CN212822570U

CN212822570U - Improvement device of tectorial membrane sand cold iron face

Info

Publication number: CN212822570U
Application number: CN202020800880.1U
Authority: CN
Inventors: 陈友三; 陈常彬; 王金辉; 李爱东; 霍金城; 聂绍杰
Original assignee: Tianjin Dashiang Precision Industrial Co ltd
Current assignee: Tianjin Dashiang Precision Industrial Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-03-30
Anticipated expiration: 2030-05-14

Abstract

An improved apparatus for precoated sand cooling iron surface, comprising: the upper sand core, the lower sand core and the chill are matched and used for casting a casting; wherein, the upper sand core and the lower sand core are assembled into an integral sand core box; the upper sand core is of a square structure, and a groove which is the same as the casting is arranged in the upper sand core; the cold iron is coated with a coating, and the coating is alkyd varnish. The utility model can not only avoid the adhesion of the chiller, and ensure that the chilling surface of the chiller is not easy to generate air holes and casting scrap caused by slag holes, thereby greatly improving the service life and chilling effect of the chiller; moreover, the investment of equipment and personnel for heating and drying after the sand core is brushed can be effectively avoided by correctly controlling the brushing time of the cold iron surface varnish; meanwhile, the shell making process is simplified in many aspects, and the aim of saving the manufacturing cost of the coated sand core is further fulfilled.

Description

Improvement device of tectorial membrane sand cold iron face

Technical Field

The utility model belongs to the machinery casting field especially relates to improvement device of tectorial membrane sand cold iron face.

Background

The casting gating system generally comprises a sprue, a cross gate, an ingate, a riser, a casting and the like.

At present, with the development of the times, casting is taken as a metal hot working process which is relatively earlier mastered by human beings, and the yield is continuously improved while the high-quality development is pursued, namely: the riser would be replaced by a chill in the casting gating system. However, for high alloy iron castings, due to the high casting temperature, the molten iron directly conducts heat to the chiller, so that the chiller surface slightly melts and bites into the casting, namely: the cold iron adhesion phenomenon occurs, and therefore, the casting is easily scrapped.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve device of tectorial membrane sand chill face to solve the technical problem of chill adhesion.

In order to achieve the above purpose, the utility model discloses an improvement device of tectorial membrane sand cold iron face's concrete technical scheme as follows:

an improved apparatus for precoated sand cooling iron surface, comprising: the upper sand core and the lower sand core are matched and used for casting a casting, the chilling block is arranged in the lower sand core, and the casting is poured in the upper sand core; wherein, the upper sand core and the lower sand core are assembled into an integral sand core box; the cold iron is coated with a coating, and the coating is alkyd varnish.

Further, the thickness of the coating is: 0.08-0.15 mm; and the paint is coated on the parts of chilling parts of the chilling blocks which are easily overheated or slowly radiated and the sand cores at the periphery of the chilling blocks.

Furthermore, the upper sand core is of a square structure, and a groove which is the same as the casting is formed in the upper sand core.

Furthermore, the lower sand core is of a square structure with the same size as the upper sand core, and a groove which is the same as the casting is formed in the lower sand core.

Further, the casting is suitable for the material of high-temperature-resistant high-nickel cast iron.

Further, the chilling block is of a driving type.

The utility model discloses an improvement device of tectorial membrane sand cold iron face has following advantage:

the utility model has simple structure and convenient operation; not only can avoid the adhesion of the chilling block, but also can ensure that the chilling surface of the chilling block is not easy to generate casting scrap caused by air holes and slag holes, and greatly improve the service life and chilling effect of the chilling block; moreover, the investment of equipment and personnel for heating and drying after the sand core is brushed can be effectively avoided by correctly controlling the brushing time of the cold iron surface varnish; meanwhile, the shell making process is simplified in many aspects, and the aim of saving the manufacturing cost of the coated sand core is further fulfilled.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The notation in the figure is:

1. a sand core is arranged; 11. setting a sand core; 2. performing cold iron; 3. casting; 4. and (4) coating.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.

As shown in fig. 1, the utility model comprises: the sand core comprises an upper sand core 1, a lower sand core 11, a chilling block 2 arranged in the lower sand core 11 and a casting 3 poured in the upper sand core 1, wherein the upper sand core 1 and the lower sand core 11 are matched; wherein, the upper sand core 1 and the lower sand core 11 are tools for casting a cast 3, and are combined into an integral sand core box; the coating 4 is coated on the part of the chilling block 2 which is easy to overheat or has slow heat dissipation by adopting a brush coating mode, and the coating 4 is alkyd varnish.

The thickness of the coating 4 is: 0.08-0.15 mm; and the paint is coated on the parts of the chilling blocks 2 which are easy to overheat or have slow heat dissipation and the sand cores around the chilling blocks 2.

The coating 4 is brushed after the sand core is taken out by being driven into a hot core box of the cold iron 2 and the temperature is reduced to 70-90 ℃.

The upper sand core 1 is of a square structure, and a groove which is the same as the casting is arranged in the upper sand core 1.

The lower sand core 11 is of a square structure with the same size as the upper sand core 1, and a groove which is the same as the casting is formed in the lower sand core 11.

The casting 3 is suitable for high-temperature-resistant high-nickel cast iron.

The chill 2 needs to be in close contact with the casting; before brushing, blowing the sand coating and floating sand on the surface of the chilling block 2; and after the coating 4 is uniformly coated, the coating can be downwards buckled, so that floating sand adhesion before drying is avoided.

The chill 2 is of a driving type.

When in use, the following steps are adopted:

the first step is as follows: taking a proper amount of alkyd varnish, putting the alkyd varnish into a container of 100-200ml, and slightly and uniformly stirring the alkyd varnish for later use;

the second step is that: preparing 1 count of each of 1/2 inches and 1 inch clean pappus brushes for standby;

the third step: and taking out the whole sand core which is combined with the mould from the hot core box, scraping off burrs at the cold iron 2 part and the periphery, blowing off floating sand, cooling for 2-3 minutes, immediately dipping a proper amount of varnish by a brush when the temperature of the cold iron 2 is reduced to 70-90 ℃, uniformly brushing the surface of the cold iron 2 and the sand core at the periphery of the cold iron 2, fastening downwards, stacking on a tray, and naturally drying.

The fourth step: after the brushing operation is interrupted and ended, the varnish container is immediately covered with a cover to reduce volatilization of the paint.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides an improvement device of tectorial membrane sand cold iron face which characterized in that includes: the upper sand core, the lower sand core and the chill are matched and used for casting a casting; wherein, the upper sand core and the lower sand core are assembled into an integral sand core box; the upper sand core is of a square structure, and a groove which is the same as the casting is arranged in the upper sand core; the cold iron is coated with a coating, and the coating is alkyd varnish.

2. The apparatus of claim 1, wherein the coating has a thickness of: 0.08-0.15 mm; and the paint is coated on the parts of chilling parts of the chilling blocks which are easily overheated or slowly radiated and the sand cores at the periphery of the chilling blocks.

3. The apparatus for improving the cold iron surface of precoated sand according to claim 1, wherein the lower sand core has a square structure with the same size as the upper sand core, and a groove identical to the casting is arranged in the lower sand core.

4. The apparatus of claim 1, wherein the casting is adapted to the material of high-nickel cast iron with high temperature resistance.

5. The apparatus of claim 1, wherein the chiller is of the punch-in type.