CN204413064U - A kind of oil drilling pump crosshead die - Google Patents

A kind of oil drilling pump crosshead die Download PDF

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Publication number
CN204413064U
CN204413064U CN201520069590.3U CN201520069590U CN204413064U CN 204413064 U CN204413064 U CN 204413064U CN 201520069590 U CN201520069590 U CN 201520069590U CN 204413064 U CN204413064 U CN 204413064U
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CN
China
Prior art keywords
external mold
upper external
chill
rising head
ingate
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Expired - Fee Related
Application number
CN201520069590.3U
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Chinese (zh)
Inventor
宇文天合
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Co Ltd Is Made In Alloying Of Sky Xingping City
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Co Ltd Is Made In Alloying Of Sky Xingping City
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Application filed by Co Ltd Is Made In Alloying Of Sky Xingping City filed Critical Co Ltd Is Made In Alloying Of Sky Xingping City
Priority to CN201520069590.3U priority Critical patent/CN204413064U/en
Application granted granted Critical
Publication of CN204413064U publication Critical patent/CN204413064U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of oil drilling pump crosshead die, comprise external mold and lower external mold, upper external mold, lower external mold form the outer contour shape of crosshead foundry goods, and inner chamber mud core forms inner die cavity; Upper external mold side has sprue, and sprue is vertically arranged; Upper external mold die joint place is provided with U-shaped distribution cross gate, and upper external mold die joint place is also provided with ingate c, d, and ingate c, d are connected with cross gate and upper external mold; The top of upper external mold is provided with circular thin-wall flange, annular flange is arranged rising head a and rising head b, and rising head a and rising head b is all pressed on annular flange; Upper external mold top center is placed with chill a, and sidewall is placed with chill b and chill c.The utility model makes crosshead can reduce the thick general goal of wall thickness when pouring into a mould and solidify the temperature at overheated place, can play the effect eliminating thermal center, Equilibrium Solidification, makes that the crosshead casting hardness produced is evenly distributed, inner chamber cleans, and improves yields.

Description

A kind of oil drilling pump crosshead die
Technical field
The utility model belongs to metal casting technique field, is specifically related to a kind of oil drilling pump crosshead die.
Background technology
Oil drilling pump is one of capital equipment of oilfield exploitation, and the crosshead in production pump is then one of important Power Component, directly affects the functional reliability of whole drilling pump.At present, the casting technique of crosshead foundry goods generally adopts the mode of upright casting teeming, namely first by the opening thin part of mould upward, thicker conical section is placed under casing, introduces iron liquid by teeming, thus heating top thin wall portion.But in actual production, this method thermoregulation effect is not good, effectively cannot eliminates the temperature difference brought because of casting section thickness difference and solidify thermal center, causing conical section inwall spherical face knockout and inclusion defect.When equipment works, these knockouts just fall into working face with being mingled with, and the equipment that affects runs well; The crosshead casting hardness skewness prepared by conventional method, follow-up palpus is up-to-standard by normalizing, annealing operation ability, which decreases production efficiency, also greatly increases increase production cost.
Utility model content
The purpose of this utility model is to provide a kind of oil drilling pump crosshead die, solves crosshead core cavity knockout that existing mold casts out and is mingled with and the problem of integral hardness skewness.
The technical scheme that the utility model adopts is, a kind of oil drilling pump crosshead die, comprises external mold and lower external mold, and upper external mold, lower external mold form the outer contour shape of crosshead foundry goods, and inner chamber mud core forms inner die cavity; Upper external mold side has sprue, and sprue is vertically arranged; Upper external mold die joint place is provided with U-shaped distribution cross gate, and upper external mold die joint place is also provided with ingate c and ingate d, and ingate c is connected with cross gate and upper external mold with ingate d; The top of upper external mold is provided with circular thin-wall flange, annular flange is arranged rising head a and rising head b, and rising head a and rising head b is all pressed on annular flange; Upper outer mold top is placed with chill a, and sidewall is placed with chill b and chill c.
Feature of the present utility model is also,
Chill a is positioned at the central authorities of outer mold top.
Chill b and chill c lays respectively at immediately below rising head a and rising head b.
The ratio of the cross-sectional area of sprue, cross gate, ingate c and ingate d is 2.5:0.8:1:1.
The choked flow cross section of sprue is not more than ¢ 50mm.
The beneficial effects of the utility model are,
A kind of oil drilling pump crosshead die, by the mould of traditional crosshead is inverted, and change cast gate and rising head position, make the full and uniform filling mold cavity of iron liquid energy, and, by the chill placed at mould specific position, make crosshead can reduce the thick general goal of wall thickness when pouring into a mould and solidify the temperature at overheated place, compared to existing mold, the effect eliminating thermal center, Equilibrium Solidification can be played, make that the crosshead casting hardness produced is evenly distributed, inner chamber cleans, improve yields.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of oil drilling pump crosshead die of the utility model;
Fig. 2 is the top view of a kind of oil drilling pump crosshead die of the utility model.
In figure, 1. rising head b, 2. sprue, 3. chill c, 4. goes up external mold, 5. cross gate, 6. rising head a, 7. chill a, 8. chill b, 9. ingate c, 10. inner chamber mud core, 11. times external molds, 12 ingate d, 13. annular flanges, 14. locating cones.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As depicted in figs. 1 and 2, a kind of oil drilling pump crosshead die, comprise external mold 4 and lower external mold 11, upper external mold 4, lower external mold 11 form the outer contour shape of crosshead foundry goods, and the inner chamber mud core 10 of upper external mold 4 and lower external mold 11 forms inner die cavity; Upper external mold 4 side has sprue 2, and sprue 2 is vertically arranged; The die joint place of upper external mold 4 is provided with U-shaped distribution cross gate 5, and the die joint place of upper external mold 4 is also provided with ingate c9 and ingate d12, and ingate c9 is connected with cross gate 5 and upper external mold 4 with ingate d12; The ratio of the cross-sectional area of sprue 2, cross gate 5, ingate c9 and ingate d12 is 2.5:0.8:1:1, and the choked flow cross section of sprue 2 is not more than ¢ 50mm.The top of upper external mold 4 is provided with the annular flange 13 of thin-walled, annular flange 13 is provided with rising head a6 and rising head b1, and rising head a6 and rising head b1 is all pressed on annular flange 13; Upper external mold 4 top center is placed with chill a7, and chill a7 is positioned at the central authorities at external mold 4 top, and upper external mold 4 sidewall is placed with chill b8 and chill c3, and chill b8 and chill c3 lays respectively at immediately below rising head a6 and rising head b1.
During the using method of this device, first the lower external mold 11 of this device is implemented moulding operation, form the lower sand mold that shape is inverted oil drilling pump crosshead outer shape sand mold;
Upper external mold 4, through moulding operation, forms the upper sand mold that shape is inverted oil drilling pump crosshead outer shape sand mold; The assembling mould full pattern of sprue 2, the mould full pattern of rising head a6 and rising head b1 before top box moulding, mould full pattern is put into top chill a7, sidewall lets cool the cast iron full pattern of iron b8 and chill c3, can implement top box moulding operation.Cross gate 5 and ingate c9, ingate d12 were fastener mold full pattern originally, moulding self-assembling formation running channel sand mold cavity.
Coremaking forms the inner chamber mud core 10 that shape is inverted oil drilling pump crosshead interior shape; Buckle sand mold fall into inner chamber mud core 10 and 3 location abrasive cones 14 in lower sand mold after, and lock, use to be cast.
During cast, molten metal injects the die cavity of sand mold up and down assembled through sprue 2, cross gate 5, ingate c9 and ingate d12.Molten metal slowly raises bottom lower sand mold, is full of to top rising head a6, rising head b1, stops cast.Casting complete is after 12 hours, through unpacking, after knockout, cleaning process, and just obtained oil drilling pump crosshead foundry goods.
In the utility model, design of mould cavity is become inverted oil drilling pump crosshead shape, because oil drilling pump crosshead is originally as nearly 6.5 times of wall thickness variation, tradition is just putting upright casting method, after casting complete, top thin-walled skin depth solidifies comparatively early, and rising head cannot thick auger body region bottom feeding, causes shrinkage porosite and foundry goods integral hardness uneven phenomenon bottom foundry goods.Original mould reversal is innovatively come by this device, and redesigning cast gate quantity and position, when casting mold each several part is poured into a mould, temperature is tending towards even, reduces overall temperature difference gradient, reach the casting method of Equilibrium Solidification, obtain that dense structure, cleannes are high, the uniform foundry goods of hardness.Meanwhile, this device is provided with horizontal running channel between cope and drag box, reduces and injects iron liquid drop, reduces molten metal and washes away sand mold, eliminates core cavity and is mingled with, reduce percent defective.Further, chill a is set at cope top, reduces the temperature of the Low-temperature Iron liquid of foundry goods thicker part further, can effectively eliminate shrinkage porosite phenomenon; Arranging chill b and chill c at the sidewall of cope, is to reduce rising head a and rising head b root temperature, effectively preventing the shrinkage porosite phenomenon of foundry goods near rising head, reduce further casting solidification and make thermograde, reduces the possibility that waste product occurs.

Claims (5)

1. an oil drilling pump crosshead die, it is characterized in that, comprise external mold (4) and lower external mold (11), described upper external mold (4), lower external mold (11) form the outer contour shape of crosshead foundry goods, and the inner chamber mud core (10) of upper external mold (4) and lower external mold (11) forms inner die cavity; Upper external mold (4) side has sprue (2), and sprue (2) is vertically arranged; The die joint place of upper external mold (4) is provided with U-shaped distribution cross gate (5), the die joint place of upper external mold (4) is also provided with ingate c (9) and ingate d (12), ingate c (9) are connected with cross gate (5) and upper external mold (4) with ingate d (12); The top of upper external mold (4) is provided with the annular flange (13) of thin-walled, annular flange (13) being provided with rising head a (6) and rising head b (1), rising head a (6) and rising head b (1) is all pressed on annular flange (13); Upper external mold (4) top is placed with chill a (7), and upper external mold (4) sidewall is placed with chill b (8) and chill c (3).
2. a kind of oil drilling pump crosshead die according to claim 1, is characterized in that, described chill a (7) is positioned at the central authorities at external mold (4) top.
3. a kind of oil drilling pump crosshead die according to claim 1, is characterized in that, described chill b (8) and chill c (3) lay respectively at immediately below rising head a (6) and rising head b (1).
4. a kind of oil drilling pump crosshead die according to claim 1, it is characterized in that, the ratio of the cross-sectional area of described sprue (2), cross gate (5), ingate c (9) and ingate d (12) is 2.5:0.8:1:1.
5. a kind of oil drilling pump crosshead die according to any one of claim 1-4, is characterized in that, the choked flow cross section of described sprue (2) is not more than ¢ 50mm.
CN201520069590.3U 2015-01-30 2015-01-30 A kind of oil drilling pump crosshead die Expired - Fee Related CN204413064U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520069590.3U CN204413064U (en) 2015-01-30 2015-01-30 A kind of oil drilling pump crosshead die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520069590.3U CN204413064U (en) 2015-01-30 2015-01-30 A kind of oil drilling pump crosshead die

Publications (1)

Publication Number Publication Date
CN204413064U true CN204413064U (en) 2015-06-24

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Application Number Title Priority Date Filing Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107186175A (en) * 2017-05-27 2017-09-22 大连华锐重工集团股份有限公司 A kind of casting technique of CAP1400 cores main pump pump case
CN107931571A (en) * 2017-10-25 2018-04-20 重庆檀科科技有限公司 Crosshead alloy-layer pouring technology
CN110216245A (en) * 2019-04-20 2019-09-10 福建大通互惠精密铸造有限公司 150 pounds of brake valve body portions of one kind are without hot top mould and design method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107186175A (en) * 2017-05-27 2017-09-22 大连华锐重工集团股份有限公司 A kind of casting technique of CAP1400 cores main pump pump case
CN107931571A (en) * 2017-10-25 2018-04-20 重庆檀科科技有限公司 Crosshead alloy-layer pouring technology
CN107931571B (en) * 2017-10-25 2019-11-29 东阳市琰安建筑工程有限公司 Crosshead alloy-layer pouring technology
CN110216245A (en) * 2019-04-20 2019-09-10 福建大通互惠精密铸造有限公司 150 pounds of brake valve body portions of one kind are without hot top mould and design method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150624

Termination date: 20160130

EXPY Termination of patent right or utility model