, the tungsten W is 5.0/7.0, the iron Fe7.0/11.0 and the balance of chromium Cr is used as a matrix. The material HHSW of the high-temperature new material cushion block has a melting point of 1650 ℃, the material basically has no plastic deformation before the melting point, the oxidation resistance is improved, the limit use temperature can reach 1500 ℃, and the maximum pressure-bearing capacity is 4.5 times that of the traditional cobalt alloy.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of steel production, in particular to a production process of a cushion block material.
[ background of the invention ]
At present, the material of the cushion block at the high-temperature heating section of the pusher furnace and the walking beam furnace is mainly Co50, the melting point is 1380-1420 ℃, and the maximum use strength at 1200 ℃ is 0.1kg/mm2The main reason for the damage of the cushion block of the heating furnace is not caused by abrasion, ablation oxidation, the main reason for the damage of the cushion block is damaged by the pressure of the steel billet, not all cushion blocks in the heating furnace bear the pressure, and all cushion blocks are considered to bear the pressure during the design, because the cushion blocks bear the pressureThe pressure has exceeded its maximum use intensity, and the pit appears in the cushion surface production plastic deformation, and the cinder that the steel billet drops is at the pit gathering and grow up rapidly, and these convex cinder can be at the ejecting pit of steel billet lower surface, and the steel billet gets into the steel rolling process water under high pressure and hardly clears away the cinder in the pit, can lead to hot rolling material to appear the quality problem, can influence the quality of later stage cold rolling material moreover.
In order to solve the problem, a large amount of W (more than or equal to 10 percent by weight) is added into the cobalt alloy, the melting point of the alloy is improved by about 40-50 ℃, the performance is greatly improved, and the using effect is good.
[ summary of the invention ]
The invention aims to provide a production process of a cushion block material of a heating section of a steel rolling heating furnace, which has high hardness and strong wear resistance.
The technical scheme for solving the technical problem is that silicon, manganese, molybdenum, tungsten, iron and chromium are used as raw materials, and the operation is completed through the following steps:
1. in medium frequency induction furnace
Sequentially adding pure iron, tungsten and molybdenum and 25-35% of metal chromium by total weight (with argon protection), continuously adding the rest metal chromium after the materials begin to be melted, heating to 1800 ℃, adding ferromanganese and ferrosilicon, and melting;
2. before tapping, sampling in front of the furnace to detect chemical components, and finely adjusting according to a detection result until the components are qualified;
3. baking the casting ladle to 600-630 ℃;
4. adding a silicon-calcium alloy deoxidizer accounting for 2% of the total weight to perform in-furnace deoxidation, heating to 1900 ℃ for tapping, standing molten steel before pouring, removing slag on the liquid surface, adding a massive (6-10 mm in granularity) yttrium (Y) alterant accounting for 1-2% of the total weight at the bottom of a pouring ladle, performing in-ladle modification treatment, simultaneously placing a precision casting mould shell on a high-frequency vibration platform, and performing vibration pouring with the vibration frequency f being more than or equal to 20 kHf; the casting temperature is 1780-1800 ℃; wherein carbon C is less than or equal to 0.08, phosphorus P is less than or equal to 0.020, sulfur S is less than or equal to 0.020, silicon Si is 0.6/1.00, manganese Mn is 0.4/0.50, molybdenum Mo is 2.5/4.5, tungsten W is 5.0/7.0, iron Fe7.0/11.0, and the balance is chromium Cr which is taken as a matrix in the step 2, the parts by weight are calculated according to 100 parts by weight, and in the raw materials, manganese and silicon exist in a ferromanganese and ferrosilicon state.
The silicon-calcium alloy deoxidizer is used for deoxidizing in the furnace, and the silicon-calcium alloy deoxidizer is pressed into the bottom of the smelting furnace by adopting a bell jar method, so that the alloy in the furnace is fully deoxidized.
Specific physical property parameters are as follows.
The material HHSW of the high-temperature new material cushion block has a melting point of 1650 ℃, the material basically has no plastic deformation before the melting point, the oxidation resistance is improved, the limit use temperature can reach 1500 ℃, and the maximum pressure-bearing capacity is 4.5 times that of the traditional cobalt alloy.
[ detailed description ] embodiments
Example 1 the invention uses silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials and completes the operation by the following steps:
1. sequentially adding pure iron, tungsten, molybdenum and 30% of metal chromium by weight in a medium-frequency induction furnace (with argon protection), continuously adding the rest metal chromium after the materials begin to be melted, heating to 1800 ℃, adding ferromanganese and ferrosilicon, and melting;
2. before tapping, sampling in front of the furnace to detect chemical components, and finely adjusting according to a detection result until the components are qualified;
3. baking the casting ladle to 610 ℃;
4. adding a silicon-calcium alloy deoxidizer accounting for 2% of the total weight to perform in-furnace deoxidation, heating to 1900 ℃ for tapping, standing molten steel before pouring, removing slag on the liquid surface, adding 2% of massive (6-10 mm in granularity) heavy yttrium (Y) alterant at the bottom of a pouring ladle, performing in-ladle modification treatment, meanwhile, placing a precision casting mould shell on a high-frequency vibration platform, and performing vibration pouring (vibration frequency); the casting temperature is 1780-1800 ℃; wherein carbon C is less than or equal to 0.08, phosphorus P is less than or equal to 0.020, sulfur S is less than or equal to 0.020, silicon Si0.8, manganese Mn0.4, molybdenum Mo3.5, tungsten W6, iron Fe9.0 and the balance chromium Cr, and manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
Example 2 the invention uses silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials and completes the operation by the following steps:
1. sequentially adding pure iron, tungsten, molybdenum and 25% of metal chromium by weight in a medium-frequency induction furnace (with argon protection), continuously adding the rest metal chromium after the materials begin to be melted, heating to 1800 ℃, adding ferromanganese and ferrosilicon, and melting;
2. before tapping, sampling in front of the furnace to detect chemical components, and finely adjusting according to a detection result until the components are qualified;
3. baking the casting ladle to 630 ℃;
4. adding a silicon-calcium alloy deoxidizer accounting for 2% of the total weight to perform in-furnace deoxidation, heating to 1900 ℃ for tapping, standing molten steel before pouring, removing slag on the liquid surface, adding 1% of massive (6-10 mm in granularity) heavy yttrium (Y) alterant at the bottom of a pouring ladle, performing in-ladle modification treatment, meanwhile, placing a precision casting mould shell on a high-frequency vibration platform, and performing vibration pouring (vibration frequency); the casting temperature is 1780 ℃; in the step 2, carbon C is less than or equal to 0.08, phosphorus P is less than or equal to 0.020, sulfur S is less than or equal to 0.020, silicon Si1.00, manganese Mn0.4, molybdenum Mo4.5, tungsten W5.0, iron Fe11.0 and the balance chromium Cr, wherein in the raw materials, manganese and silicon exist in the states of ferromanganese and ferrosilicon.
Example 3 the invention uses silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials and completes the operation by the following steps:
1. sequentially adding pure iron, tungsten, molybdenum and metal chromium with the total weight of 35% in a medium-frequency induction furnace (with argon protection), continuously adding the rest metal chromium after the materials begin to be melted, heating to 1800 ℃, adding ferromanganese and ferrosilicon, and melting;
2. before tapping, sampling in front of the furnace to detect chemical components, and finely adjusting according to a detection result until the components are qualified;
3. baking the casting ladle to 600 ℃;
4. adding a silicon-calcium alloy deoxidizer accounting for 2% of the total weight to perform in-furnace deoxidation, heating to 1900 ℃ for tapping, standing molten steel before pouring, removing slag on the liquid surface, adding 2% of massive (6-10 mm in granularity) heavy yttrium (Y) alterant at the bottom of a pouring ladle, performing in-ladle modification treatment, meanwhile, placing a precision casting mould shell on a high-frequency vibration platform, and performing vibration pouring (vibration frequency);
the casting temperature is 1780-1800 ℃; in the step 2, carbon C is less than or equal to 0.08, phosphorus P is less than or equal to 0.020, sulfur S is less than or equal to 0.020, silicon Si0.6, manganese Mn0.50, molybdenum Mo2.5, tungsten W7.0, iron Fe7.0 and the balance chromium Cr, wherein in the raw materials, manganese and silicon exist in the states of ferromanganese and ferrosilicon.
Claims (3)
1. A production process of a cushion block material of a heating section of a steel rolling heating furnace is characterized by comprising the following steps: the method adopts silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, and comprises the following steps:
(1) sequentially adding pure iron, tungsten and molybdenum and 25-35% of metal chromium by total weight in a medium-frequency induction electric furnace with argon protection, continuously adding the rest metal chromium after the materials start to be melted, heating to 1800 ℃, adding ferromanganese and ferrosilicon, and melting;
(2) before tapping, sampling in front of the furnace to detect chemical components, and finely adjusting according to a detection result until the components are qualified;
(3) baking the casting ladle to 600-630 ℃;
(4) adding a silicon-calcium alloy deoxidizer accounting for 2% of the total weight to perform in-furnace deoxidation, heating to 1900 ℃ for tapping, standing molten steel before pouring, removing slag on the liquid surface, adding a massive yttrium alterant accounting for 1-2% of the total weight at the bottom of a pouring ladle, wherein the particle size of the massive yttrium alterant is 6-10mm, performing in-ladle modification treatment, and meanwhile, placing a precision casting mould shell on a high-frequency vibration platform for vibration pouring, wherein the vibration frequency f is more than or equal to 20 kHf; the casting temperature is 1780-1800 ℃; wherein carbon C is less than or equal to 0.08, phosphorus P is less than or equal to 0.020, sulfur S is less than or equal to 0.020, silicon Si is 0.6/1.00, manganese Mn is 0.4/0.50, molybdenum Mo is 2.5/4.5, tungsten W is 5.0/7.0, iron Fe7.0/11.0, and the balance is chromium Cr which is taken as a matrix in the step (2), the parts are weight parts, and the manganese and the silicon exist in a ferromanganese and ferrosilicon state in the raw materials according to 100 parts of the total parts.
2. The process for producing a mat block material according to claim 1, wherein: the silicon-calcium alloy deoxidizer is used for deoxidizing in the furnace, and is pressed into the bottom of the smelting furnace by a bell jar method.
3. The process for producing a mat block material according to claim 1, wherein: the method adopts silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, and comprises the following steps:
(1) sequentially adding pure iron, tungsten, molybdenum and metal chromium with the total weight of 30% in an argon-protected medium-frequency induction electric furnace, continuously adding the rest metal chromium after the materials start to be melted, heating to 1800 ℃, adding ferromanganese and ferrosilicon, and melting;
(2) before tapping, sampling in front of the furnace to detect chemical components, and finely adjusting according to a detection result until the components are qualified;
(3) baking the casting ladle to 610 ℃;
(4) adding a silicon-calcium alloy deoxidizer accounting for 2% of the total weight to perform in-furnace deoxidation, heating to 1900 ℃ for tapping, standing molten steel before pouring, removing slag on the liquid surface, adding a 2% o massive yttrium alterant with the granularity of 6-10mm at the bottom of a pouring ladle, performing in-ladle modification treatment, simultaneously placing a precision casting mould shell on a high-frequency vibration platform, and performing vibration pouring (vibration frequency); the casting temperature is 1780-1800 ℃; wherein carbon C is less than or equal to 0.08, phosphorus P is less than or equal to 0.020, sulfur S is less than or equal to 0.020, silicon Si0.8, manganese Mn0.4, molybdenum Mo3.5, tungsten W6, iron Fe9.0 and the balance chromium Cr, and manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110896073.3A CN113621842A (en) | 2021-08-05 | 2021-08-05 | Production process of cushion block material of heating section of steel rolling heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110896073.3A CN113621842A (en) | 2021-08-05 | 2021-08-05 | Production process of cushion block material of heating section of steel rolling heating furnace |
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| CN113621842A true CN113621842A (en) | 2021-11-09 |
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| CN202110896073.3A Withdrawn CN113621842A (en) | 2021-08-05 | 2021-08-05 | Production process of cushion block material of heating section of steel rolling heating furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03162545A (en) * | 1989-11-17 | 1991-07-12 | Kubota Corp | Heat-resistant alloy for supporting member for steel to be heated in heating furnace |
| JP2001073029A (en) * | 1999-09-07 | 2001-03-21 | Daido Steel Co Ltd | HIGH Cr HEAT RESISTANT ALLOY FOR HATING FURNACE SKID |
| CN1390969A (en) * | 2002-06-13 | 2003-01-15 | 马华政 | Refractory Cr-base alloy |
| KR20120047447A (en) * | 2010-11-04 | 2012-05-14 | (주)성진씨앤씨 | Skid material for heating furnace |
| CN109913727A (en) * | 2018-11-02 | 2019-06-21 | 北京首钢股份有限公司 | A kind of high temperature resistant ferrochrome of heater for rolling steel heat-resistant bearer and preparation method thereof |
-
2021
- 2021-08-05 CN CN202110896073.3A patent/CN113621842A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03162545A (en) * | 1989-11-17 | 1991-07-12 | Kubota Corp | Heat-resistant alloy for supporting member for steel to be heated in heating furnace |
| JP2001073029A (en) * | 1999-09-07 | 2001-03-21 | Daido Steel Co Ltd | HIGH Cr HEAT RESISTANT ALLOY FOR HATING FURNACE SKID |
| CN1390969A (en) * | 2002-06-13 | 2003-01-15 | 马华政 | Refractory Cr-base alloy |
| KR20120047447A (en) * | 2010-11-04 | 2012-05-14 | (주)성진씨앤씨 | Skid material for heating furnace |
| CN109913727A (en) * | 2018-11-02 | 2019-06-21 | 北京首钢股份有限公司 | A kind of high temperature resistant ferrochrome of heater for rolling steel heat-resistant bearer and preparation method thereof |
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Application publication date: 20211109 |