CN201632637U - Fan-shaped slope buffering sprue cup for casting - Google Patents
Fan-shaped slope buffering sprue cup for casting Download PDFInfo
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- CN201632637U CN201632637U CN2010201550487U CN201020155048U CN201632637U CN 201632637 U CN201632637 U CN 201632637U CN 2010201550487 U CN2010201550487 U CN 2010201550487U CN 201020155048 U CN201020155048 U CN 201020155048U CN 201632637 U CN201632637 U CN 201632637U
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Abstract
The utility model relates to a fan-shaped slope buffering sprue cup for casting. The sprue cup comprises a sprue cup body, a fan-shaped liquid bath is arranged on the sprue cup body, the bottom surface of the liquid bath is a slope, the highest point of the bottom surface lies in the large diameter end of the liquid bath, and the lowest point lies in the small diameter end of the liquid bath. A direct sprue vertically cut through downward is arranged at the small diameter point of the liquid bath. The fan-shaped slope buffering sprue cup is made from novel silicon carbide refractory materials by mechanical pressing and then by high temperature sintering. The refractoriness can reach more than 700 DEG, and the service life is long. The sprue cup is used for grinding ball (grinding section) sand mould casting. Casting defects, such as pores, air shots, cold shots, sand burning, etc can be obviously overcome, and the rate of graded products can reach more than 97%.
Description
Technical field
The utility model belongs to the cast gate that is used to cast, and is specifically related to be used for the cup of wear-resistant medium foundry goods casting.
Background technology
The effect of cup is that liquid metal is imported the mold cavity mouth.The cup of small-sized foundry goods mostly is an infundibulate, and the cup of medium-sized or above foundry goods often is a basin shape, and the foundry goods that quality requirement is high also will be installed collection slag devices such as filter in cup.If cup design or select for use unreasonable, just may make casting flaws such as foundry goods generation pore, trachoma, splashings, slag blister, shrinkage cavity, crackle and misrun.Therefore, the structure of correct selection cup and size and reasonably arrangement on casting mold are one of key factors that improves casting product quality, reduction casting wasted product rate.
Cast grinding ball (mill section) as a kind of abrasive media, is widely used in the powder technology of industries such as building material cement, mine metallurgy, energy thermoelectricity, nonmetal processing, water-coal-slurry and magnetic material.Owing to need satisfy the requirement of every profession and trade distinct device, different working conditions, specification also from
Arrive
Even larger diameter.At present, the most abrading-balls of China (mill section) manufacturing enterprise still adopts ordinary sand casting for reducing cost, the also most clay of simple type or sprue cup cups that common refractory is made of using.The reason of using the sprue cup cup to produce whirlpool is when the direct hopper shape of molten metal cup, and each is to flow and unbalanced, and certain flow direction of first-class strand departs from the cup center, will form horizontal eddy current.According to hydraulic principle, horizontal eddy current is lower near centre pressure, and liquid level is lower, the dregs that float over like this on the liquid level can be along the liquid level of bending, the one side rotation, one side and air together enter sprue, will form casting flaws such as oxide slag inclusion, pore.Simultaneously, when using the sprue cup cup, molten metal can directly wash away mold at a high speed, causes casting flaws such as splashings, scab, slag blister, shrinkage cavity, crackle and misrun.Therefore this sprue cup cup is only applicable to the small-sized low side foundry goods to less demanding sand casting of pushing off the slag and permanent mold casting, far can not satisfy the demand of domestic and international market to high-quality abrading-ball, mill section.
The utility model content
In order to solve the defective that exists in the use of sprue cup cup, the utility model provides a kind of Flabelliform-slope buffered sprue cup for casting.
Concrete structural design scheme is such:
Flabelliform-slope buffered sprue cup for casting comprises the cup cup, and described cup cup is provided with fan-shaped liquid-bath, and the bottom surface of liquid-bath is domatic, and the highest point of bottom surface is positioned at the larger diameter end of liquid-bath, and lowest part is positioned at the smaller diameter end of liquid-bath; The minor diameter place of liquid-bath is provided with the down gate that connects vertically downward.
The big end radius of described fan-shaped liquid-bath is the 80-150 millimeter, and the small end radius is the 15-80 millimeter, and the centre-to-centre spacing between the two ends is the 150-200 millimeter, and its degree of depth is the 80-120 millimeter; Its bottom surface gradient is the 2-15 degree; The down gate diameter is the 30-60 millimeter.
Described cup cup material is a Tercod.
The utility model thoroughly overcomes the deficiency of sprue cup cup according to the characteristics of hydraulic principle and wear resistance castings pouring technology in the mode of buffering indirect casting.Concrete useful technique effect embodies in the following areas:
1, the utility model Flabelliform-slope buffered sprue cup adopts the novel silicon carbide refractory material, and through mechanical pressing, and then through high temperature sintering, its refractoriness can be up to more than 1700 ℃.The novel silicon carbide refractory material possesses the anti-slagging of retractory, slows down the formation of reaction metamorphic layer; The intensity height, anti-washing away; Heat-resisting shake, the opposing thermal shocking; Thermoplasticity is good under the high temperature, buffering thermal stress, few dry slag, characteristics such as long service life.
2, the utility model is fixed on the mold top behind the inwall brush cast paint in use, and the cast gate on its down gate and the mold matches.Molten metal injects the covering of the fan end of fan-shaped liquid-bath during casting, because of the covering of the fan end of accepting from the casting ladle molten metal is an inverted cone surface, can effectively prevent splashing and overflowing of molten metal.The molten metal of liquid-bath also forms metal bath surface in the pond when flowing to down gate, flow into down gate again after making the poring rate of molten metal reach suitable size.The metal liquid degree of depth in the cup liquid-bath increases like this, can stop the formation of the horizontal vortex of vertical axis rotation, thereby help separating dregs and bubble, effectively avoids the generation of defectives such as pore, shrinkage cavity, slag blister, crackle and misrun.
3, the utility model makes the kinetic energy major part that falls from the metal liquid stream of casting ladle be absorbed by fan-shaped liquid-bath inner metal liquid and changes the pressure energy into, can be converted into horizontal velocity by pressure again and flow to down gate, thereby alleviated washing away to down gate bottom casting mold, further reduce casting flaws such as splashings, scab, significantly reduced the casting wasted product rate, thereby improved casting product quality, the percentage of A-class goods can reach more than 97%.
Description of drawings
Fig. 1 is the A-A cutaway view of the utility model structure,
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done to describe further by embodiment.
Embodiment 1:
Referring to Fig. 1 and Fig. 2, be used for producing
The Flabelliform-slope buffered sprue cup of wear-resisting ball comprises cup cup 1, and cup cup material is a Tercod.Cup cup 1 is provided with fan-shaped liquid-bath 2, and the bottom surface 3 of liquid-bath is domatic, and the highest point of bottom surface is positioned at the larger diameter end of liquid-bath, and lowest part is positioned at the smaller diameter end of liquid-bath; The minor diameter place of liquid-bath 2 is provided with the down gate 4 that connects vertically downward.
The big end radius of fan-shaped liquid-bath 2 is 85 millimeters, and the small end radius is 15 millimeters, and the centre-to-centre spacing between the two ends is 157 millimeters, and its degree of depth is 80 millimeters; Its bottom surface gradient α is 2.5 degree; The down gate diameter is 30 millimeters.Its monnolithic case is of a size of 310 * 220 * 160 (millimeters).
Embodiment 2:
Be used for producing
The Flabelliform-slope buffered sprue cup of wear-resisting ball, the big end radius of its liquid-bath 2 is 120 millimeters, and the small end radius is 25 millimeters, and the centre-to-centre spacing between the two ends is 180 millimeters, and its degree of depth is 100 millimeters; Its bottom surface gradient α is 15 degree; The down gate diameter is 50 millimeters.
Other is with embodiment 1.
Claims (3)
1. Flabelliform-slope buffered sprue cup for casting, comprise the cup cup, it is characterized in that: described cup cup is provided with fan-shaped liquid-bath, and the bottom surface of liquid-bath is domatic, and the highest point of bottom surface is positioned at the larger diameter end of liquid-bath, and lowest part is positioned at the smaller diameter end of liquid-bath; The minor diameter place of liquid-bath is provided with the down gate that connects vertically downward.
2. Flabelliform-slope buffered sprue cup for casting according to claim 1, it is characterized in that: the big end radius of described fan-shaped liquid-bath is the 80-150 millimeter, the small end radius is the 15-80 millimeter, and the centre-to-centre spacing between the two ends is the 150-200 millimeter, and its degree of depth is the 80-120 millimeter; Its bottom surface gradient is the 2-15 degree; The down gate diameter is the 30-60 millimeter.
3. Flabelliform-slope buffered sprue cup for casting according to claim 1 is characterized in that: described cup cup material is a Tercod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010201550487U CN201632637U (en) | 2010-04-08 | 2010-04-08 | Fan-shaped slope buffering sprue cup for casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201550487U CN201632637U (en) | 2010-04-08 | 2010-04-08 | Fan-shaped slope buffering sprue cup for casting |
Publications (1)
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CN201632637U true CN201632637U (en) | 2010-11-17 |
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ID=43077112
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Application Number | Title | Priority Date | Filing Date |
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CN2010201550487U Expired - Lifetime CN201632637U (en) | 2010-04-08 | 2010-04-08 | Fan-shaped slope buffering sprue cup for casting |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101791694A (en) * | 2010-04-08 | 2010-08-04 | 安徽省凤形耐磨材料股份有限公司 | Flabelliform-slope buffered sprue cup for casting |
-
2010
- 2010-04-08 CN CN2010201550487U patent/CN201632637U/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101791694A (en) * | 2010-04-08 | 2010-08-04 | 安徽省凤形耐磨材料股份有限公司 | Flabelliform-slope buffered sprue cup for casting |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20101117 |
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CX01 | Expiry of patent term |