CN102489685B - Wear-resistant white cast iron rice sieve batten - Google Patents
Wear-resistant white cast iron rice sieve batten Download PDFInfo
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- CN102489685B CN102489685B CN 201110399853 CN201110399853A CN102489685B CN 102489685 B CN102489685 B CN 102489685B CN 201110399853 CN201110399853 CN 201110399853 CN 201110399853 A CN201110399853 A CN 201110399853A CN 102489685 B CN102489685 B CN 102489685B
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- wear
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- press strip
- white cast
- screen sheet
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Abstract
The invention provides a method for wear-resistant white cast iron rice sieve batten. The batten is characterized in that a detachable box and spring sands of green clay sand mold unit sands are used for shaping; a sprue is arranged on an upper green sand mold; a runner, an ingate and rice sieve battens are arranged on a lower green sand mold; the lower end of a bolt A is inserted into a bolt A insertion hole; the lower end of a bolt B is inserted into a bolt B insertion hole; the upper green sand mold and the lower green sand mold are positioned and jointly molded by positioning pins outside the box; an electric furnace is used for smelting furnace burdens; and after entering the sprue, the runner and the ingate, the molten iron of the wear-resistant white cast iron rice sieve batten fills the cavities of the rice sieve battens and casts in the upper ends of the bolts A and B. The wear-resistant white cast iron rice sieve batten casting in the bolts has the following beneficial effects: the bolts are firmly bonded with the rice sieves; and the service lives of the rice sieve battens are prolonged and the milling quality is improved by applying the wear resistance of the wear-resistant whitecast iron.
Description
Technical field
The present invention relates to a kind of method of cast iron product, especially cast the method for 2 wear-resistant white cast rice huller screen sheet press strip.
Background technology
Rice huller screen sheet press strip is because of the bad part of changing often that weares and teares in rice mill.Produce at present the method for rice huller screen sheet press strip, what have uses machining production, on stripe shape iron plate jewel hole, insert bolt, the production process content is various and of poor qualityly cause husk rice to yield poorly; What have casts with grey cast-iron, often weares and teares bad, causes the one of the main reasons of cracking rice in rice milling process.
Summary of the invention
The invention provides a kind of method of casting 2 wear-resistant white cast rice huller screen sheet press strip, the castingin bolt engages firmly with rice huller screen sheet press strip, and white cast iron anti-wear is durable, has improved rice huller screen sheet press strip service life, has improved the husk rice quality.
The technical solution adopted for the present invention to solve the technical problems is: the method for casting 2 wear-resistant white cast rice huller screen sheet press strip is characterized in that using greensand mold, sprue, cross gate, rice huller screen sheet press strip, first screw jack, first bolt lower end, lower greensand mold, moulding board, first bolt upper end, second screw jack, second bolt lower end, second bolt upper end, case outside fix pin, detachable sandbox, ingate, clay-bonded sand greensand mold system sand; Rice huller screen sheet press strip, first screw jack, first bolt lower end, first bolt upper end, second screw jack, second bolt lower end, second bolt upper end, ingate, cross gate are located on lower greensand mold, first bolt lower end is inserted in the first screw jack, and second bolt lower end is inserted in the second screw jack; Sprue is located on greensand mold; With detachable sandbox and clay-bonded sand greensand mold system sand ramming moulding, upper greensand mold and lower greensand mold are with case outside fix finger setting mould assembly; The electro-smelting furnace charge; 2 wear-resistant white cast material molten iron enters sprue and enters cross gate and enter and be full of rice huller screen sheet press strip die cavity and castingin first, second bolt upper end after ingate.
Clay-bonded sand greensand mold system sand is that casting is 20-40 order clay-bonded sand greensand mold system sand with the silica sand granularity.
The chemical composition of casting 2 wear-resistant white cast rice huller screen sheet press strip: C:3.5-3.8%, Si :≤0.6%, Mn:0.15-0.20%, P :≤0.3%, S:0.2-0.4%.
The metallographic structure of casting 2 wear-resistant white cast rice huller screen sheet press strip is: cementite+pearlite.
The invention has the beneficial effects as follows, can enhance productivity to pick up than machining production with the production of casting 2 wear-resistant white cast rice huller screen sheet press strip and many times, and bolt engages firm, wear-resistant durablely with rice huller screen sheet press strip, and 2 wear-resistant white cast rice huller screen sheet press strip improves 4 times than grey cast-iron rice huller screen sheet press strip service life.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is the structure chart of the method for casting 2 wear-resistant white cast rice huller screen sheet press strip.
Fig. 1 is the B-B cutaway view of Fig. 2.
Fig. 2 is the A-A cutaway view of Fig. 1.
In figure 1, upper greensand mold, 2, sprue, 3, cross gate, 4, rice huller screen sheet press strip, 5, the first screw jack, 6, first bolt lower end, 7, lower greensand mold, 8, moulding board, 9, first bolt upper end, 10, second screw jack, 11, second bolt lower end, 12, second bolt upper end, 13, case outside fix pin, 14, detachable sandbox, 15, ingate, 16, clay-bonded sand greensand mold system sand.
The specific embodiment
Accompanying drawing is the structure chart of method of the casting 2 wear-resistant white cast rice huller screen sheet press strip of jet-air rice polisher NF-14 type.at Fig. 1, in 2, type 4 casting method ramming moulding with clay-bonded sand wet type system sand 16 and detachable sandbox 14, first put the rice huller screen sheet press strip 4 of 15 millimeters of length 200 mm wide 20 millimeters thick that are provided with first screw jack 5 and second screw jack 10 well on moulding board 8, ingate 15, the apperance of cross gate 3, put again the drag box of detachable sandbox 14 well on moulding board 8, make lower greensand mold 7 with 16 rammings of clay-bonded sand greensand mold system sand, make down greensand mold 7 afterwards and locate with 3 case outside fix pins 13 and put the cope of detachable sandbox 14 well and spread lower tap sand from moulding board 8 upsets, make greensand mold 1 with 16 rammings of clay-bonded sand greensand mold system sand after position of sound production sprue 2 apperances on cross gate 3 apperances, trip out sprue 2 apperances, open wide upper greensand mold 1, trip out the rice huller screen sheet press strip 4 on lower greensand mold 7, ingate 15, the apperance of cross gate 3, the first bolt lower end 6 of cup head M6 * 28 millimeter is inserted in the first screw jack 5 of 18 millimeters of Φ 4.8 millimeters deep, the second bolt lower end 11 of cup head M6 * 28 millimeter is inserted in the second screw jack 10 of 18 millimeters of Φ 4.8 millimeters deep, first screw jack 5 is 160 ± 1 millimeters with the pitch of holes of second screw jack 10, the bolt axis is to 20 millimeters of nearly broadside distances, lower greensand mold 7 is located mould assemblys with upper greensand mold 1 with 3 case outside fix pins 13, but after mould assembly, the greensand mold of having made type being placed on the cast place takes off detachable sandbox 14 block sequenceses and uses, 500kg electric induction furnace melting furnace charge, charge composition is: steel-making one group of one-level of the pig iron, three classes 80%, foundry returns 20%, pour into a mould when behind cast iron melting to 1500 ± 10 ℃, molten iron is down to 1400 ± 10 ℃, casting 2 wear-resistant white cast material molten iron enters sprue 2 and enters cross gate 3 and enter and be full of rice huller screen sheet press strip 4 die cavities and castingin first bolt upper end 9 and second bolt upper end 12 after ingate 15.
Clay-bonded sand greensand mold system sand is that casting is 20-40 order clay-bonded sand greensand mold system sand with the silica sand granularity.
The chemical composition of casting 2 wear-resistant white cast rice huller screen sheet press strip: C:3.5-3.8%, Si :≤0.6%, Mn:0.15-0.2%, P :≤0.3%, S:0.2-0.4%.
The metallographic structure of casting 2 wear-resistant white cast rice huller screen sheet press strip is: cementite+pearlite.
Claims (4)
1. method of casting 2 wear-resistant white cast rice huller screen sheet press strip is characterized in that using greensand mold, sprue, cross gate, rice huller screen sheet press strip, first screw jack, first bolt lower end, lower greensand mold, moulding board, first bolt upper end, second screw jack, second bolt lower end, second bolt upper end, upper greensand mold, case outside fix pin, detachable sandbox, ingate, clay-bonded sand greensand mold system sand; Rice huller screen sheet press strip, first screw jack, first bolt lower end, first bolt upper end, second screw jack, second bolt lower end, second bolt upper end, ingate, cross gate are located on lower greensand mold, first bolt lower end is inserted in the first screw jack, and second bolt lower end is inserted in the second screw jack; Sprue is located on greensand mold; With detachable sandbox and clay-bonded sand greensand mold system sand ramming moulding, upper greensand mold and lower greensand mold are with case outside fix finger setting mould assembly; The electro-smelting furnace charge; 2 wear-resistant white cast material molten iron enters sprue and enters cross gate and enter and be full of rice huller screen sheet press strip die cavity and castingin first, second bolt upper end after ingate.
2. the method for casting 2 wear-resistant white cast rice huller screen sheet press strip according to claim 1 is characterized in that: clay-bonded sand greensand mold system sand is that casting is 20-40 order clay-bonded sand greensand mold system sand with the silica sand granularity.
3. cast according to claim 1 the method for 2 wear-resistant white cast rice huller screen sheet press strip, it is characterized in that: the chemical composition of casting 2 wear-resistant white cast rice huller screen sheet press strip: C:3.5-3.8%, Si :≤0.6%, Mn:0.15-0.20%, P :≤0.3%, S:0.2-0.4%.
4. the method for casting 2 wear-resistant white cast rice huller screen sheet press strip according to claim 1 is characterized in that: the metallographic structure of casting 2 wear-resistant white cast rice huller screen sheet press strip is: cementite+pearlite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110399853 CN102489685B (en) | 2011-11-26 | 2011-11-26 | Wear-resistant white cast iron rice sieve batten |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110399853 CN102489685B (en) | 2011-11-26 | 2011-11-26 | Wear-resistant white cast iron rice sieve batten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102489685A CN102489685A (en) | 2012-06-13 |
| CN102489685B true CN102489685B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110399853 Expired - Fee Related CN102489685B (en) | 2011-11-26 | 2011-11-26 | Wear-resistant white cast iron rice sieve batten |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276743A (en) * | 2013-07-05 | 2015-01-14 | 陈硕 | Method for casting vermicular graphite cast iron glass bottle split mold |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2269897Y (en) * | 1996-08-16 | 1997-12-10 | 郭金龙 | Depression bar for rice polisher |
| CN2390689Y (en) * | 1999-11-30 | 2000-08-09 | 姚代书 | Rice milling house assembly with rectangular cross-section depression bar |
| JP2010274164A (en) * | 2009-05-26 | 2010-12-09 | Zojirushi Corp | Rice polishing machine |
| CN202415660U (en) * | 2011-11-26 | 2012-09-05 | 刘之增 | Wear-resistant white cast iron rice sieve sheet pressure strip with inserted-cast bolts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3172856B2 (en) * | 1994-06-09 | 2001-06-04 | 株式会社細川製作所 | Single pass rice mill resistance device |
-
2011
- 2011-11-26 CN CN 201110399853 patent/CN102489685B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2269897Y (en) * | 1996-08-16 | 1997-12-10 | 郭金龙 | Depression bar for rice polisher |
| CN2390689Y (en) * | 1999-11-30 | 2000-08-09 | 姚代书 | Rice milling house assembly with rectangular cross-section depression bar |
| JP2010274164A (en) * | 2009-05-26 | 2010-12-09 | Zojirushi Corp | Rice polishing machine |
| CN202415660U (en) * | 2011-11-26 | 2012-09-05 | 刘之增 | Wear-resistant white cast iron rice sieve sheet pressure strip with inserted-cast bolts |
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| Publication number | Publication date |
|---|---|
| CN102489685A (en) | 2012-06-13 |
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Owner name: NANTONG HONGDE ELECTROMECHANICAL CO., LTD. Free format text: FORMER OWNER: LIU ZHIZENG Effective date: 20131111 |
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Free format text: CORRECT: ADDRESS; FROM: 272500 JINING, SHANDONG PROVINCE TO: 226300 NANTONG, JIANGSU PROVINCE |
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Effective date of registration: 20131111 Address after: Tongzhou District four An Zhen Qi Jia Qiao 226300 Jiangsu city of Nantong Province in four groups Patentee after: Nantong Hongde Mechanical Co., Ltd. Address before: 272500 Shandong province Wenshang County in North Street No. 1518 Patentee before: Liu Zhizeng |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131126 |