CN1009173B - Continuous casting process and mould for metal ball - Google Patents
Continuous casting process and mould for metal ballInfo
- Publication number
- CN1009173B CN1009173B CN 88101692 CN88101692A CN1009173B CN 1009173 B CN1009173 B CN 1009173B CN 88101692 CN88101692 CN 88101692 CN 88101692 A CN88101692 A CN 88101692A CN 1009173 B CN1009173 B CN 1009173B
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- casting
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Abstract
The present invention relates to continuous casting technology and a mould for metal balls. The continuous casting of metal balls is realized by the serial stacking combination of different types of moulds and the movement thereof. In the pouring process, subsequence casting balls are used as feeding heads of antecedence casting balls, extra pouring systems and heads are omitted, and thus, high technology production rate is obtained, and the rate can reach above 95%. As a result of continuous casting and stable technology conditions, the present invention has the advantages of high production rate, uniform structure of the casting balls, capability of carrying out normalizing or quenching by residual heat, omitted heat treating process and improved labor intensity and labor condition.
Description
What the present invention relates to is the continuous casing and the casting mold of the casting technique and the casting mold, particularly Metal Ball of Metal Ball in the Special Processes of Metal Castings technology.
The casting method of current Metal Ball is sand casting or permanent mold casting.Because the specific area of spherical foundry goods is little, heat radiation is slow, feeding difficulty in casting process, and required system of risers is bigger, thereby product yield (being the percentage that casting weight accounts for the molten iron gross weight) is lower.For the casting ball of 100 millimeters of φ, the product yield of sand casting is lower than 65%.The product yield of bead is then lower.Metal mold casting ball has the dimensional accuracy height, structure refinement, and the labor productivity advantages of higher is popularized in recent years.
Existing metal mold ball casting technique can reduce following three classes:
1, vertical-parting, a type is cast more.Because each type can cast out a plurality of balls, the production efficiency height.Use the pattern grouping mode, product yield can reach 75%.
2, horizontal parting, a type is cast more.For open form is got the convenience of ball and feeding, the muff of sand cover or other types generally need be placed in the cast gate position of mo(u)ld top half, and insulated feeder is set sometimes.Add insulated feeder and help avoiding shrinkage cavity and shrinkage porosite, and can improve product yield; But operational sequence is more, and labor productivity generally is lower than above-mentioned vertical-parting.
3, a type single casting adds the insulation cast gate.Its advantage is to prevent shrinkage cavity and shrinkage porosite effectively, operates comparatively easy.Weak point is that labor productivity is low, is not suitable for casting bead.
Above-mentioned various technology will adopt pouring and riser systems inevitably owing to all adopt monotype interrupted pour, thereby has limited the product yield of casting ball, generally is lower than 75%.
In the Special Processes of Metal Castings field, though the continuous casting technology has been used to make pipe fitting and excellent part etc. and has been easy to the foundry goods of twitching from fixing crystallizer or casting mold, but be not used to cast ball yet, this is because the casting ball is difficult for taking out from fixing mould, and is difficult for keeping continuity.
The object of the present invention is to provide a kind of continuous casting ball method and casting mold.It not only improves the product yield of casting ball, reduces the energy and raw-material consumption; And improve the inherent quality of casting ball, and can utilize waste heat to heat-treat; Raise labour productivity simultaneously, reduce labour intensity, improve working condition.
Casting ball method of the present invention is the continuous pouring process.In the continuous pouring process, with the folded combination of some secondary casting mold strings, it can move vertically downward, also can move in a circle in vertical plane.According to mould assembly cast station, cooled and solidified workshop section, the open form station, the casting ball is released station, and station is leveled in cooling, and casting mold enters so circulations such as mould assembly cast preparation workshop section, just can realize continuous pouring.In the casting process, it is riser neck that the cast passage plays the feeding passage, and the required molten metal of feeding casting ball is provided by follow-up casting mold.The ball pattern grouping of different size in every secondary casting mold, big ball are as the feeding head of bead, from the extremely big ball consecutive solidification of bead.
The casting mold of the present invention's design is poured into a mould passage by die cavity, and air discharge duct constitutes; The cast passage is linked up the upper and lower end face of casting mold, and it can have three types: first kind is that every type has ball hole, and the upper and lower side in ball hole links to each other with the cast passage respectively; Second type is that every type has big or small a plurality of balls hole, and the upper and lower side in big ball hole links to each other with the cast passage respectively, and the both sides in big ball hole or a side are connected in series gradually little successively ball hole again by ingate; The third type is that every type is provided with dedicated pouring feeding passage, and the both sides of passage or a side connect a ball hole by ingate, also can be connected in series gradually little successively ball hole more laterally.
Describe the present invention below in conjunction with accompanying drawing.
Fig. 1 is first kind of casting mold front view
Fig. 2 is first kind of casting mold vertical view
Fig. 3 is first kind of casting mold side view
Fig. 4 is second kind of casting mold front view
Fig. 5 is second kind of casting mold vertical view
Fig. 6 is second kind of casting mold side view
Fig. 7 is the third casting mold front view
Fig. 8 is the third casting mold vertical view
Fig. 9 is the third casting mold side view
Figure 10 is that continuous casing flow process master of the present invention looks schematic diagram (casting mold is made circular motion in vertical plane)
Figure 11 be among Figure 10 G to local and I to partial schematic diagram
Figure 12 be among Figure 10 H to local open form schematic diagram
Figure 13 be among Figure 10 H to local mould assembly schematic diagram
Figure 14 is that continuous casing flow process master of the present invention looks schematic diagram (casting mold moves downward vertically)
Figure 15 is the schematic side view of Figure 14.
Among the figure, (1) is casting ladle, and (2) are casting molds, and (3) are the casting balls, and (4) are cast passage that is feeding passage, and (5) are that die cavity is the ball hole, are the bead holes (5a), and (6) are ingates, and (7) are air discharge ducts, and (8) are the casting mold die joints.Used casting mold and the running gate system of casting ball method can have following three types unit combination to form continuously:
1, as Fig. 1, Fig. 2, shown in Figure 3, ball hole of every type.Every secondary casting mold (2) is formed vertical-parting by two identical half moulves of shape.Die cavity is a ball hole (5), and its upper and lower side connects the cast passage (4) of a column or other switches respectively.In the continuous pouring process, every each cycle period of secondary casting mold is only cast a ball.
2, as Fig. 4, Fig. 5, shown in Figure 6, every type has big or small a plurality of balls hole.Every secondary casting mold (2) is formed vertical-parting by two identical half moulves of switch.The die cavity middle part is cast passage (4) and big ball hole (5), and both sides are used the ball hole (5a) of ingate (6) serial connection diameter less than big ball hole (5) respectively, also can be connected in series out the littler ball hole of diameter again by ingate in the outside in both sides ball hole (5a).Like this, in the continuous pouring process, every secondary casting mold is sizes of balls pattern grouping laterally from the middle part, the casting ball from the both sides bead to ball consecutive solidification broad in the middle, the big ball in middle part is as the feeding passage of both sides bead, and the feeding molten metal of big ball self provides by the casting ball in the follow-up casting mold.This casting mold can cast out the different ball of a plurality of diameters at every turn.The side that this casting mold also can only be cheated (5) at big ball is provided with bead hole (5a), and opposite side is not provided with, casting mold as shown in Figure 10 (2).
3,, dedicated pouring feeding passage is set as Fig. 7, Fig. 8, shown in Figure 9.Every secondary casting mold is still formed vertical-parting by two identical half moulves of shape.Cast passage (4) is cylindrical or other are prismatic, and both sides or a side communicate with ball hole (5) by ingate (6), and the outside in ball hole (5) also can be provided with the less ball hole of diameter again.The cast passage (4) at this casting mold middle part plays running channel and feeding passage or riser neck, and the molten metal of feeding is still provided by the casting ball in the follow-up casting mold.The product yield of this casting mold and running gate system is a little less than preceding two types, but because without rising head, product yield still can reach 85%～90%, far above general casting technique.
Column in above-mentioned three types of casting molds and running gate system cast passage (4) is all linked up the upper and lower end face of casting mold (2), and its cross dimensions is less, only with existing casting technique in the size of riser neck of equal size casting ball suitable.Ingate (6) is all cheated (5 and 5a) along the die joint (8) of casting mold (2) and is communicated with cast passage (4) and ball.Have the air discharge duct (7) of horizontal direction on the die joint of casting mold (2).
Casting ball method can be made up, move and realize by Figure 10, mode shown in Figure 14 by the casting mold (2) of three types of above-mentioned running gate systems continuously, and they can be same type combination, also can be three types of combined crosswise.Every secondary casting mold (2) is formed vertical-parting by two identical half moulves of shape.Casting mold can be folded combination by the vertical mode string, vertically moves during cast; Also can form circularly, in vertical plane, make circular motion, perpendicular to direction of motion somatotype.The supporting of casting mold (2) and driving can be finished by hydraulic mechanism or other mechanisms.In the course of work of whole running gate system, the movement velocity of whole pattern grouping type (2) should be coordinated mutually with the poring rate of molten metal.
Metal Ball continuous casing flow process such as Figure 10, shown in Figure 14.Among the figure, the A place is casting mold (a 2) mould assembly cast station, and AC is the folded combination of casting mold (a 2) string workshop section, the B place is the open form station, and the C place releases station for casting ball (3), and the CD section is casting mold (a 2) cooling workshop section, DE is the casting mold dressing yard, enters mould assembly cast preparation workshop section for casting mold between the EA.
Along doing the disk motion mode in the vertical plane its casting ball process continuously is described according to casting mold below.
Referring to Figure 10, Figure 11, Figure 12, Figure 13, (1) is casting ladle, and (2) are casting molds, and (3) are the casting balls, (9) be the mould assembly oil cylinder, (10) are flexible restoring organs, and (11) are casting ball ejection cylinders, (12) be ball pushing rod, (13) are driving mechanisms, and (14) are the roller-way clamp mechanism, (15) be the casting mold cramp bar, (16) be main shaft, (17) are open form card hands, and (18) are the open form oil cylinders, (19) be the open form projection, (20) dominate disc mechanism.Casting mold evenly distributes in orbit radially, coil on (20) leading by cramp bar (15) hinge joint, leading dish is supported by main shaft (16), and under the effect of driving mechanism, in vertical plane, do batch (-type) and rotate, each amount of spin makes casting mold move the thickness of a casting mold just, or metal mold is rotatablely moved continuously, hydraulic-driven or other Mechanical Driven are adopted in exercises.
Before beginning cast, AC section casting mold all is in closure state.The height of the interior molten iron of control casting ladle (1) makes molten metal pour into casting mold (2) with constant speed, and the cross section diameter of liquid stream is about half of casting mold gate diameter, the phenomenon of metalling run out can not occur.When waiting to be about to fill with, a place casting mold moves to the b place rapidly, with stylish secondary casting mold (a 2) closure, occupies the position of the original casting mold of having filled with.In the process of remodeling, cast is carried out continuously.Casting ball in every secondary casting mold (2) from bead to big ball consecutive solidification.Then the big ball of a casting mold then can be used as the feeding head of last casting mold.Carry out so continuously, just make all casting balls all obtain feeding at the volley, saved other pouring and riser systemses, obtained approaching 100% product yield.
Among Figure 10, be cooled and solidified workshop section between the AB, respectively cast ball before to the B place and solidify fully that temperature is reduced to about 900 ℃.Casting mold (2) under roller-way clamp mechanism (14) and the clamping as roller-way clamp mechanism (14) among Figure 13, keeps closing the state of closing in as Figure 11 around here.
Among Figure 10, the B place is the open form station.To shown in the partial view, in rotary course, the projection (19) on the cramp bar (15) enters in the card hand (17) of open form mechanism as I among Figure 11, is drawn back on the vertical direction of relative circular motion by one group of open form oil cylinder (18).As shown in Figure 12, under the effect of flexible restoring organ (10), casting mold (2) is held open state, and the C in Figure 10, D, E to A locate closed.
The C place releases station for the casting ball among Figure 10.Under the effect of casting ball ejection cylinder (11), the casting ball (3) of off-type is released by bar (12).
Be casting mold (2) cooling workshop section between the CD among Figure 10, its temperature reduced to below 300 ℃ by water spray.
Among Figure 10 casting mold (2) dressing yard, but stenciling coating in case of necessity.
Enter mould assembly cast preparation workshop section for casting mold (2) between the EA among Figure 10.So circulation has just realized continuous casting ball.
Same principle, casting mold (2) also can be gone here and there in vertical direction and be folded combination, do motion vertically downward, see Figure 14, and Figure 15 in the cooling of casting ball, after open form is deviate from, does level, lifting, and horizontal movement forms a working cycles.
The size of each several part in above-mentioned casting mold and the running gate system depends on size, the heat treatment temperature of kind, pouring temperature, the casting ball of molten metal, the factors such as material of casting mold from pouring into a mould station to going here and there the casting mold number of plies of folding the open form station in concrete technological parameter such as poring rate, casting mold movement velocity, open form time and the flow process; Casting mold enters the required time of next working cycles from the open form station to mould assembly cast station, and in this section used casting mold number, depend on the factors such as metal material, casting mold material of casting mold cooling condition, open form temperature, cast.Used casting mold is metal mold preferably, also can be sand mold, or device for sand coated iron mould etc.For metal mold, but cheating stenciling coating or other insulation materials on the continuous cast passage, the setting time that is beneficial to prolong this part metals liquid with ball.
Ball casting technique yield rate of the present invention is much higher than existing sand mold and permanent mold casting, reaches more than 95%, thereby has saved a large amount of energy and reduced raw-material consumption.For example only casting is widely used in one of the abrading-ball of industry powder process such as mine, little mud, generating, will consume about 500,000 tons domestic every year, if adopt continuous ball casting technique, then can save the high duty alloy molten iron every year more than 200,000 tons.Owing to be continuous pouring, productivity ratio significantly improves; And be convenient to automation or mechanized operation.Again because continuous casting process conditional stability, the even tissue unanimity of casting ball has been avoided the local organization alligatoring that causes because of insulated feeder, thereby has improved the quality of casting ball.Can also utilize waste heat to carry out normalizing or quenching, save heat treatment step; Alleviate labour intensity simultaneously, improved working condition.
Claims (4)
1, a kind of Metal Ball continuous casing, casting of molten metal in casting mold is characterized in that:
(1) be cast for continuous process, its working cycles includes the mould assembly cast, and cooled and solidified, open form, casting ball are released, and cooling is leveled, and casting mold enters mould assembly cast preparation station;
(2) the folded combination of some secondary casting molds (2) string can be made circular motion in vertical plane, form the folded combination of a working cycles or some secondary casting mold strings, can move vertically downward, after the cooling of casting ball, open form are deviate from, do level, lifting, horizontal movement, form a working cycles;
(3) the required molten metal of feeding casting ball is provided by follow-up casting mold.
2, according to the described Metal Ball continuous casing of claim 1, it is characterized in that the ball pattern grouping of different size in every secondary casting mold, big ball is as the feeding head of bead, from the extremely big ball consecutive solidification of bead.
3, a kind of Metal Ball casts used casting mold continuously, is made of die cavity (5), cast passage (4) air discharge duct (7), is divided into two identical half moulves, it is characterized in that pouring into a mould passage (4) and links up the upper and lower end face of casting mold and have following three types:
(1) ball of every type cheat its upper and lower side respectively with the cast passage (4) link to each other;
(2) every type has big or small a plurality of balls hole, and the upper and lower side in big ball hole links to each other with cast passage (4) respectively, and the both sides in big ball hole or a side are connected in series gradually little successively ball hole again by ingate (6);
(3) every type is provided with dedicated pouring, feeding passage (4), and the both sides of passage or a side connect a ball hole by ingate (6), also can be connected in series gradually little successively ball hole laterally.
4, according to the described casting mold of claim 3, the size that it is characterized in that pouring into a mould the riser neck of equal size casting ball in the cross dimensions of passage (4) and the existing casting technique is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101692 CN1009173B (en) | 1988-04-06 | 1988-04-06 | Continuous casting process and mould for metal ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101692 CN1009173B (en) | 1988-04-06 | 1988-04-06 | Continuous casting process and mould for metal ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN88101692A CN88101692A (en) | 1988-10-12 |
| CN1009173B true CN1009173B (en) | 1990-08-15 |
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ID=4831851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88101692 Expired CN1009173B (en) | 1988-04-06 | 1988-04-06 | Continuous casting process and mould for metal ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1009173B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002053309A1 (en) * | 2001-01-04 | 2002-07-11 | Shengyi Qin | Combined casting mold and application in centrifugal casting |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319871A (en) * | 2011-09-15 | 2012-01-18 | 王惠臣 | Lost-foam casting high-chromium cast iron residual heat treatment production method |
| CN103418745A (en) * | 2013-07-12 | 2013-12-04 | 西华大学 | String casting method for filling sand mold lost foams piece by piece (group) |
| CN104785727A (en) * | 2015-04-29 | 2015-07-22 | 兴城市安迈汽车部件制造有限公司 | Continuous casting production line device and casting method for brake hubs |
| CN108746498A (en) * | 2018-08-27 | 2018-11-06 | 湖北美利林科技有限公司 | High ferro water use efficiency device for sand coated iron mould abrading-ball template |
| WO2020124733A1 (en) * | 2018-12-18 | 2020-06-25 | 陈坤林 | Granulation machine for casting molten iron into granular product in smelting of iron alloy series products |
-
1988
- 1988-04-06 CN CN 88101692 patent/CN1009173B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002053309A1 (en) * | 2001-01-04 | 2002-07-11 | Shengyi Qin | Combined casting mold and application in centrifugal casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN88101692A (en) | 1988-10-12 |
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