CN106513586A

CN106513586A - Mine-crusher upper frame casting method

Info

Publication number: CN106513586A
Application number: CN201611041040.6A
Authority: CN
Inventors: 邓宏; 刁乃松; 宋恩余
Original assignee: Anshan Iron And Steel Plant Cast Steel Co Ltd
Current assignee: Anshan Iron And Steel Plant Cast Steel Co Ltd
Priority date: 2016-11-22
Filing date: 2016-11-22
Publication date: 2017-03-22
Anticipated expiration: 2036-11-22
Also published as: CN106513586B

Abstract

The invention relates to a mine-crusher upper frame casting method. A crusher upper frame casting is divided into an upper portion and a lower portion according to the structure characteristic of the casting, wherein the casting upper portion is of a ring structure with the two ends provided with flanges, a scraper core assembly mode is adopted by the casting upper portion for modeling, and the top of the casting upper portion is provided with a ring riser; the casting lower portion is of a cross beam structure, real sample modeling is adopted by the casting lower portion, and the central portion of the casting lower portion is provided with a blind riser; the casting is poured through a method of combining bottom pouring and stepped nozzle pouring, the casting process is accurately simulated through casting simulating software MAGMA, and a final scheme is determined; and molten steel for pouring is subjected to treatment in an electric furnace and LF refining, vacuum treatment is conducted, and then most gas and non-metallic inclusions in the molten steel are removed. According to the mine-crusher upper frame casting method, microscopic casting defects such ad internal shrinkage of a frame can be reduced, the quality of casting products can be improved, on-machine service life of the casting can be prolonged, and domestication of castings for imported crusher equipment is achieved.

Description

A kind of casting method of In Mine Crusher upper frame

Technical field

The present invention relates to casting technology field, more particularly to a kind of casting method of In Mine Crusher upper frame.

Background technology

H8800 disintegrating machines be Sweden's production H it is serial in a kind of the most advanced disintegrating machine, its advantage is production capacity High, excellent in efficiency, product granularity are uniform, and the program control degree of digital manipulation is high, and every protective value is high, whole automation mechanized operations etc..Mesh The H8800 gyratory crushers maintenance that front domestic enterprise uses adopts external import spare and accessory parts substantially, not only expends substantial amounts of fund, The production development of enterprise and the supply time is long, is seriously constrained, therefore is badly in need of solving the production domesticization of the disintegrating machine spare and accessory parts and asked Topic.

Upper frame is extremely crucial part in In Mine Crusher equipment, and which is foundry goods, due to structure it is complex, in casting Make rear flange fillet part and crackle easily occur, make crystal phase analysis after dissection, it is found that there is microporosity defect inside, the defect Result in foundry goods finally to scrap；For the problem for existing, research of technique is We conducted, the casting technique of upper frame is changed Enter.

The content of the invention

The invention provides a kind of casting method of In Mine Crusher upper frame, can reduce the microcosmic such as support body internal porosity Casting flaw, improves casting product quality, extends foundry goods and uses on the machine the life-span；Realize the domestic of import crusher foundry goods Change.

In order to achieve the above object, the present invention employs the following technical solutions realization：

A kind of casting method of In Mine Crusher upper frame, it is characterised in that comprise the steps：

1), when formulating casting technique, disintegrating machine upper frame foundry goods is divided into into upper and lower two parts by its construction features, on foundry goods Portion is the flanged (FLGD) loop configuration in two ends, and foundry goods bottom is beam structure；The moulding by the way of scraper plate group core of foundry goods top, top Portion sets feed-ring；Foundry goods bottom adopts full pattern moulding, and centre sets blind riser；Foundry goods adopts rising pouring+staged cast side Method is poured into a mould；

2) foundry goods bottom carries out moulding in sandbox using overall full pattern, after the completion of full pattern moulding, sandbox is integrally overturn 180 °, take out full pattern；Scraper plate is set, enters down bottom core afterwards, bottom core adopts repetitional structure；In correspondence foundry goods lower central Position sets blind riser, and bullet core is set in blind riser, sets annular and mend lining around blind riser, and two sides of correspondence beam structure are equipped with External chill, it is ensured that the feeding effect of blind riser；

3), under after complete bottom core, by the outer core on the lower foundry goods top of scraper plate line, outer core adopts repetitional structure；The each decile of outer core Gap between structure is close tight；External chill is set at companion flange knuckle；

4) under, complete outer core, removes scraper plate, will enter cavity bottom core print position, outer core and centre by process under intermediate core Fixed using Rod Bracing between core, prevent mutual position play；

5) will be good under feed-ring outer core by band wire and process, packaged with sandbox, and reality is buried with sand；

6) using rising pouring+staged cast, foundry goods bottom is returned inner nozzle by the uniform multiple bottoms of bottom center and is poured Note, each bottom pour mold inner nozzle passes through ring gate one and cross gate is connected with sprue；Foundry goods top is by correspondence upper flanges portion Position and along the circumferential direction uniform multiple tangential inner nozzle cast, tangential inner nozzle is connected with sprue by ring gate two；

7) instrument is surveyed using die cavity control and check whether there are debris in casting mold die cavity, confirm to be poured into a mould after cleaning in die cavity；Adopt Poured into a mould with step type water gap, shorten the stamp time, accomplish that low temperature is poured soon；Cast molten steel is after electric furnace+LF refining, then Jing vacuum Process, remove wherein most gas and non-metallic inclusion；

8) cast(ing) surface adopts fluorescent magnetic powder inspection, it is ensured that surface quality；Two end flanges on foundry goods top adopt ultrasound wave UT detects a flaw, it is ensured that internal soundness meets technical requirements.

Compared with prior art, the invention has the beneficial effects as follows：

1) foundry goods body is divided into upper and lower two parts, i.e., flanged (FLGD) annular cast by the construction featuress according to upper frame Part and the thicker header portion of wall thickness, are respectively provided with rational rising head for two-part construction featuress, improve the interior of foundry goods Portion's quality；

2) bottom core is 1/2 repetitional structure, and outer core is 1/6 repetitional structure, and more conventional method reduces decile quantity；Not only Lower core error can be reduced, and reduces lower core and split the drop problem that seamed belt is come, it is ensured that the cleanliness factor of die cavity, further be improved The inherent quality of foundry goods；

3) as shown in figure 5, when conventional crusher upper frame casts, rising head is generally multiple using middle part 1# rising head 14 and outer ring The setting form of the mono- rising heads of 2# 15, the outside of the mono- rising heads of each 2# 15 are respectively provided with rising head and mend lining 16；The present invention is using annular insulation Rising head replaces the mono- rising heads 15 of 2#, is more beneficial for floating, the aerofluxuss of impurity, makes foundry goods body obtain effective feeding；

4) foundry goods lower beam part of wall is thick big, and feeding is difficult, and the present invention takes and arranges blind riser in centre, together When arrange annular mend lining and bullet core, improve the feeding efficiency of blind riser；In addition, external chill is equipped with two sides of crossbeam, Can further improve the feeding effect of rising head；

5) running gate system adopts bottom filling, ladder water-gap pouring, shortens the stamp time, accomplishes that low temperature is poured soon, it is ensured that foundry goods Global tissue is fine and close, reduces the casting flaw of interior microscopic shrinkage porosite.

Description of the drawings

Fig. 1 is the structural representation of disintegrating machine upper frame foundry goods of the present invention.

Fig. 2 is the schematic diagram one of upper frame casting method of the present invention.

Fig. 3 is the schematic diagram two of upper frame casting method of the present invention.

Fig. 4 is the schematic diagram three of upper frame casting method of the present invention.

When Fig. 5 is disintegrating machine upper frame routine casting, rising head arranges form.

In figure：1. 2. foundry goods bottom of foundry goods top, 3. feed-ring, 4. header portion external chill, 5. flange transition circumference External chill 6. annular in part mends 10. ring gate of lining 7. blind riser, 8. cross gate, 9. sprue, one 11. ring gate two Return mono- 16. rising heads of rising head of 13. tangential ingate 14.1# rising head 15.2# of ingate and mend lining in 12. bottoms

Specific embodiment

Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further：

A kind of casting method of In Mine Crusher upper frame, comprises the steps：

1) as shown in figure 1, when formulating casting technique, disintegrating machine upper frame foundry goods is divided into upper and lower two by its construction features Part, foundry goods top 1 are the flanged (FLGD) loop configuration in two ends, and foundry goods bottom 2 is beam structure；Foundry goods top 1 adopts scraper plate group The mode moulding of core, top sets feed-ring 3；Foundry goods bottom 2 adopts full pattern moulding, and centre sets blind riser 7；Foundry goods is adopted Rising pouring+staged pouring procedure cast；

After disintegrating machine upper frame foundry goods moulding and casting program determine, casting is accurately simulated by casting simulation software MAGMA Process is made, various casting flaws is predicted, and is carried out modifications and adaptations；After simulation casting does not have any internal flaw to produce, It is determined that final casting process scheme；

2) foundry goods bottom 2 carries out moulding in sandbox using overall full pattern, after the completion of full pattern moulding, sandbox is integrally overturn 180 °, take out full pattern；Scraper plate is set, enters down bottom core afterwards, bottom core adopts 1/2 repetitional structure；As shown in Figure 2 and Figure 3, exist The position at 2 center of correspondence foundry goods bottom sets blind riser 7, sets bullet core in blind riser 7, sets annular and mend lining 6 around blind riser 7, right Two sides of beam structure are answered to be equipped with external chill 4, it is ensured that the feeding effect of blind riser 7；

3), under after complete bottom core, by the outer core on the lower foundry goods top 1 of scraper plate line, outer core adopts 1/6 repetitional structure；Outer core is adopted Use 1/6 repetitional structure；Gap between each repetitional structure of outer core is close tight with asbestos cord near casting portion；Companion flange transition circle External chill 5 is set at angle；

5) will be good under 3 outer core of feed-ring by band wire and process, packaged with sandbox, and reality is buried with sand；

6) as shown in figure 4, using rising pouring+staged cast, foundry goods bottom 2 is by the uniform multiple bottoms of bottom center Return inner nozzle 12 to pour into a mould, each bottom pour mold inner nozzle 12 passes through ring gate 1 and cross gate 8 is connected with sprue 9；Foundry goods top 1 Poured into a mould by corresponding to upper flanges position and along the circumferential direction uniform multiple tangential inner nozzle 13, tangential inner nozzle 13 passes through ring Shape running channel 2 11 is connected with sprue 9；

The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept equivalent or change in addition, should all be included within the scope of the present invention.

Claims

1. a kind of casting method of In Mine Crusher upper frame, it is characterised in that comprise the steps：

1) when formulating casting technique, disintegrating machine upper frame foundry goods is divided into into upper and lower two parts by its construction features, foundry goods top is The flanged (FLGD) loop configuration in two ends, foundry goods bottom are beam structure；The moulding by the way of scraper plate group core of foundry goods top, top sets Feed-ring；Foundry goods bottom adopts full pattern moulding, and centre sets blind riser；Foundry goods is poured using rising pouring+staged pouring procedure Note；

2) foundry goods bottom carries out moulding in sandbox using overall full pattern, after the completion of full pattern moulding, sandbox is integrally overturn 180 °, Take out full pattern；Scraper plate is set, enters down bottom core afterwards, bottom core adopts 1/2 repetitional structure；In the portion of correspondence foundry goods lower central Position sets blind riser, and bullet core is set in blind riser, sets annular and mend lining around blind riser, and two sides of correspondence beam structure are with addition Chill, it is ensured that the feeding effect of blind riser；

3), under after complete bottom core, by the outer core on the lower foundry goods top of scraper plate line, outer core adopts 1/6 repetitional structure；The each decile of outer core Gap between structure is close tight；External chill is set at companion flange knuckle；

4) under, complete outer core, removes scraper plate, will enter cavity bottom core print position by process under intermediate core, outer core and intermediate core it Between fixed using Rod Bracing, prevent mutual position play；

6) using rising pouring+staged cast, inner nozzle cast is returned by the uniform multiple bottoms of bottom center in foundry goods bottom, respectively Bottom pour mold inner nozzle passes through ring gate one and cross gate is connected with sprue；Foundry goods top passes through correspondence upper flanges position and edge The uniform multiple tangential inner nozzle cast of circumferencial direction, tangential inner nozzle is connected with sprue by ring gate two；

7) instrument is surveyed using die cavity control and check whether there are debris in casting mold die cavity, confirm to be poured into a mould after cleaning in die cavity；Using rank Ladder type water-gap pouring, shortens the stamp time, accomplishes that low temperature is poured soon；Cast molten steel after electric furnace+LF refining, then at Jing vacuum Reason, removes wherein most gas and non-metallic inclusion；

8) cast(ing) surface adopts fluorescent magnetic powder inspection, it is ensured that surface quality；Two end flanges on foundry goods top are visited using ultrasound wave UT Wound, it is ensured that internal soundness meets technical requirements.