CN202639231U - Hinge beam casting - Google Patents
Hinge beam casting Download PDFInfo
- Publication number
- CN202639231U CN202639231U CN 201220276112 CN201220276112U CN202639231U CN 202639231 U CN202639231 U CN 202639231U CN 201220276112 CN201220276112 CN 201220276112 CN 201220276112 U CN201220276112 U CN 201220276112U CN 202639231 U CN202639231 U CN 202639231U
- Authority
- CN
- China
- Prior art keywords
- casting
- adopted
- hinge
- sand
- cylinder
- 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.)
- Expired - Fee Related
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- 238000005266 casting Methods 0.000 title abstract description 19
- 230000002093 peripheral Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 abstract description 38
- 229910000831 Steel Inorganic materials 0.000 abstract description 20
- 239000010959 steel Substances 0.000 abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 14
- 239000011514 iron Substances 0.000 abstract description 14
- 229910052742 iron Inorganic materials 0.000 abstract description 14
- 238000000034 methods Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound 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O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000377 silicon dioxide Substances 0.000 abstract description 8
- 229910001885 silicon dioxide Inorganic materials 0.000 abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound 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Abstract
The utility model discloses a hinge beam casting, belonging to the technical field of casting, sand molding, smelting and pouring. An annular cylinder type structure is adopted by the hinge beam casting, the hinge beam casting mainly comprises a cylinder body and ten convex lugs arranged on side faces of the cylinder body, smooth transition is adopted from connection parts of the upper end faces of the convex lugs and the cylinder body to the lower parts of the outer edges of the convex lugs, and the outer edges of the convex lugs are arc-shaped. A wood solid disc core assembly method is adopted in a casting production process, sodium silicate silica sand is adopted as outer side profile sand, and iron tube cores are adopted by lug holes of the convex lugs; chilling of external chilled iron is adopted in production of the outer sides of the lower parts of the convex lugs; a lower exhaust manner is adopted by the casting; and a water opening of a pouring system is provided with one straight runner with the diameter phi of 70mm and four low return inner runners with the diameter phi of 50mm, the diameter phi of a tank hole of a molten steel tank is 70mm, and an electric furnace and an LF (low frequency) refining method are adopted for smelting of molten steel. The hinge beam product produced according to the casting process scheme has the advantages of low cost and excellent quality, and can reach the advanced level in the same industry.
Description
Technical field
The utility model relates to casting, sand mold and smelts the placingJi Shu field, is specifically related to a kind of diamond press spare part hinge beam foundry goods.
Background technology
The hinge beam foundry goods is the vitals of producing the diamond product pressue device, material is ZG34Cr2Ni2Mo, structure is circular cylinder spare, Wall-Thickness Difference is very large, especially the foundry goods bottom is key positions of stressed maximum with four ears, in use bear significant load, the maximum working pressure that can reach is 6.0GPa.Therefore this living-article has not allowed the casting flaws such as casting crack, sand holes, pore.
The ear of existing hinge beam is shaped as the platform transition, as shown in Figure 1.Producing this casting process is: the die model technique that adopts die model firm offer+core assembly, all be to adopt the moulding of waterglass silica sand on the casting technique, the round core of ten ears adopts the resin chromite sand, and the low inner nozzle, 2 road of returning is adopted at the mouth of a river, it all is ∮ 50 generally that the cast ladle is filled with eye, and top box is pricked steam vent more.
There are the following problems for above-mentioned technology: there are collection sand or slag in platform position, ten ear upper surfaces; The sand holes defective is many after the roughing of endoporus lower surface, and again fine finishining after the necessary cleaning soldering is so affect ear's working strength; There is shrinkage porosite the not smooth part of Feeding channel during the ear solidification shrinkage, in use because tension stress is many from ear's fracture, the service life of having reduced product; Because the mode of exhaust all is upper exhaust mostly, so some gas can not arranged and caused gas hole defect around rising head.
The domestic production hinge beam all is specialized factory mostly, and production technology all is die model firm offer core assembly; The moulding of waterglass silica sand, core sand has so not only improved production cost with resin chromite sand (this sand kind cost is high), has also produced the defective of sand holes and crackle; The electric arc furnace smelting molten steel, the degree of purity of molten steel is not high; Cast is low to return the mouth of a river, 2 road, and poring rate is low, and the floating sand of cavity bottom is because the low floating that is difficult to of pouring molten steel speed, and floating sand wash causes the defectives such as sand holes, sand pore in the bottom of the hinge beam ears or side handles of a utensil, affect Internal Quality of Cast reduction hinge beam service life.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, a kind of hinge beam foundry goods is provided, the casting flaw eliminations such as these its sand holes of hinge beam product, crackle, pore, decrease repair welding and the polishing in foundry goods later stage, thereby improved production efficiency, reduce production cost, the quality of product is promoted steadily, improved product service life.
For achieving the above object, the technical solution used in the present invention is:
A kind of hinge beam foundry goods, this hinge beam foundry goods is circular cylinder formula structure, mainly comprise cylinder body and ten lugs that are arranged at side of cylinder block, the upper surface of described lug and the junction of cylinder body are rounding off to the outer peripheral bottom of lug, and the outward flange of described lug is arc.
The casting technique of above-mentioned hinge beam foundry goods comprises the steps:
(1) formative technology:
Adopt die model firm offer core assembly mode, the crust molding sand adopts the waterglass silica sand, and the earhole of lug adopts the iron pipe core, filling molding sand in the described iron pipe wall thickness 10 ~ 15mm, iron pipe.Use the iron pipe core can reduce core chance molten steel and wash away generation sand holes defective, thereby iron pipe also can improve the metal compaction degree at this position to the molten steel generation chilling action of contact site simultaneously, improves the working strength of foundry goods.
The external chill Quench is adopted in its outside in the bottom of lug, and described external chill specification is 80 * 200 * 60mm.Adopt iron chill shock chilling to eliminate the shrinkage defect of ear, in the service life of having improved product, reduced because ear's tension stress and the probability that cracks from the shrinkage porosite position when using.
Foundry goods is taked lower exhaust: fill straw rope, dry sand at middle in-core, nowel is offered the exhaust duct of right-angled intersection, and the both sides of iron pipe core are opened air flue and caused the sandbox outside.This exhaust mode has reduced gas hole defect.
(2) smelt cast:
Running gate system adopts ∮ 70mm sprue, hangs down and returns 4 road ∮ 50mm ingates, and described ingate is arranged at the centre position of per two groups of lugs, molten steel pot eye diameter ∮ 70mm, and molten steel is rate of climb 26mm/s in die cavity, pouring temperature 1550-1570 ℃.In this pouring technology because the mouth of a river to offer positional distance ear nearer, and pouring molten steel speed is fast, and the floating sand bottom the foundry goods is floated very soon, has reduced floating sand in the accumulation of ear, has effectively controlled the sand holes defective.
Adopt the smelting mode of electric furnace+LF refining, improve the degree of purity of molten steel, and then improved the serviceability of product.
The utlity model has following beneficial effect:
1, the utility model changes the planar end surface of ten ears into and widens rear rounding off, the suspension in the molten steel can be discharged in the rising head in the pouring molten steel process after improving like this, has solved the collection sand problem of ear's end face.
2, after the utility model is implemented, the casting flaw eliminations such as the sand holes of hinge beam, crackle, pore, decrease repair welding and the polishing in foundry goods later stage, thereby improved production efficiency, reduce production cost, the quality of product is promoted steadily, improved product service life, obtain user's favorable comment, make hinge beam become the our factory brand product.
Description of drawings
Fig. 1 is existing structure of hinged beam schematic diagram.
Fig. 2 is the utility model structure of hinged beam schematic diagram.
The specific embodiment
Below by drawings and Examples in detail the utility model is described in detail.
Fig. 1 is existing structure of hinged beam schematic diagram, hinge beam is circular cylinder formula structure, mainly comprise cylinder body and ten lugs that are arranged at side of cylinder block, the upper surface of described lug is designed to the platform form, this design causes the platform position that collection sand or slag are arranged in the pouring molten steel process, and the utility model improves (such as Fig. 2) to the lug shape, change junction to the outer peripheral bottom of lug of lug upper end and cylinder body into rounding off, the outward flange of whole lug is arc, and the middle part of lug is widened.After doing above-mentioned improvement, in the pouring molten steel process, the suspension in the molten steel can be discharged in the rising head, solve the collection sand problem of original ear end face.
The casting technique of above-mentioned hinge beam foundry goods is as follows:
1, moulding:
Adopt die model firm offer core assembly mode, special case moulding is adopted in casting, and the crust molding sand adopts the waterglass silica sand, and the proportioning of waterglass silica sand is: roughing sand silica sand 100%+ waterglass 7 ~ 8%.The earhole of lug adopts the iron pipe core, casting resin silica sand in the iron pipe wall thickness 10 ~ 15mm, iron pipe, and it is outer as the in-core exhaust that the two ends of iron pipe core cause case with straw rope.The bottom of lug adopts the external chill Quench fine and close to reach local cast sturcture in the outside, the external chill specification is 80 * 200 * 60mm.
Foundry goods is taked lower exhaust: fill straw rope, dry sand at middle in-core, nowel is offered the exhaust duct of right-angled intersection, and the both sides of iron pipe core are opened air flue and caused the sandbox outside.
2, smelt cast:
Running gate system adopts ∮ 70mm sprue, hangs down and returns 4 road ∮ 50mm ingates, and described ingate is arranged at the centre position between per two groups of lugs, molten steel pot eye diameter ∮ 70mm, and molten steel is rate of climb 26mm/s in die cavity, pouring temperature 1550-1570 ℃.In this pouring technology because the mouth of a river to offer positional distance ear nearer, and pouring molten steel speed is fast, and the floating sand bottom the foundry goods is floated very soon, has reduced floating sand in the accumulation of ear, has effectively controlled the sand holes defective.
The smelting mode is electric furnace+LF refining, and this kind smelting mode can improve the degree of purity of molten steel, and then has improved the serviceability of product.
Adopt the hinge beam inherent quality of this explained hereafter to improve a lot, the defective that field trash is piled up by ear is resolved, the change of this structure and the optimization of technique make the qualification rate of hinge beam production reach the former technique qualification rate 88% of 98%(), the soldering repair rate is reduced to the former technique repair rate 12% of 5%().
Claims (2)
1. hinge beam foundry goods, this hinge beam foundry goods is circular cylinder formula structure, mainly comprises cylinder body and is arranged at ten lugs of side of cylinder block, it is characterized in that: the upper surface of described lug and the junction of cylinder body to the outer peripheral bottom of lug is rounding off.
2. hinge beam foundry goods according to claim 1, it is characterized in that: the outward flange of described lug is arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220276112 CN202639231U (en) | 2012-06-12 | 2012-06-12 | Hinge beam casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220276112 CN202639231U (en) | 2012-06-12 | 2012-06-12 | Hinge beam casting |
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| Publication Number | Publication Date |
|---|---|
| CN202639231U true CN202639231U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220276112 Expired - Fee Related CN202639231U (en) | 2012-06-12 | 2012-06-12 | Hinge beam casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480805A (en) * | 2012-06-12 | 2014-01-01 | 鞍山华士金属制品有限公司 | Hinge beam cast and casting process thereof |
| CN104439068A (en) * | 2014-10-31 | 2015-03-25 | 贵州安吉航空精密铸造有限责任公司 | Manufacturing process of convex lug alloy part with convex lug hole |
-
2012
- 2012-06-12 CN CN 201220276112 patent/CN202639231U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480805A (en) * | 2012-06-12 | 2014-01-01 | 鞍山华士金属制品有限公司 | Hinge beam cast and casting process thereof |
| CN104439068A (en) * | 2014-10-31 | 2015-03-25 | 贵州安吉航空精密铸造有限责任公司 | Manufacturing process of convex lug alloy part with convex lug hole |
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