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CN103736937A - Anti-crack rib for thin-walled box steel castings - Google Patents

Anti-crack rib for thin-walled box steel castings Download PDF

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Publication number
CN103736937A
CN103736937A CN201310734938.1A CN201310734938A CN103736937A CN 103736937 A CN103736937 A CN 103736937A CN 201310734938 A CN201310734938 A CN 201310734938A CN 103736937 A CN103736937 A CN 103736937A
Authority
CN
China
Prior art keywords
thin
crack
rib
casting
corner
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.)
Pending
Application number
CN201310734938.1A
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Chinese (zh)
Inventor
陆寿罩
汤建湘
曾立严
钟玉祥
黄启贤
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.)
LIUZHOU JIANGHANG INDUSTRY AND TRADE Co Ltd
Original Assignee
LIUZHOU JIANGHANG INDUSTRY AND TRADE 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 LIUZHOU JIANGHANG INDUSTRY AND TRADE Co Ltd filed Critical LIUZHOU JIANGHANG INDUSTRY AND TRADE Co Ltd
Priority to CN201310734938.1A priority Critical patent/CN103736937A/en
Publication of CN103736937A publication Critical patent/CN103736937A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an anti-crack rib for thin-walled box steel castings. Aiming at a problem that steel castings are scrapped due to the occurrence of hot cracks because the stress acts on an inner cavity in the process of casting, the invention adopts the technical scheme as follows: an anti-crack rib is entirely cast at the joint of the two faces of a steel casting matrix, the radian of the anti-crack rib at the corner of the two side faces is R3-R5mm, the radian of the anti-crack rib at the corner of the side face and the bottom surface is R5-R8mm, the height of the anti-crack rib is 15-20 mm, and the thickness of the anti-crack rib is 0.3 time as large as that of the matrix. The anti-crack rib disclosed by the invention eliminates the cracking phenomena, and has the beneficial effects of simple structure, easy process, low cost, and the like.

Description

The cracking strip of thin-walled box steel-casting
Technical field
The present invention relates to casting field, especially thin-walled box steel-casting.
Background technology
In thin-walled box Steel Castings, often because foundry goods cannot shift at solidification shrinkage stage stress, all act on foundry goods body, at inner chamber, there will be a large amount of fire checks, as fruit structure too seal or technique clearance hole little, just cannot adopt remedial measures to inner chamber crackle, thereby cause foundry goods cannot reprocess and scrap because of crackle.General designer does not also consider the feasibility of casting technique in two wall junctions of foundry goods, conventionally do not design the cracking strip of junction, although anticracking can have multiple style, the cracking strip of thin-walled box steel-casting is also had no way of using for reference.
Summary of the invention
Object of the present invention prevents that for providing a kind of thin-walled box steel-casting inner chamber from producing the cracking strip of fire check.
The technical solution used in the present invention is as follows:
In junction, thin-walled box steel-casting matrix two sides, be that corner integral body casts out cracking strip, the cracking strip radian of corner, two sides is R3-R5mm, the cracking strip radian of side and corner, bottom surface is R5-R8mm, the height of cracking strip is 15-20mm, and cracking strip thickness is 0.3-0.4 times of steel-casting matrix thickness.Distance between adjacent two muscle is 30-40mm.
Technique scheme has solved thin-walled box core cavity and has produced ardent defect.This technical scheme is suitable for all kinds of difformities and structural casting.
The present invention has simple in structure, and technique is easily gone, and cost is low, is applicable to the beneficial effect of common various structures easy to crack.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is thin-walled box steel-casting cracking strip structure cross-sectional schematic of the present invention.
In figure, parts name label is: 1-box steel-casting matrix, 2-cracking strip, the cracking strip radian of 3-side and corner, bottom surface, corner, 4-two sides cracking strip radian, 5-cracking strip thickness, the adjacent two cracking strip distances of 6-, 7-cracking strip height, 8-matrix thickness.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment 1
A thin-walled box steel-casting, because foundry goods is when the solidification shrinkage, foundry goods hindered contraction, because stress is excessive, and there are a large amount of fire checks at inner chamber, and box foundry goods only to have a diameter be the technique clearance hole of about 180mm, cannot place under repair to inner chamber, in junction, inner chamber matrix two sides integral body, cast out cracking strip for this reason, at corner, two sides radian, be 3mm, the radian of side and corner, bottom surface is 5mm, and cracking strip height is 15mm, width is 0.3 times of matrix thickness, and adjacent two muscle distances are 30mm.
Embodiment 2
Overall structure is identical with upside, at corner, two sides radian, is 5mm, and the radian of side and corner, bottom surface is 8mm, and cracking strip height is 20mm, cracking strip thickness is matrix thickness 0.4 times, adjacent two muscle distances are 40mm.
Through evidence, above both sides have all reached the generation that prevents fire check.

Claims (2)

1. the cracking strip of thin-walled box steel-casting, it is characterized in that: in junction, thin-walled box steel-casting matrix two sides, be that corner integral body casts out cracking strip, the cracking strip radian of corner, two sides is R3-R5mm, the cracking strip radian of side and corner, bottom surface is R5-R8mm, the height of cracking strip is 15-20mm, and cracking strip thickness is 0.3-0.4 times of steel-casting matrix thickness.
2. the cracking strip of thin-walled box steel-casting according to claim 1, is characterized in that: the distance between described adjacent two muscle is 30-40mm.
CN201310734938.1A 2013-12-27 2013-12-27 Anti-crack rib for thin-walled box steel castings Pending CN103736937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310734938.1A CN103736937A (en) 2013-12-27 2013-12-27 Anti-crack rib for thin-walled box steel castings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310734938.1A CN103736937A (en) 2013-12-27 2013-12-27 Anti-crack rib for thin-walled box steel castings

Publications (1)

Publication Number Publication Date
CN103736937A true CN103736937A (en) 2014-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310734938.1A Pending CN103736937A (en) 2013-12-27 2013-12-27 Anti-crack rib for thin-walled box steel castings

Country Status (1)

Country Link
CN (1) CN103736937A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105215270A (en) * 2015-10-21 2016-01-06 南车长江车辆有限公司 Thin-walled frame-type steel-casting cracking strip structure
CN108380839A (en) * 2018-01-20 2018-08-10 共享铸钢有限公司 A kind of casting method of steel-casting thin and thick wall transitional region anticracking
CN111941961A (en) * 2020-09-04 2020-11-17 三明市蓝天机械制造有限公司 Economical high-compressive-strength steel casting and processing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508621A1 (en) * 1966-02-15 1969-10-30 George Blair & Company Ltd Method for producing a metal casting with a re-entrant angle or a re-entrant corner or the like.
CN201906787U (en) * 2011-01-17 2011-07-27 山西华翔投资有限公司 Crack-preventing structure of cast product
CN102441646A (en) * 2011-12-08 2012-05-09 济南重工股份有限公司 Apparatus and method for casting large-scale semi-gear
CN202316924U (en) * 2011-12-09 2012-07-11 济南重工股份有限公司 Crack prevention device for end cover

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508621A1 (en) * 1966-02-15 1969-10-30 George Blair & Company Ltd Method for producing a metal casting with a re-entrant angle or a re-entrant corner or the like.
CN201906787U (en) * 2011-01-17 2011-07-27 山西华翔投资有限公司 Crack-preventing structure of cast product
CN102441646A (en) * 2011-12-08 2012-05-09 济南重工股份有限公司 Apparatus and method for casting large-scale semi-gear
CN202316924U (en) * 2011-12-09 2012-07-11 济南重工股份有限公司 Crack prevention device for end cover

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
管遵辉: "《转K2摇枕铸件裂纹产生原因分析及防止》", 《铸造》, no. 11, 30 November 2006 (2006-11-30) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105215270A (en) * 2015-10-21 2016-01-06 南车长江车辆有限公司 Thin-walled frame-type steel-casting cracking strip structure
CN105215270B (en) * 2015-10-21 2017-08-08 中车长江车辆有限公司 Thin-walled frame-type steel-casting cracking strip structure
CN108380839A (en) * 2018-01-20 2018-08-10 共享铸钢有限公司 A kind of casting method of steel-casting thin and thick wall transitional region anticracking
CN111941961A (en) * 2020-09-04 2020-11-17 三明市蓝天机械制造有限公司 Economical high-compressive-strength steel casting and processing method thereof

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Application publication date: 20140423