CN103381480B - Processing method for rolling casting device - Google Patents

Abstract

The invention relates to the field of sand casting, particularly to a processing method for a rolling casting device. The processing method comprises the following steps: a casting box is manufactured through moulding, the casting box is fixed on a rolling box in the rolling casting device, positioned by utilizing a chuck plate, and integrally fixed by utilizing a pressing plate, and the casting operation is automatically completed sequentially through pouring, liquid steel solidifying, demoulding and clearing processes. According to the invention, rapid rotation of the rolling box is utilized, so that the punching speed of the liquid steel is increased, the casting defects are reduced, and the quality of casting is improved, and compared with the traditional technology, the number of sand box dies is greatly reduced, the casting period is shortened, the casting cost is decreased, and the batch of casting is realized.

Description

A kind of processing method of the casting device that rolls

Technical field

The present invention relates to sand casting field, particularly relate to a kind of processing method of the casting device that rolls.

Background technology

Casting technique, it comprises moulding, coremaking, cast, knockout, cleaning and post processing thereof etc., it is the core of Foundry Production, be the key can producing premium casting, raising and development process level be considered as improving of promotion industry technology and meet an important component part of economy and social development needs.Whether pouring technology is selected reasonable, and the quality of cast job engineering, all directly has influence on the quality of foundry goods.Static state is cast, especially for foundry goods (below the weight 60kg of large batch of smallclothes, external diameter Φ 65 ~ Φ about 105mm), as the Y-piece on petrifaction ethylene pyrolysis furnace radiant coil device, band hanger 90 ° of elbows, 180 ° of elbows, twisted sheets etc., there is purposes widely in the important events of a lot of industrial circle.The method of sand casting that what current most domestic traditional handicraft adopted is, uneven due to molten steel flow velocity when traditional handicraft is poured into a mould, cause molten steel feeding rate variance, foundry goods is easily made respectively partly to produce temperature difference, during molten steel solidification, foundry goods easily produces shrinkage porosite, the casting flaws such as shrinkage cavity, in order to control because the flow velocity of molten steel during cast is unbalanced and cause the decline of casting quality, formulate correct casting technique, what control foundry goods solidifies direction and process, reduce casting flaw, thus reduction manufacturing cost, enhance productivity, therefore, for small lot foundry goods, invention casting device also adopts corresponding casting technique to seem particularly important.

Summary of the invention

Object of the present invention is exactly the processing method that will provide a kind of casting device that rolls, and it can overcome the above deficiency that prior art exists.The object of the present invention is achieved like this, and a kind of processing method of the casting device that rolls, is characterized in that: procedure of processing is as follows;

(1) moulding:

1). prepare chill, alignment pin, insulated feeder, arbor, sandbox, coating;

2). review and validate mould, die surface cleans out rear also brushing releasing agent;

3). top box moulding, adjustment sandbox is also put well, starts moulding after placing muscle of codding,

Back-up sand hole, a few place is respectively done, then back-up sand mould to be covered at core print place;

4) nowel moulding, arranges running channel by technological requirement, and all porcelain tube interface adhesive tapes are wound around and cement, and put alignment pin, adjustment sandbox mold thickness, and all the other are with top box moulding, wait for the demoulding;

5) coremaking, hangs in core box by arbor, closes core box, tight with F kayser, is fixed by arbor, erect core box with galvanized wire, loads quartz sand;

6). finishing, repair die cavity and loam core, damaged and cracks will be repaired, clean with dust catcher process, to die cavity and loam core swabbing.

7). fall core, and cleaning nowel, makes loam core steadily fall into; If any defect, repair defect place, and swabbing is dried; In clearance back-up sand, and check core print;

8). mould assembling, falls into alignment pin, and die joint asbestos yarn seals, by mould assembling after top box upset; Sandbox surrounding is welded, and nowel is connected as a single entity; From top box back-up sand hole back-up sand, real striking off of pounding, becomes molding box;

(2) pour into a mould:

1). check that whether Rolling device each position part is fastening, normal operation; Confirm errorless after will roll case place horizontal level;

2). molding box prepares and installs

Ready molding box is fixed on rolling case; With clamp, molding box is positioned, more fixing by pressing plate entirety;

3). molten steel prepares

Can notify tapping after sandbox is ready to, ensure that liquid steel temperature, chemical composition, ferrite content meet technological requirement, molten steel flows into reservoir from cast gate;

4) pour into a mould

Start braking motor, by the effect of reductor and shaft coupling, make rolling case carry out clockwise 90 ° of rotations, now, molten steel with uniform flow velocity from reservoir injection type chamber, when roll case clockwise 90 ° move to appropriate location time, touch stroke switchgear, casting complete;

5) solidification of molten steel

Make rolling case keep contacting with travel switch, solidify according to the process time;

Described rolling case keeps the time contacted with travel switch to be 1.5 times of process time;

6) demoulding

After unloading lower platen, start and reversely rotate switch, make the counterclockwise 180 ° of rotations of rolling case; When the case that rolls rotates to travel switch position, foundry goods Automatic-falling; Touch travel switch simultaneously, braking motor is stopped operating;

7) clear up

Keep clean in rolling case, then start casting device, make rolling case place horizontal level, wait for cast next time.

Present invention optimizes running gate system, decrease cast distortion, be conducive to ensureing casting accuracy and surface quality.Molten steel feeding rate is fast, and what effectively control foundry goods solidifies direction and process, makes it according to the direction determined or consecutive solidification, so that liquid towards shrinks and solidification shrinkage implements effective feeding.Avoid producing the casting flaws such as shrinkage cavity and porosity.Enhance productivity, reduce labour intensity.Reduce mould assembling, shorten moulding operation.Carry out in enormous quantities making.The present invention utilizes rolling case by fast rotational, improves the stamp speed of molten steel, decreases casting flaw.The quality of foundry goods is improved, and compared with traditional handicraft, greatly saves the number of molds of sandbox, shortens casting cycle, reduce casting cost, and achieves the batch casting of foundry goods, is specially adapted to sand casting.

Accompanying drawing explanation

Fig. 1 is that the present invention rolls the structural representation of casting device;

Fig. 2 is that horizontal level structural representation placed by rolling case;

Turn clockwise when Fig. 3 pours into a mould schematic diagram;

Rolling case position view time under Fig. 4 pressing plate is imperial;

Schematic diagram is rotated counterclockwise during Fig. 5 demoulding;

1. left support, 2,3 bearings, bearing block, 4. roll case, 5,6 bearings, bearing block, 7. shaft coupling, 8. reductor, 9. braking motor, 10. right part supports, 11. base plates, 12. limit sticks, 13. travel switches, 14. reservoirs, 15. molding boxes.

Detailed description of the invention

Below in conjunction with accompanying drawing, the invention will be further described;

To roll the processing method of casting device, it is characterized in that: procedure of processing is as follows;

(1) moulding:

1). prepare chill, alignment pin, insulated feeder, arbor, sandbox, coating;

2). review and validate mould, die surface cleans out rear also brushing releasing agent;

3). top box moulding, adjustment sandbox is also put well, starts moulding after placing muscle of codding,

Back-up sand hole, a few place is respectively done, then back-up sand mould to be covered at core print place; Sand is pounded consolidation by attention sand rammer.After molding sand solidification, knock mould and complete the demoulding.

4) nowel moulding, arranges running channel by technological requirement, and all porcelain tube interface adhesive tapes are wound around and cement, and put alignment pin, adjustment sandbox mold thickness, and all the other are with top box moulding, wait for the demoulding;

5) coremaking, hangs in core box by arbor, closes core box, tight with F kayser, is fixed by arbor, erect core box with galvanized wire, loads quartz sand; Note each a small amount of loading, pound in fact and continue again to load.Treat to harden in loam core, complete the demoulding.

6). finishing, repair die cavity and loam core, damaged and cracks will be repaired, clean with dust catcher process, to die cavity and loam core swabbing.

7). fall core, and cleaning nowel, makes loam core steadily fall into; If any defect, repair defect place, and swabbing is dried; In clearance back-up sand, and check core print;

8). mould assembling, falls into alignment pin, and die joint asbestos yarn seals, and by mould assembling after top box upset, notes checking adjustment; Sandbox surrounding should be welded, and nowel is connected as a single entity; From top box back-up sand hole back-up sand, real striking off of pounding, becomes molding box;

(2) pour into a mould:

1) check that whether Rolling device each position part is fastening, normal operation; Confirm errorless after will roll case place horizontal level, as shown in Figure 2;

2) molding box prepares and installs

Ready molding box is fixed on rolling case 4; With clamp, molding box is positioned, more fixing by pressing plate entirety;

3) molten steel prepares

Notice tapping after sandbox is ready to, ensure that liquid steel temperature, chemical composition, ferrite content meet technological requirement, molten steel flows into reservoir from cast gate;

4) pour into a mould

Start braking motor 9, by the effect of reductor 8 and shaft coupling 7, make rolling case 4 carry out clockwise 90 ° of rotations, now, molten steel with uniform flow velocity from reservoir injection type chamber, when the case 4 that rolls clockwise 90 ° move to appropriate location time touch travel switch 13, casting complete, as shown in Figure 3;

5) solidification of molten steel

Make rolling case 4 keep contacting with travel switch 13, solidify according to the process time; Described rolling case 4 keeps the time contacted with travel switch 13 to be 1.5 times of process time;

6) demoulding

After unloading lower platen, start and reversely rotate switch, make the counterclockwise 180 ° of rotations of rolling case 4; When the case 4 that rolls rotates to travel switch 13 position, foundry goods Automatic-falling; Touch travel switch simultaneously, braking motor 9 is stopped operating, as shown in Figure 4, Figure 5;

7) clear up

Make in rolling case 4, to keep clean, then start casting device, make rolling case 4 place horizontal level, wait for cast next time.

Claims (2)

1. to roll the processing method of casting device, it is characterized in that: procedure of processing is as follows;

(1) moulding:

1). prepare chill, alignment pin, insulated feeder, arbor, sandbox, coating;

2). review and validate mould, die surface cleans out rear also brushing releasing agent;

3). top box moulding, adjustment sandbox is also put well, starts moulding after placing muscle of codding,

Back-up sand hole, a few place is respectively done, then back-up sand mould to be covered at core print place;

4) nowel moulding, arranges running channel by technological requirement, and all porcelain tube interface adhesive tapes are wound around and cement, and put alignment pin, adjustment sandbox mold thickness, and all the other are with top box moulding, wait for the demoulding;

5) coremaking, hangs in core box by arbor, closes core box, tight with F kayser, is fixed by arbor, erect core box with galvanized wire, loads quartz sand;

6). finishing, repair die cavity and loam core, damaged and cracks will be repaired, clean with dust catcher process, to die cavity and loam core swabbing;

7). fall core, and cleaning nowel, makes loam core steadily fall into; If any defect, repair defect place, and swabbing is dried; In clearance back-up sand, and check core print;

8). mould assembling, falls into alignment pin, and die joint asbestos yarn seals, and by mould assembling after top box upset, notes checking adjustment; Sandbox surrounding should be welded, and nowel is connected as a single entity; From top box back-up sand hole back-up sand, real striking off of pounding, becomes molding box;

(2) pour into a mould:

1). check that whether Rolling device each position part is fastening, normal operation; Confirm errorless after will roll case place horizontal level;

2). molding box prepares and installs

Ready molding box is fixed in rolling case (4); With clamp, molding box is positioned, more fixing by pressing plate entirety;

3). molten steel prepares

Notice tapping after sandbox is ready to, ensure that liquid steel temperature, chemical composition, ferrite content meet technological requirement, molten steel flows into molten bath from cast gate;

4). cast

Start braking motor (9), by the effect of reductor (8) and shaft coupling (7), rolling case (4) is made to carry out clockwise 90 ° of rotations, now, molten steel injects die cavity with uniform flow velocity from molten bath, when the case (4) that rolls clockwise 90 ° move to appropriate location time touch travel switch (13), casting complete;

5). solidification of molten steel

Make rolling case (4) keep contacting with travel switch (13), solidify according to the process time;

6). the demoulding

After unloading lower platen, start and reversely rotate switch, make the counterclockwise 180 ° of rotations of rolling case (4); When the case (4) that rolls rotates to travel switch (13) position, foundry goods Automatic-falling; Touch travel switch (13) simultaneously, braking motor (9) is stopped operating;

7). cleaning

Keep clean in rolling case (4), then start casting device, make rolling case (4) place horizontal level, wait for cast next time.

2. the processing method of a kind of casting device that rolls according to claim 1, is characterized in that: rolling case (4) described in second largest bar step 5) keeps being 1.5 times of process time with travel switch (13) time of contact.