CN202606800U - Leakage-proof riser - Google Patents

Abstract

The utility model discloses a leakage-proof riser, the bottom surface of which is a plane, meanwhile, the tail end of the leakage-proof riser is provided with a conical transition surface. When the leakage-proof riser provided by the utility model is used, the end face of a riser hole formed by precoated sand is machined into a conical surface with the same circular conical surface semiapex angle as the conical transition surface, the leakage-proof riser is inserted into the riser hole, the conical transition surface and the end face of the riser hole are jointed together to form conical surface cooperation, as long as a force is slightly pressed downwards, the conical transition surface and the conical surface can be locked together, therefore, the riser is avoided floating in a casting process; and meanwhile, the bottom surface of the leakage-proof riser is the plane, the bottom surface is only in contact with a working platform when the leakage-proof riser is vertically stored, therefore the bottom surface is only abraded, as long as the abraded part does not extend to the conical transition surface, molten steel cannot overflow from a joining surface of the precoated sand and the leakage-proof riser. The leakage-proof riser provided by the utility model solves the problem of iron type damage caused by molten steel leakage.

Description

A kind of leakproof rising head

Technical field

The utility model relates to casting technology field, more particularly, relates to a kind of leakproof rising head.

Background technology

Iron Mould Coated Sand casting is in metal mold (being called swage) inner chamber, to be covered with the skim molding sand and a kind of casting technique of forming casting mold.Iron Mould Coated Sand has metal mold and shell-molded characteristics concurrently, casting quality is improved with quantity scrapped greatly significantly reduce; Because the Iron Mould Coated Sand mold stiffness is very high, thereby the dimensional accuracy and the compactness of foundry goods have been significantly improved.

In the process of Iron Mould Coated Sand casting; Rising head all is to be installed in addition on the swage, and is as shown in Figure 1, and last swage 02 surrounds forming cavity with following swage 03 consistency from top to bottom; Cover be laid in forming cavity surface of layer of sand 04 and form precoated sand, rising head 01 is installed on emitting in the oral pore of precoated sand top.

In process of production, can produce phenomenon such as collide with to swage unavoidably, so the oral pore that emits of rising head 01 and last swage 02 is designed to matched in clearance, the end face A of rising head 01 and the end face B that is made up of precoated sand fit naturally.In the process that rising head is installed on the swage; If end face B goes up the long-pending sand that existence is not cleaned out; It is not in place to cause rising head 01 to be installed, and it is not tight that end face A contacts with end face B, makes that rising head 01 can be to come-up when casting; And then molten steel overflows from the interface of precoated sand and rising head 01, produces the excessive phenomenon of molten steel and damages swage; Simultaneously, when the end face A of rising head 01 has some small gaps, just must scrap, otherwise also can occur because contacting of end face A and end face B closely do not cause the excessive and phenomenon of damaging swage of molten steel.

By the above, how a kind of novel rising head is provided, to be easy to generate molten steel excessive and the problem of damage swage becomes the technical problem that those skilled in the art need solution badly to solve existing rising head.

The utility model content

In view of this, the utility model is provided for the leakproof rising head of Iron Mould Coated Sand casting, to solve that existing rising head is easy to generate the excessive phenomenon of molten steel and the problem of damaging swage.

For realizing above-mentioned purpose, the utility model provides following technical scheme:

A kind of leakproof rising head is applied in the swage casting process, and the bottom surface of leakproof rising head is the plane, and the end of leakproof rising head is provided with the tapering transition face.

Preferably, in above-mentioned leakproof rising head, the taper seat semiapex angle of tapering transition face is 6 degree-15 degree.

Preferably, in above-mentioned leakproof rising head, the taper seat semiapex angle of tapering transition face is 6 degree.

Preferably, in above-mentioned leakproof rising head, the taper seat semiapex angle of tapering transition face is 9 degree.

Preferably, in above-mentioned leakproof rising head, the taper seat semiapex angle of tapering transition face is 12 degree.

Preferably, in above-mentioned leakproof rising head, the taper seat semiapex angle of tapering transition face is 15 degree.

Its bottom surface of leakproof rising head that the utility model provided is the plane, and simultaneously, the end of leakproof rising head is provided with the tapering transition face.

When using the leakproof rising head that the utility model provided, as shown in Figures 2 and 3, will be processed into the conical surface that has identical taper seat semiapex angle with tapering transition face D by the rising head hole end surface C that precoated sand constitutes.After emitting the insertion of leakproof rising head in the oral pore; Tapering transition face D and the rising head hole end surface C formation cone match that fits together; When the leakproof rising head is installed, only need be slightly downwards with defeating, two conical surfaces will tightly lock together; Thereby avoid rising head in casting cycle, to float, and then avoided molten steel to overflow the problem that causes damaging swage from the interface of precoated sand and leakproof rising head; Simultaneously, consider in the use of leakproof rising head and can vertically be placed on the workbench, cause the end of leakproof rising head to be worn easily; Therefore the bottom surface A that keeps rising head is the plane, like this, and when the leakproof rising head is placed on the workbench; Bottom surface A taking up wear; As long as wearing part does not extend to tapering transition face D, molten steel just can't overflow from the interface of precoated sand and leakproof rising head, thus the problem of having avoided the invar leaked water to cause damaging swage.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the assembling sketch map of rising head in the prior art;

The structural representation of the leakproof rising head that Fig. 2 is provided for the utility model embodiment;

The assembling sketch map of the leakproof rising head that Fig. 3 is provided for the utility model embodiment.

The specific embodiment

The utility model embodiment discloses a kind of leakproof rising head that is used for Iron Mould Coated Sand casting, to solve that existing rising head is easy to generate the excessive phenomenon of molten steel and the problem of damaging swage.

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

As shown in Figure 2, its bottom surface of leakproof rising head A that the utility model provided is the plane, and simultaneously, the end of leakproof rising head is provided with tapering transition face D.

When using the leakproof rising head 1 that the utility model provided, please refer to Fig. 3, the rising head hole end surface C that is made up of precoated sand 2 is processed to have with tapering transition face D the conical surface of identical taper seat semiapex angle.After emitting 1 insertion of leakproof rising head in the oral pore; Tapering transition face D and the rising head hole end surface C formation cone match that fits together; When leakproof rising head 1 is installed, only need be slightly downwards with defeating, two conical surfaces will tightly lock together; Thereby avoid the leakproof rising head 1 in casting cycle, to float, and then avoided molten steel to overflow the problem that causes damaging swage from the interface of precoated sand 2 and leakproof rising head 1; Simultaneously, consider in the use of leakproof rising head 1 and can vertically be placed on the workbench, cause the end of leakproof rising head 1 to be worn easily; Therefore the bottom surface A that keeps rising head is the plane, like this, and when leakproof rising head 1 vertically is placed on the workbench; Bottom surface A taking up wear; As long as wearing part does not extend to tapering transition face D, molten steel just can't overflow from the interface of precoated sand and leakproof rising head, thus the problem of having avoided the invar leaked water to cause damaging swage.

Concrete, in the leakproof rising head 1 that the foregoing description provided, the taper seat semiapex angle of tapering transition face D place part is 6 degree-15 degree, preferably, this taper seat semiapex angle is 6 degree, 9 degree, 12 degree or 15 degree.It will be appreciated by persons skilled in the art that taper seat semiapex angle scope that the foregoing description provides and numerical value preference data, but in actual production process, can also this taper seat semiapex angle be set to other angle for obtaining through practice.

Further, in the leakproof rising head that the foregoing description provided, leave the gap of 0.5mm to 1.5mm between rising head hole end surface B and the bottom surface A.The gap that keeps can make when pressing down the process of leakproof rising head 1, and two taper surfaces fully contact and locked, avoids causing two taper surfaces to fit because of bottom surface A and rising head hole end surface B at first come in contact.

Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims (6)

1. a leakproof rising head is applied in the swage casting process, and the bottom surface of said leakproof rising head is the plane, it is characterized in that, the end of said leakproof rising head is provided with the tapering transition face.

2. leakproof rising head according to claim 1 is characterized in that, the taper seat semiapex angle of said tapering transition face is 6 degree-15 degree.

3. leakproof rising head according to claim 2 is characterized in that, the taper seat semiapex angle of said tapering transition face is 6 degree.

4. leakproof rising head according to claim 2 is characterized in that, the taper seat semiapex angle of said tapering transition face is 9 degree.

5. leakproof rising head according to claim 2 is characterized in that, the taper seat semiapex angle of said tapering transition face is 12 degree.

6. leakproof rising head according to claim 2 is characterized in that, the taper seat semiapex angle of said tapering transition face is 15 degree.

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