CN2671718Y - Large steel ingot mold riser - Google Patents

Large steel ingot mold riser Download PDF

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Publication number
CN2671718Y
CN2671718Y CN 03232433 CN03232433U CN2671718Y CN 2671718 Y CN2671718 Y CN 2671718Y CN 03232433 CN03232433 CN 03232433 CN 03232433 U CN03232433 U CN 03232433U CN 2671718 Y CN2671718 Y CN 2671718Y
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CN
China
Prior art keywords
shell
heat
cap mouth
insulating shield
cap
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Expired - Fee Related
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CN 03232433
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Chinese (zh)
Inventor
侴广溪
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Shanghai No5 Iron And Steel Co Ltd Baoshan Iron And Steel Group
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Shanghai No5 Iron And Steel Co Ltd Baoshan Iron And Steel Group
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Priority to CN 03232433 priority Critical patent/CN2671718Y/en
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Publication of CN2671718Y publication Critical patent/CN2671718Y/en
Anticipated expiration legal-status Critical
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Abstract

It is large steel ingot mold riser used for the die-casting in the metallurgy industry. The utility model is characterized in that a cap port matching to the size of the ingot body is an 'outer shell + inner liner'typed double-layer structure; the internal wall (thickness 60 mm) of the foundry pig outer shell is a 'big end up and reverse circular truncated cone. ' The coning of the big end up and reverse circular truncated cone is 6%. The outer wall of the outshell is provided with 2 sling handles uniformly. The inner liner composed by 4 pieces of firewalls (the minimum thickness is 60 mm) is a reverse-circular-runcated-cone-shaped ring column. The firewalls contact in cell snaps. The outer surface matches to the internal wall of the outer shell. The inner surface which forms a 92 DEG included angle with the horizontal surface is a cylinder whose back cut is smaller than its undercut. When die-casting, the molten steel passes through a water inlet, a central casting pipe and the bottom part of the steel ingot mould entering the cap port in safety. The water inlet and the central casting pipe are at the bottom of the ladle. The heat preservation effect and the quality of the steel ingot metallurgy are good. The utility model has advantages of reasonable design, easy use, and high dependability. It solves problems such as: the inner liner firewalls are difficult to assemble; the firewalls are easy to float off; boards are easy to fall. Comparing to the traditional shaped large steel ingot mold riser, the blank forming rate improved more than 5% and the production requirements of the steel manufacturers are satisfied.

Description

Large ingot mould cap mouth
Technical field
The utility model relates to the equipment of metallurgy industry molten steel casting, refers in particular to the ingot mould that is used for the molten steel die casting.
Background technology
The casting of molten steel is the indispensable flow process of metallurgy industry steelshop.Molten steel casting divides die casting and continuous casting dual mode: the molten steel continuous casting has the high advantage of recovery rate of iron, and high but factory building, equipment require, investment is big; Though the recovery rate of iron of molten steel die casting is lower, factory building, equipment require low, so have the little advantage of investment, the high-quality steel grade of part and most of forging are not suitable for the molten steel continuous casting in addition.Therefore, die casting remains the indispensable mode of iron and steel metallurgical industry molten steel casting flow process.
Ingot mould is the indispensable equipment of molten steel die casting, comprises cap mouth, ingot body, chassis.During the molten steel die casting, with the cap mouth of ingot body coupling, place the top of ingot body, the insulation and the molten steel that are used for molten steel shrink, and reduce the steel ingot shrinkage cavity, improve the steel ingot billet yield.Ingot mould cap mouth by foundry iron shell and refractory lining are formed on structure, mainly contains two kinds: (1) foundry iron shell---the refractory brick of directly building by laying bricks or stones at present; Fire-resistant refractory material+the heat-insulating shield of (2) foundry iron shell---one-piece casting.The two common ground is that cap mouth (foundry iron shell) shape substantially all is that (this is because early stage cap mouth liner all adopts refractory brick directly to build by laying bricks or stones to up-small and down-big truncated conical shape, shell with up-small and down-big truncated conical shape turns around in other words, directly build refractory brick by laying bricks or stones, it is also laborsaving to save time); Difference is that refractory material, the structure of cap mouth liner 1 is different.
From result of use, there is following deficiency in the former (see figure 5): during use, refractory brick directly is subjected to the high-temperature molten steel etch, every stove is all wanted loss one deck, and the cap mouth uses later stage, liner 1 refractory brick attenuation, it is big that cap mouth internal diameter becomes, and the molten steel heat insulation effect descends, and influences ingot quality; Because firebrick loss is big, cause the cap mouth short service life, and build new brick again by laying bricks or stones, waste and add that stoving time is longer very greatly, the turnover that influences ingot mould is sometimes used, and brings very big influence for the smooth arrangement of production.
Latter's (see figure 6) is the former improvement, because liner 1 is a double-decker, has high insulating effect with the heat-insulating shield that high-temperature molten steel directly contacts, cheap advantage, the fire-resistant refractory material one-piece casting interlayer of being close to foundry iron shell 2 is subjected to the protection of heat-insulating shield internal layer, prolonged cap mouth service life, but have following deficiency: the internal layer of being made up of the polylith heat-insulating shield is when assembling, should prevent that board falling from preventing that again molten steel rises heat-insulating shield behind the cap mouth from floating, the rod iron that need pressurize on the cap mouth can be pushed down heat-insulating shield and add timber wedge again between plate and plate simultaneously, makes firmly contact between plate and the plate; Secondly be plane contact between the heat-insulating shield, it is bigger to leave the slit, molten steel easily sees through the refractory material interlayer of heat-insulating shield contact liner 1, makes the inner lining material loss, and it is big that cap degree of lip-rounding shape changes, becomes, influence heat insulation effect, billet yield reduces, and needs often to build refractory lining simultaneously, also needs high-temperature baking, complex process, operation is various; Even more serious in addition is, be subjected to the restriction of " up-small and down-big truncated conical shape " cap degree of lip-rounding shape, heat-insulating shield thickness is relatively thinner, and (heat-insulating shield thickness is greater than 40mm, heat-insulating shield is fallen in the interior molten steel of ingot mould easily, influence the quality of steel), so in the design of large ingot mould (steel ingot weight is greater than 6 tons), for insulation and the molten steel that guarantees molten steel shrinks, can only increase the height of cap mouth, make cap volume ratio (whole steel ingot weight of cap mouth molten steel weight ÷) bigger (generally about 18%), cause the steel ingot billet yield lower, the adverse consequences that iron and steel finished product manufacturing cost is high.
Summary of the invention
The utility model designs a kind of large ingot mould cap mouth, it is a kind of breakthrough to the design of conventional steel ingot mould cap mouth, it adopts " metal shell of up big and down small reverse frustoconic shape " and " reverse frustoconic heat-insulating shield liner " design, solved that large ingot mould cap volume ratio (generally about 18%) is big, liner heat-insulating shield assembling difficulty, cap mouth heat-insulating shield are easily floated, the problem of board falling, improve the metallurgical quality of large-scale steel ingot (steel ingot weight is greater than 6 tons), reduce manufacturing cost, satisfied the production requirement of steelmaker.
A kind of large ingot mould cap mouth that the utility model provides comprises foundry iron shell, refractory lining, it is characterized in that: the cap mouth that mates with ingot mould ingot body size is the double-decker of " foundry iron shell 2+ heat-insulating shield liner 1 "; Foundry iron shell 2 is " up big and down small reverse frustoconic shape ", thickness is 50~70mm, the inwall of shell 2 is the hollow round platforms of " up big and down small ", (tapering should not be too big for ÷ H=2%~7% of tapering α=(D-d), the top thickness of heat-insulating shield is increased, cause the waste of heat-insulating shield material), vertically vertical section is an isosceles trapezoid (the heat-insulating shield liner 1 that guarantees internal layer is not fallen in the molten steel), D is cap mouth shell 2 inwall top diameters, d is cap mouth shell 2 inwall base diameters, and H is the cap open height; The refractory lining 1 that is " reverse frustoconic central column " is made up of 2~5 blocks of heat-insulating shields, the inner surface that contacts with molten steel is " the cylindrical of end opening that is slightly less than suitable for reading ", the contraction of molten steel ° (is convenient to like this in inner surface and horizontal plane angle β=90~95, less than 90 ° molten steel is shunk and be subjected to resistance), the outer surface that contacts with shell 2 is " reverse frustoconic ", size and shell 2 inwalls are complementary, and (making between the heat-insulating shield can auto lock, heat-insulating shield can fall, just make firmly contact between plate and the plate after nailing on timber wedge, can prevent that heat-insulating shield from floating behind the cap mouth in molten steel rises); 2~4 metals hang handle 3 and are evenly arranged in the outer wall (convenient driving places the cap mouth on the top of ingot mould ingot body) of shell 2 along concentric circles, and are above-mentioned in conjunction with constituting the utility model.
The minimum thickness b=55mm of cap mouth heat-insulating shield liner 1, b is too thin, and the heat insulation effect of molten steel is poor, and the cap open height of design is big, causes the cap volume ratio of cap mouth big, and the steel ingot billet yield is little; B is too thick, and the waste of heat-insulating shield material is big, the cost of manufacture height, and simultaneously, the heat-insulating shield own wt is also bigger, easily falls in the molten steel, influences ingot quality.
The refractory lining of forming by 2~5 blocks of heat-insulating shields 1, contacting between heat-insulating shield and the heat-insulating shield is the contact of primary and secondary button, that is to say, two limits about the monolithic heat-insulating shield, on one side be " cylindrical protrudes, interior circle recessed ", another side is " recessed, the interior boss of cylindrical goes out ", and two limits " recessed, protrusion " portion size coupling.Such design makes between plate and the plate, between plate and the cap mouth iron-clad, all formed tight contact between heat-insulating shield and the molten steel, improved heat insulation effect, has solved the problem of mouth board falling of ingot mould cap and kickboard.
Compared with prior art, the utlity model has following advantage:
(1) modern design, simple in structure;
(2) the heat-insulating shield assembling is easy, easy to use, the device reliability height;
(3) the ingot mould cap volume ratio descends, and billet yield is higher;
(4) be suitable for the structural design of relatively large ingot mould cap mouth.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the A-A generalized section of Fig. 1
Fig. 3 is the structural representation of monolithic heat-insulating shield
Fig. 4 is the B-B generalized section of Fig. 3
Fig. 5 is the structural representation of conventional steel ingot mould list liner cap mouth
Fig. 6 is the structural representation of the two single liner cap mouths of conventional steel ingot mould
Specific embodiments
Shanghai iron company steelshop, implement the molten steel die casting that the utility model is used for 13 tons of steel ingots: the cap mouth that mates with ingot mould ingot body size is the double-decker of " shell 2+ liner 1 ", and shell 2 is a foundry iron, and liner 1 is a heat-insulating shield; (thickness is 60mm to shell 2; Top diameter 970mm, base diameter 940mm) be " up big and down small reverse frustoconic shape ", inwall is one " a up big and down small rounding platform ", tapering α=6%, vertical vertical section of inwall are isosceles trapezoids; The refractory lining 1 that is " reverse frustoconic central column " is made up of 4 blocks of heat-insulating shields (contacting between heat-insulating shield minimum thickness 60mm, heat-insulating shield and the heat-insulating shield is the contact of primary and secondary button), the inner surface that contacts with molten steel is " the cylindrical of end opening that is slightly less than suitable for reading ", inner surface and horizontal plane angle β=92 °, be convenient to the contraction of molten steel, the outer surface that contacts with shell 2 is the reverse frustoconic that size and shell 2 inwalls are complementary; 2 are hung (convenient driving places the cap mouth on the top of ingot mould ingot body) on handle 3 is evenly arranged in shell 2 along concentric circles the outer wall.During molten steel die casting (method of making a bet), earlier the utility model is placed the ingot mould ingot body of size coupling, it is suitable for reading that molten steel pours into feed trumpet from the mouth of a river of ladle bottom then, flow into the ingot mould bottom from the feed trumpet bottom again, enter ingot mould all until the cap mouth from the ingot mould bottom at last, the heat-insulating shield liner 1 of internal layer can not float or fall into molten steel in molten steel rises behind the cap mouth, guaranteed product quality.Solved that large ingot mould cap volume ratio (generally about 18%) is big, liner heat-insulating shield assembling difficulty, cap mouth heat-insulating shield are easily floated, the problem of board falling.The utlity model has characteristics reasonable in design, simple in structure, that installation is easy, easy to use, the heat-insulating shield minimum thickness is bigger, and adopts tight contact of primary and secondary button, reliability height between heat-insulating shield and the heat-insulating shield, the molten steel high insulating effect has improved the steel ingot metallurgical quality; Simultaneously, the cap volume ratio of the large ingot mould cap mouth of design is suitable with the cap volume ratio of small size steel ingot mould cap mouth, and the cap volume ratio minimizing 6% than traditionally shaped large ingot mould cap mouth improves the steel ingot billet yield more than 5%, with 3000 yuan of calculating of annual production 30000 ton, ton steel benefits, can create every year and imitate 4,500,000 yuan.

Claims (3)

1, large ingot mould cap mouth comprises foundry iron shell, refractory lining, it is characterized in that: the cap mouth that mates with ingot mould ingot body size is the double-decker of foundry iron shell (2)+heat-insulating shield liner (1); The reverse frustoconic shape that foundry iron shell (2) is big up and small down, thickness is 50~70mm, the inwall of shell (2) is a up big and down small hollow round platform, ÷ H=2%~7% of tapering α=(D-d), vertically vertical section is an isosceles trapezoid, D is cap mouth shell (a 2) inwall top diameter, and d is cap mouth shell (a 2) inwall base diameter, and H is the cap open height; The refractory lining (1) that is the reverse frustoconic central column is made up of 2~5 blocks of heat-insulating shields, the inner surface that contacts with molten steel is the cylindrical of end opening that is slightly less than suitable for reading, inner surface and horizontal plane angle β=90~95 °, the outer surface that contacts with shell (2) is reverse frustoconic, and size and shell (2) inwall is complementary; 2~4 metals hang handle (3) and are evenly arranged on the outer wall of shell (2) along concentric circles.
2, large ingot mould cap mouth according to claim 1 is characterized in that: the minimum thickness b=55mm of cap mouth heat-insulating shield liner (1).
3, large ingot mould cap mouth according to claim 1 and 2, it is characterized in that: the heat-insulating shield of forming liner (1), two limits about its monolithic heat-insulating shield, be on one side " cylindrical protrudes, interior circle recessed ", another side is " recessed, the interior boss of cylindrical goes out ", and two limits " recessed, protrusion " portion size coupling.
CN 03232433 2003-06-24 2003-06-24 Large steel ingot mold riser Expired - Fee Related CN2671718Y (en)

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Application Number Priority Date Filing Date Title
CN 03232433 CN2671718Y (en) 2003-06-24 2003-06-24 Large steel ingot mold riser

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Application Number Priority Date Filing Date Title
CN 03232433 CN2671718Y (en) 2003-06-24 2003-06-24 Large steel ingot mold riser

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CN2671718Y true CN2671718Y (en) 2005-01-19

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101934335A (en) * 2010-08-20 2011-01-05 张家港市广大机械锻造有限公司 Forging method for forging
CN102266916A (en) * 2011-07-18 2011-12-07 中国科学院金属研究所 High-quality high-yield steel ingot preparing method
CN104249132A (en) * 2013-06-26 2014-12-31 江苏天工工模具钢工程技术研究中心有限公司 Steel ingot mould
CN107755649A (en) * 2017-09-19 2018-03-06 中冶宝钢技术服务有限公司 Mould and its processing method
CN111390127A (en) * 2020-04-22 2020-07-10 攀钢集团攀枝花钢铁研究院有限公司 Die casting cap port shell mounting structure and die casting pouring method
CN112808952A (en) * 2020-12-25 2021-05-18 中航上大高温合金材料有限公司 Improved heat insulation plate

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101934335A (en) * 2010-08-20 2011-01-05 张家港市广大机械锻造有限公司 Forging method for forging
CN102266916A (en) * 2011-07-18 2011-12-07 中国科学院金属研究所 High-quality high-yield steel ingot preparing method
CN104249132A (en) * 2013-06-26 2014-12-31 江苏天工工模具钢工程技术研究中心有限公司 Steel ingot mould
CN107755649A (en) * 2017-09-19 2018-03-06 中冶宝钢技术服务有限公司 Mould and its processing method
CN111390127A (en) * 2020-04-22 2020-07-10 攀钢集团攀枝花钢铁研究院有限公司 Die casting cap port shell mounting structure and die casting pouring method
CN111390127B (en) * 2020-04-22 2021-10-22 攀钢集团攀枝花钢铁研究院有限公司 Die casting cap port shell mounting structure and die casting pouring method
CN112808952A (en) * 2020-12-25 2021-05-18 中航上大高温合金材料有限公司 Improved heat insulation plate

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C19 Lapse of patent right due to non-payment of the annual fee
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