CN209849837U - DISA vertical green sand molding line cylinder mould - Google Patents
DISA vertical green sand molding line cylinder mould Download PDFInfo
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- CN209849837U CN209849837U CN201920630789.7U CN201920630789U CN209849837U CN 209849837 U CN209849837 U CN 209849837U CN 201920630789 U CN201920630789 U CN 201920630789U CN 209849837 U CN209849837 U CN 209849837U
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Abstract
The utility model discloses a perpendicular green sand molding line cylinder mould of DISA, including positive clamp plate, back pressure plate, crashproof post, locating pin cover, all be equipped with the runner cup on positive clamp plate and the back pressure plate, the end of cross gate is equipped with the cross gate rising head, all is equipped with a plurality of feeding rising heads on positive clamp plate and the back pressure plate, and feeding rising head lower part is equipped with erects to water, and positive clamp plate and back pressure plate erect and water the both sides and all be equipped with mould benevolence die cavity, and positive clamp plate erects to water the both ends and is equipped with the runner, and runner and positive clamp plate mould benevolence die cavity level intercommunication, positive clamp plate mould benevolence die cavity top are equipped. The utility model provides a foundry goods shrinkage cavity, shrinkage porosity and lightening hole fleshiness, clay scheduling problem, make foundry goods yield, technology yield improve greatly, satisfied the mass production demand.
Description
Technical Field
The invention belongs to the technical field of precision casting, and particularly relates to a DISA vertical green sand molding line B096 cylinder mold.
Background
At present, an air cylinder is one of main matched components of an air conditioner compressor, the performance of the air cylinder determines the performance quality of the whole air conditioner compressor to a great extent, and a B096 air cylinder is one of three main key castings of the air conditioner compressor.
The B096 cylinder casting is a solid part made of HT200, and the maximum wall thickness is about 38 mm; the original process is a mode of producing green sand by a vertical moulding line, a horizontally placed processing surface enters molten iron or top pouring enters the molten iron, but shrinkage cavities, shrinkage porosity and sand slag holes are easy to appear at the suction hole, so that the mass production of castings is severely restricted.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a DISA vertical green sand molding line B096 cylinder mold, which solves the problems of shrinkage cavity, shrinkage porosity, weight reduction hole, excessive sand, sand sticking and the like of a casting, and greatly improves the casting yield and the process yield; the operation of workers is simple and easy, and the requirement of mass production is met.
In order to achieve the purpose, the invention adopts the technical scheme that:
a DISA vertical green sand molding line B096 cylinder mold comprises a positive pressure plate, a negative pressure plate, an anti-collision column and a positioning pin sleeve, the molding machine is characterized in that sprue cups are arranged on the positive pressure plate and the negative pressure plate, the bottom of each sprue cup of the negative pressure plate is communicated with a cross gate, the tail ends of the cross gates are provided with cross gate risers, a plurality of feeding risers are arranged on the positive pressure plate and the negative pressure plate, a vertical gate is arranged on the lower portion of each feeding riser, both sides of each vertical gate of the positive pressure plate and the negative pressure plate are provided with a mold cavity, two ends of each vertical gate of the positive pressure plate are provided with gates, the gates are horizontally communicated with the mold cavity of the positive pressure plate, exhaust sheets are arranged at the tops of the mold cavities of the positive pressure plate, the exhaust sheets are communicated with exhaust passages, anti-collision columns are arranged at four corners of the positive pressure plate and the negative pressure plate, the positive pressure plate is accurately positioned on a molding machine backboard through positioning.
Preferably, a sprue cup riser is arranged at the bottom of the sprue cup, molten iron enters the sprue cup for precooling and shrinkage, and the sprue cup riser is arranged to ensure the mold filling amount of the molten iron in the sprue cup.
Preferably, the positive pressure plate and the counter pressure plate are respectively provided with a positioning block, so that the positive pressure plate and the counter pressure plate can be accurately positioned when the molding sand is extruded.
Preferably, the die core cavities are arranged at equal intervals in the vertical direction, so that the filling time of each die core cavity is consistent, and the die core is suitable for batch production.
Preferably, the mold core cavities on two sides of the vertical pouring gate are symmetrically arranged, the mold filling completion of the mold core cavities which are symmetrically arranged adjacently is consistent, the exhaust release is consistent, and the consistency of finished products of poured workpieces is ensured.
Preferably, a sprue is arranged on one side of the non-processing surface of the die core cavity, and a pouring channel adopts a mode of firstly transverse and then vertical, so that the die core cavity can be conveniently filled in time, and the shrinkage cavity or shrinkage porosity of the processing surface is reduced.
Further, a casting process of a DISA vertical green sand molding line B096 cylinder is as follows: the method comprises a molding process, a smelting process, an inoculation process, a pouring process, a shakeout process, mechanical property detection, primary shot blasting, external cooperation polishing, secondary shot blasting, inspection and packaging, and warehousing;
1) a molding process, wherein the molding process adopts green sand vertical line flaskless molding, and the green sand vertical line flaskless molding adopts a molding template as an integral template;
the modeling requirement is as follows: the sand shooting pressure is 0.22-0.25MPa, the extrusion pressure is 0.8-1MPa, and the operation is 3A;
the performance requirements of the molding sand are as follows: the thickness of the sand mold is more than 205mm, the hardness of the sand mold is 85-90 by a B-type hardness meter, the water content is 3.2-3.8%, the compaction rate is 30-38%, the wet pressure strength is 0.16-0.22Mpa, the air permeability is 80-150%, the volatile component is 1.5-2.5%, the shear strength is 0.03-0.05Mpa, the water content of the used sand and the regrind sand is 1.5-2.2%, the sand temperature is less than 50 ℃, the ignition loss is 2.8-4.0%, the particle fineness index is 55-65AFS, the effective bentonite is 7.5-9%, and the mud content is 10-12.5%;
2) the smelting process comprises the following steps of charging into an electric furnace, wherein the furnace burden comprises the following components in percentage by weight: 0-20% of scrap iron, 30-60% of scrap steel and 20-70% of return materials, starting the cooling materials in the furnace, gradually changing the raw materials to be red to be bright by using low power of 500 kilowatts with 300-; the temperature of the molten iron is increased to 1400-;
3) the inoculation process comprises the steps of adding an inoculant according to the mechanical property requirement of a B096 cylinder casting, wherein 4.4 +/-0.1 Kg of the inoculant in front of a furnace, 3-10mm of the granularity of the inoculant and 4.0g/s of stream-following inoculant;
4) in the pouring process, the flow guiding needs to be stable and accurate, then the flow is increased to quickly fill the mold, and the mold filling time is 6-7 seconds;
5) a step of knockout, which is to remove casting heads of products after knockout and knockout at a temperature of less than or equal to 400 ℃;
6) detecting mechanical properties, namely detecting tensile strength and hardness of HT 200;
7) performing primary shot blasting, and covering with a shot blasting machine;
8) grinding machine for grinding and dedusting;
9) secondary shot blasting and swing type shot blasting machines;
10) and (5) inspecting, packaging and warehousing, inspecting whether cold shut, fash, staggered boxes, sand holes and slag holes exist, and warehousing finished products.
Further, in the step 1) of molding, sand treatment: according to the weight percentage, the used sand is 93-98%, the new sand is 0-5%, the bentonite is 0.7-1.5%, the coal powder is 0.2-0.5%, and the sand is mixed for 160 seconds by a sand mixer 120-.
Further, in the smelting procedure in the step 2), the contents of main elements such as C, Si, Mn, S and the like are adjusted to S, Mn, the S is increased and then the Mn is increased, ferromanganese is added after the ferrosulfur is completely absorbed, and the ferrosulfur and the ferromanganese are strictly and simultaneously added; when the value of C, Si is adjusted, C is increased first, and then Si is increased; the element C is subject to thermal analysis before the furnace, the other elements are subject to spectrum, the carburant is added along with the furnace charge, the silicon iron is added to be completely absorbed, and the final value C is as follows: 3.35-3.42%, Si: 2.05 to 2.3%, Mn: 0.7-0.85%, S: 0.06-0.09%, P: 0.09 to 0.11 percent of Sn, 0.035 to 0.045 percent of Sn and less than or equal to 0.12 percent of Cr, Mo, Ni and Ti.
Compared with the prior art, the invention has the beneficial effects that:
the mould core cavity is provided with a pouring gate on one side of the non-processing surface, a pouring system adopts the lap joint of positive and negative plate sheets, the pouring gate adopts the mode of firstly transversely crossing and then vertically erecting to reduce the molten iron pressure head to the maximum extent, slow down the molten iron flow rate to strengthen the slag avoiding effect, facilitate the timely filling of the mould core cavity, solve the problems of shrinkage cavity, shrinkage porosity, weight reduction hole, sand sticking and the like of a casting, and greatly improve the yield and the process yield of the casting; the automation degree is high, the operation of workers is simple and easy, and the requirement of mass production is met.
Drawings
FIG. 1 is a top view of a positive pressure plate in a DISA vertical green sand molding line cylinder mold of the present invention;
FIG. 2 is a right side view of a positive pressure plate in a DISA vertical green sand molding line cylinder mold of the present invention;
FIG. 3 is a top view of a back pressure plate in a DISA vertical green sand molding line cylinder mold of the present invention;
FIG. 4 is a right side view of a back pressure plate in a DISA vertical green sand molding line cylinder mold of the present invention;
in the figure: 11. a positive pressure plate; 12. a counter-pressure plate; 13. a pouring cup; 14. a sprue cup riser; 15. a cross gate; 151. a cross gate riser; 16. feeding a riser; 17. a vertical pouring channel; 18. a gate; 19. a mold core cavity; 20. an exhaust sheet; 21. an exhaust passage; 22. an impact post; 23. positioning a pin sleeve; 24. and (5) positioning the blocks.
Detailed Description
For the convenience of understanding of those skilled in the art, the technical solution of the present invention will be further described in detail with reference to fig. 1 to 4.
As shown in the figures 1-4 of the drawings,
a DISA vertical green sand molding line B096 cylinder mold comprises a positive pressure plate 11, a back pressure plate 12, anti-collision columns 22 and positioning pin sleeves 23, wherein sprue cups 13 are arranged on the positive pressure plate 11 and the back pressure plate 12, the bottoms of the sprue cups 13 of the back pressure plate 12 are communicated with cross runners 15, cross runner risers 151 are arranged at the tail ends of the cross runners 15, a plurality of feeding risers 16 are arranged on the positive pressure plate 11 and the back pressure plate 12, vertical runners 17 are arranged at the lower parts of the feeding risers 16, mold cavities 19 are arranged on two sides of the vertical runners of the positive pressure plate 11 and the back pressure plate 12, gates 18 are arranged at two ends of the vertical runner 17 of the positive pressure plate 11, the gates 18 are horizontally communicated with the mold cavities 19 of the positive pressure plate 11, an exhaust sheet 20 is arranged at the top of the mold cavities 19 of the positive pressure plate 11, the exhaust sheet 20 is communicated with the back pressure plate 21, the anti-collision columns 22 are arranged at four corners of the positive pressure plate 11 and the back pressure plate 12, the positioning pin sleeves 23 are, the counter plate 12 is precisely positioned on the molding machine backplate by the locating pin bushings 23.
And a sprue cup riser 14 is arranged at the bottom of the sprue cup 13, molten iron enters the sprue cup for precooling and shrinkage, and the sprue cup riser is arranged to ensure the mold filling amount of the molten iron in the sprue cup.
And the positive pressure plate 11 and the back pressure plate 12 are respectively provided with a positioning block 24, so that the positive pressure plate and the back pressure plate can be accurately positioned when molding sand is extruded.
The die core cavities 19 are arranged vertically at equal intervals, so that the filling time of each die core cavity is consistent, and the die is suitable for batch production.
The mold core cavities 19 on the two sides of the vertical pouring gate 17 are symmetrically arranged, the mold filling completion of the mold core cavities which are symmetrically arranged adjacently is consistent, the exhaust release is consistent, and the consistency of finished products of the poured workpieces is ensured.
A pouring gate 18 is arranged on one side of the non-processing surface of the die core cavity 19, and the pouring gate adopts a mode of firstly transverse and then vertical, so that the die core cavity can be conveniently filled in time, and the shrinkage cavity or shrinkage porosity of the processing surface is reduced.
Example 1:
the casting process of the DISA vertical green sand molding line B096 cylinder is as follows: the method comprises a molding process, a smelting process, an inoculation process, a pouring process, a shakeout process, mechanical property detection, primary shot blasting, external cooperation polishing, secondary shot blasting, inspection and packaging, and warehousing;
1) a molding process, wherein the molding process adopts green sand vertical line flaskless molding, and the green sand vertical line flaskless molding adopts a molding template as an integral template;
the modeling requirement is as follows: selecting operation 3A under the conditions that the sand shooting pressure is 0.22MPa and the extrusion pressure is 0.9 MPa;
the performance requirements of the molding sand are as follows: the thickness of the sand mold is 210mm, the hardness of the sand mold is 85 according to a B-type hardness meter, the water content is 3.3 percent, the compaction rate is 35 percent, the wet pressure strength is 0.18Mpa, the air permeability is 90 percent, the volatile component is 1.5 percent, the shear strength is 0.03Mpa, the water content of the used sand after sand returning is 1.5 percent, the sand temperature is 40 ℃, the ignition decrement is 3.0 percent, the grain fineness index is 58AFS, the effective bentonite is 7.5 percent, and the mud content is 10 percent;
2) the smelting process comprises the following steps of charging into an electric furnace, wherein the furnace burden comprises the following components in percentage by weight: 10% of scrap iron, 50% of scrap steel and 40% of return materials, wherein the return materials are a pouring gate and a riser, the cooling materials in the furnace are started, the low power of 300-kilowatt is used, the raw materials are gradually red to be bright, and the raw materials are normally melted after heat preservation; raising the temperature of molten iron to 1400 ℃, sampling and analyzing the contents of main elements such as C, Si, Mn, S, P, Sn, Cr, Ni and the like, adding alloy, melting, then using a slag collector to collect slag, discharging at 1500 ℃, and discharging 1000Kg of soup;
3) the inoculation process comprises the steps of adding 4.4Kg of inoculant in front of a furnace, 3-10mm of inoculant particle size and 4.0g/s of stream-following inoculant according to the mechanical property requirement of a B096 cylinder casting;
4) in the pouring process, the flow guiding needs to be stable and accurate, then the flow is increased, the mold is rapidly filled, and the mold filling time is 6 seconds;
5) a step of knockout, which is to remove casting heads of products after knockout and knockout at the temperature of 350 ℃;
6) detecting mechanical properties, namely detecting tensile strength and hardness of HT 200;
7) performing primary shot blasting, and covering with a shot blasting machine;
8) grinding machine for grinding and dedusting;
9) secondary shot blasting and swing type shot blasting machines;
10) and (6) inspecting, packaging and warehousing.
Further, in the step 1) of molding, sand treatment: according to the weight percentage, the used sand is 95 percent, the new sand is 3 percent, the bentonite is 1.5 percent, the coal powder is 0.5 percent, and the sand is mixed for 150 seconds by a sand mixer.
Further, in the smelting procedure in the step 2), the contents of main elements such as C, Si, Mn, S and the like are adjusted to S, Mn, the S is increased and then the Mn is increased, ferromanganese is added after the ferrosulfur is completely absorbed, and the ferrosulfur and the ferromanganese are strictly and simultaneously added; when the value of C, Si is adjusted, C is increased first, and then Si is increased; the element C is subject to thermal analysis before the furnace, the other elements are subject to spectrum, the carburant is added along with the furnace charge, the silicon iron is added to be completely absorbed, and the final value C is as follows: 3.38%, Si: 2.15%, Mn: 0.7%, S: 0.07%, P: 0.09 percent of Sn, 0.035 percent of Sn, and less than or equal to 0.12 percent of Cr, Mo, Ni and Ti.
Example 2:
the casting process of the DISA vertical green sand molding line B096 cylinder is as follows: the method comprises a molding process, a smelting process, an inoculation process, a pouring process, a shakeout process, mechanical property detection, primary shot blasting, external cooperation polishing, secondary shot blasting, inspection and packaging, and warehousing;
1) a molding process, wherein the molding process adopts green sand vertical line flaskless molding, and the green sand vertical line flaskless molding adopts a molding template as an integral template;
the modeling requirement is as follows: selecting operation 3A under the conditions that the sand shooting pressure is 0.24MPa and the extrusion pressure is 0.85 MPa;
the performance requirements of the molding sand are as follows: the thickness of the sand mold is 210mm, the hardness of the sand mold is 85 according to a B-type hardness meter, the water content is 3.4 percent, the compaction rate is 35 percent, the wet pressure strength is 0.18Mpa, the air permeability is 100 percent, the volatile component is 2.0 percent, the shear strength is 0.03Mpa, the water content of the used sand after sand returning is 1.8 percent, the sand temperature is 35 ℃, the ignition decrement is 2.8 percent, the grain fineness index is 60AFS, the effective bentonite is 7.8 percent, and the mud content is 12 percent;
2) the smelting process comprises the following steps of charging into an electric furnace, wherein the furnace burden comprises the following components in percentage by weight: 15% of scrap iron, 50% of scrap steel and 35% of return materials, starting the cooling materials in the furnace, gradually turning the raw materials red to be bright by using low power of 300-500 kilowatts, and normally melting after heat preservation; the temperature of molten iron is raised to 1450 ℃, the contents of main elements such as C, Si, Mn, S, P, Sn, Cr, Ni and the like are sampled and analyzed, after the alloy is added and melted, a slag collector is used for gathering slag, the tapping temperature is 1500 ℃, and the soup output amount is 1000 Kg;
3) the inoculation process comprises the steps of adding 4.4Kg of inoculant in front of a furnace, 3-10mm of inoculant particle size and 4.0g/s of stream-following inoculant according to the mechanical property requirement of a B096 cylinder casting;
4) in the pouring process, the flow guiding needs to be stable and accurate, then the flow is increased, the mold is rapidly filled, and the mold filling time is 6 seconds;
5) a step of knockout, which is to remove casting heads of products after knockout and knockout at the temperature of 350 ℃;
6) detecting mechanical properties, namely detecting tensile strength and hardness of HT 200;
7) performing primary shot blasting, and covering with a shot blasting machine;
8) grinding machine for grinding and dedusting;
9) secondary shot blasting and swing type shot blasting machines;
10) and (5) inspecting, packaging and warehousing, inspecting whether cold shut, fash, staggered boxes, sand holes and slag holes exist, and warehousing finished products.
Further, in the step 1) of molding, sand treatment: according to the weight percentage, the used sand is 97 percent, the new sand is 1 percent, the bentonite is 1.5 percent, the coal powder is 0.5 percent, and the sand is mixed for 135 seconds by a sand mixer.
Further, in the smelting procedure in the step 2), the contents of main elements such as C, Si, Mn, S and the like are adjusted to S, Mn, the S is increased and then the Mn is increased, ferromanganese is added after the ferrosulfur is completely absorbed, and the ferrosulfur and the ferromanganese are strictly and simultaneously added; when the value of C, Si is adjusted, C is increased first, and then Si is increased; the element C is subject to thermal analysis before the furnace, the other elements are subject to spectrum, the carburant is added along with the furnace charge, the silicon iron is added to be completely absorbed, and the final value C is as follows: 3.42%, Si: 2.05%, Mn: 0.85%, S: 0.08%, P: 0.11 percent of Sn, 0.035 percent of Cr, Mo, Ni and Ti, and less than or equal to 0.12 percent of Ti.
Example 3:
the casting process of the DISA vertical green sand molding line B096 cylinder is as follows: the method comprises a molding process, a smelting process, an inoculation process, a pouring process, a shakeout process, mechanical property detection, primary shot blasting, external cooperation polishing, secondary shot blasting, inspection and packaging, and warehousing;
1) a molding process, wherein the molding process adopts green sand vertical line flaskless molding, and the green sand vertical line flaskless molding adopts a molding template as an integral template;
the modeling requirement is as follows: selecting operation 3A under the conditions that the sand shooting pressure is 0.25MPa and the extrusion pressure is 1 MPa;
the performance requirements of the molding sand are as follows: the thickness of the sand mold is 215mm, the hardness of the sand mold is 90 according to a B-type hardness meter, the water content is 3.2 percent, the compaction rate is 38 percent, the wet pressure strength is 0.22Mpa, the air permeability is 120 percent, the volatile component is 1.5 percent, the shear strength is 0.04Mpa, the water content of the used sand and the regrind sand is 2.2 percent, the sand temperature is 40 ℃, the ignition loss is 3.0 percent, the grain fineness index is 65AFS, the effective bentonite is 7.5 percent, and the mud content is 10;
2) the smelting process comprises the following steps of charging into an electric furnace, wherein the furnace burden comprises the following components in percentage by weight: 0% of scrap iron, 30% of scrap steel and 70% of return materials, starting the cooling materials in the furnace, gradually turning the raw materials red to be bright by using low power of 300 and 500 kilowatts, and normally melting after heat preservation; the temperature of molten iron is raised to 1450 ℃, the contents of main elements such as C, Si, Mn, S, P, Sn, Cr, Ni and the like are sampled and analyzed, after the alloy is added and melted, a slag collector is used for gathering slag, the tapping temperature is 1500 ℃, and the soup output amount is 1000 Kg;
3) the inoculation process comprises the steps of adding 4.4Kg of inoculant in front of a furnace, 3-10mm of inoculant particle size and 4.0g/s of stream-following inoculant according to the mechanical property requirement of a B096 cylinder casting;
4) in the pouring process, the flow guiding needs to be stable and accurate, then the flow is increased, the mold is rapidly filled, and the mold filling time is 6 seconds;
5) a step of knockout, which is to remove casting heads of products after knockout and knockout at a temperature of less than or equal to 380 ℃;
6) detecting mechanical properties, namely detecting tensile strength and hardness of HT 200;
7) performing primary shot blasting, and covering with a shot blasting machine;
8) grinding machine for grinding and dedusting;
9) secondary shot blasting and swing type shot blasting machines;
10) and (5) inspecting, packaging and warehousing, inspecting whether cold shut, fash, staggered boxes, sand holes and slag holes exist, and warehousing finished products.
Further, in the step 1) of molding, sand treatment: according to the weight percentage, the used sand is 95 percent, the new sand is 3.5 percent, the bentonite is 1.0 percent, and the coal powder is 0.5 percent, and the sand is mixed for 140 seconds by a sand mixer.
Further, in the smelting procedure in the step 2), the contents of main elements such as C, Si, Mn, S and the like are adjusted to S, Mn, the S is increased and then the Mn is increased, ferromanganese is added after the ferrosulfur is completely absorbed, and the ferrosulfur and the ferromanganese are strictly and simultaneously added; when the value of C, Si is adjusted, C is increased first, and then Si is increased; the element C is subject to thermal analysis before the furnace, the other elements are subject to spectrum, the carburant is added along with the furnace charge, the silicon iron is added to be completely absorbed, and the final value C is as follows: 3.40%, Si: 2.2%, Mn: 0.8%, S: 0.06%, P: 0.09 percent of Sn, 0.045 percent of Sn, and less than or equal to 0.12 percent of Cr, Mo, Ni and Ti.
Example 4:
the casting process of the DISA vertical green sand molding line B096 cylinder is as follows: the method comprises a molding process, a smelting process, an inoculation process, a pouring process, a shakeout process, mechanical property detection, primary shot blasting, external cooperation polishing, secondary shot blasting, inspection and packaging, and warehousing;
1) a molding process, wherein the molding process adopts green sand vertical line flaskless molding, and the green sand vertical line flaskless molding adopts a molding template as an integral template;
the modeling requirement is as follows: selecting operation 3A under the conditions that the sand shooting pressure is 0.24MPa and the extrusion pressure is 0.9 MPa;
the performance requirements of the molding sand are as follows: the thickness of the sand mold is 215mm, the hardness of the sand mold is 85 according to a B-type hardness meter, the water content is 3.2 percent, the compaction rate is 35 percent, the wet pressure strength is 0.18Mpa, the air permeability is 130 percent, the volatile component is 1.5 percent, the shear strength is 0.05Mpa, the water content of the used sand and the regrind sand is 2.0 percent, the sand temperature is 30 ℃, the ignition loss is 3.5 percent, the grain fineness index is 57AFS, the effective bentonite is 9 percent, and the mud content is 12.5;
2) the smelting process comprises the following steps of charging into an electric furnace, wherein the furnace burden comprises the following components in percentage by weight: 15% of scrap iron, 45% of scrap steel and 40% of return materials, starting the cooling materials in the furnace, gradually turning the raw materials red to be bright by using low power of 300-kilowatt, and normally melting after heat preservation; the temperature of molten iron is raised to 1450 ℃, the contents of main elements such as C, Si, Mn, S, P, Sn, Cr, Ni and the like are sampled and analyzed, after the alloy is added and melted, a slag collector is used for gathering slag, the tapping temperature is 1500 ℃, and the soup output amount is 1000 Kg;
3) the inoculation process comprises the steps of adding 4.4Kg of inoculant in front of a furnace, 3-10mm of inoculant particle size and 4.0g/s of stream-following inoculant according to the mechanical property requirement of a B096 cylinder casting;
4) in the pouring process, the flow guiding needs to be stable and accurate, then the flow is increased to quickly fill the mold, and the mold filling time is 6-7 seconds;
5) a step of knockout, which is to remove casting heads of products after knockout and knockout at a temperature of less than or equal to 400 ℃;
6) detecting mechanical properties, namely detecting tensile strength and hardness of HT 200;
7) performing primary shot blasting, and covering with a shot blasting machine;
8) grinding machine for grinding and dedusting;
9) secondary shot blasting and swing type shot blasting machines;
10) and (5) inspecting, packaging and warehousing, inspecting whether cold shut, fash, staggered boxes, sand holes and slag holes exist, and warehousing finished products.
Further, in the step 1) of molding, sand treatment: according to the weight percentage, the used sand is 94 percent, the new sand is 4 percent, the bentonite is 1.5 percent, the coal powder is 0.5 percent, and the sand is mixed for 150 seconds by a sand mixer.
Further, in the smelting procedure in the step 2), the contents of main elements such as C, Si, Mn, S and the like are adjusted to S, Mn, the S is increased and then the Mn is increased, ferromanganese is added after the ferrosulfur is completely absorbed, and the ferrosulfur and the ferromanganese are strictly and simultaneously added; when the value of C, Si is adjusted, C is increased first, and then Si is increased; the element C is subject to thermal analysis before the furnace, the other elements are subject to spectrum, the carburant is added along with the furnace charge, the silicon iron is added to be completely absorbed, and the final value C is as follows: 3.35%, Si: 2.3%, Mn: 0.85%, S: 0.06%, P: 0.09 percent of Sn, 0.035 percent of Sn, and less than or equal to 0.12 percent of Cr, Mo, Ni and Ti.
Test example:
in the casting processes of examples 1, 2, 3 and 4, 100 cylinder castings were randomly taken out, and the metallographic structure, appearance quality and mechanical test were performed 400 times, and data were recorded to calculate an average value as shown in the following table.
The above data show that: the die structure and the process solve the problems of shrinkage cavity, shrinkage porosity, heavy weight reducing hole, sand sticking and the like of the casting, greatly improve the yield of the casting and the yield of the process, and meet the requirement of mass production; the mechanical property is excellent, and the service life of the casting is greatly prolonged.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (6)
1. A DISA vertical green sand molding line cylinder mold comprises a positive pressure plate, a back pressure plate, an anti-collision column and a positioning pin sleeve, the molding machine is characterized in that sprue cups are arranged on the positive pressure plate and the negative pressure plate respectively, the bottom of each sprue cup of the negative pressure plate is communicated with a cross runner, a cross runner riser is arranged at the tail end of the cross runner, a plurality of feeding risers are arranged on the positive pressure plate and the negative pressure plate respectively, a vertical runner is arranged at the lower part of each feeding riser, mold cavity cavities are arranged on two sides of each of the positive pressure plate and the negative pressure plate, a sprue is arranged at two ends of each of the positive pressure plate and the negative pressure plate, the sprue is horizontally communicated with the mold cavity of the positive pressure plate, an exhaust sheet is arranged at the top of the mold cavity of the positive pressure plate and communicated with an exhaust passage, anti-collision columns are arranged at four corners of the positive pressure plate and the negative pressure plate, positioning pin sleeves are arranged at four corners of the positive pressure plate and.
2. A DISA vertical green sand molding line cylinder mold according to claim 1, wherein a sprue cup riser is provided at the bottom of the sprue cup.
3. The DISA vertical green sand molding line cylinder mold of claim 1, wherein the positive pressure plate and the negative pressure plate are provided with positioning blocks.
4. The DISA vertical green sand molding line cylinder mold of claim 1 wherein the mold core cavities are vertically equidistantly spaced.
5. The DISA vertical green sand molding line cylinder mold of claim 1 wherein the mold core cavities on both sides of the vertical sprue are symmetrically arranged.
6. The DISA vertical green sand molding line cylinder mold of claim 1, wherein the non-processing side of the core cavity is provided with a sprue, the sprue being in a horizontal-to-vertical manner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920630789.7U CN209849837U (en) | 2019-05-05 | 2019-05-05 | DISA vertical green sand molding line cylinder mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920630789.7U CN209849837U (en) | 2019-05-05 | 2019-05-05 | DISA vertical green sand molding line cylinder mould |
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| Publication Number | Publication Date |
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| CN209849837U true CN209849837U (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109940134A (en) * | 2019-05-05 | 2019-06-28 | 山东格新精工有限公司 | A kind of vertical green sand molding line cylinder mold of DISA and its casting technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940134A (en) * | 2019-05-05 | 2019-06-28 | 山东格新精工有限公司 | A kind of vertical green sand molding line cylinder mold of DISA and its casting technique |
| CN109940134B (en) * | 2019-05-05 | 2024-02-27 | 山东格新精工有限公司 | DISA vertical green sand molding line cylinder mold and casting process thereof |
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