CN110465629A - The manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting - Google Patents
The manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting Download PDFInfo
- Publication number
- CN110465629A CN110465629A CN201910804151.5A CN201910804151A CN110465629A CN 110465629 A CN110465629 A CN 110465629A CN 201910804151 A CN201910804151 A CN 201910804151A CN 110465629 A CN110465629 A CN 110465629A
- Authority
- CN
- China
- Prior art keywords
- model
- chill
- magnesium iron
- automobiles
- pressure core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
Abstract
The invention discloses a kind of manufacturing methods of Press Tools for Automobiles magnesium iron pressure core class casting, comprising steps of the production of S1, model；S2, model is put into sandbox, filling moulding；S3, casting；S4, cooling take out casting；Wherein, in step s 2, graphite rod is placed at the dowel hole of model, chill is placed at the side pin hole of model, chill includes chill ontology and the dope layer in the setting of chill body surface.The manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting of the invention, by the way that graphite rod and chill are arranged on model, it is possible to reduce shrinkage cavity defect occur in dowel hole and side pin hole position, so as to improve the product quality of magnesium iron pressure core class casting.
Description
Technical field
The invention belongs to cavityless casting fields, specifically, the present invention relates to a kind of Press Tools for Automobiles magnesium irons to press core class
The manufacturing method of casting.
Background technique
After Press Tools for Automobiles sheet-metal formed, needs to carry out multiple process and the operation such as deburring is punched out to metal plate, generally
Subsequent design structure is pressure core class formation, is typically designed with dowel hole, convenient for being oriented to during model running.Side pin hole, is divided into
Secure side pin and stroke side pin, secure side pin are protection structure, mainly prevent pressure core from falling and safety accident occur, stroke side
Pin presses core walking position for control, since pressure core is typically placed on upper die holder, is located at the upper surface of press, therefore side pin hole pair
In most important using quality and safety.
In existing magnesium iron pressure core class castings production technique, due to the relatively thick big not good control of dowel hole design wall thickness
Measure, it is easy to shrinkage porosite/shrinkage cavity defect occur, be generally present in the fitness of influence later period guide sleeve after internal process.It is right
Position is sold in side, structure designs Shi Hou great thermal center and is in casting lower part, and placement external chill chill effect is limited, and riser can not feeding
To the position, it is easy to Shrinkage Problem occur in processing, due to being designed into safety, a possibility that casting is scrapped is very big；It is another
Aspect, since magnesium iron pressure core class formation is thin, ductile iron liquid poor fluidity, iron liquid C content itself is higher, cooling fast, eps foam
Gasification not exclusively, is easy to appear Surface Wrinkle in iron defect problem.
Summary of the invention
The present invention provides a kind of manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting, it is therefore an objective to improve magnesium iron pressure core
The product quality of class casting.
To achieve the goals above, the technical scheme adopted by the invention is as follows: Press Tools for Automobiles magnesium iron presses core class casting
Manufacturing method, comprising steps of
The production of S1, model；
S2, model is put into sandbox, filling moulding；
S3, casting；
S4, cooling take out casting；
Wherein, in step s 2, graphite rod is placed at the dowel hole of model, chill is placed on to the side pin hole of model
Place, chill include chill ontology and the dope layer in the setting of chill body surface.
The material of the dope layer is alcohol-base paint.
The dope layer with a thickness of 1.2-2mm.
The length of the chill is 150-200mm.
In the step S3, the chemical component weight percentage of molten metal are as follows: C 3.3-3.5%, Si 2.5-2.7%,
Mn 0.4-0.5%, Cr≤0.12%, Mo 0.3-0.4%, Cu 0.8-0.9%, Ni 0.9-1.0%, Mg 0.04-
0.06%, Re 0.02-0.04%, P≤0.05%, S≤0.012%, remaining is Fe and inevitable impurity element.
In the step S3, using running gate system, running gate system includes sprue, cross gate and ingate, cross gate
It is connect with sprue and ingate.
The manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting of the invention, by be arranged on model graphite rod and
Chill, it is possible to reduce shrinkage cavity defect occur in dowel hole and side pin hole position, so as to improve the product of magnesium iron pressure core class casting
Quality.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the cooperation schematic diagram of running gate system, chill and graphite rod and magnesium iron pressure core model；
Fig. 2 is the cooperation schematic diagram of running gate system and magnesium iron pressure core model；
Fig. 3 is the structural schematic diagram of chill；
In the figure, it is marked as 1, sprue；2, cross gate；3, ingate；4, model；401, dowel hole；402, side pin hole；5,
Graphite rod；6, chill.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution
Solution, and facilitate its implementation.
As shown in Figure 1 to Figure 3, the present invention provides a kind of Press Tools for Automobiles magnesium iron pressure core class casting manufacturing method,
Comprising steps of
The production of S1, model；
S2, model is put into sandbox, filling moulding；
S3, casting；
S4, cooling take out casting；
Wherein, in step s 2, graphite rod 5 is placed at the dowel hole of model, the side that chill 6 is placed on model is sold
At hole, chill 6 includes chill ontology and the dope layer in the setting of chill body surface.
Specifically, as depicted in figs. 1 and 2, the shape of core is pressed according to magnesium iron, model is made, magnesium iron pressure core is to be mounted on
Material pressing core on the upper die holder of Press Tools for Automobiles, magnesium iron pressure core are connect by guide post with upper die holder, and guide post is vertically arranged, ball
Iron pressure core has the dowel hole for allowing guide sleeve to be inserted into, and guide sleeve is fixedly mounted in the dowel hole of magnesium iron pressure core, and guide post is inserted into guide sleeve.
Magnesium iron presses the generally rectangular shaped structure of core, and dowel hole is arranged four altogether, and four right angles that four dowel holes are distributed in magnesium iron pressure core turn
At angle.Side pin is provided on upper die holder, upper die holder is sold by side drives magnesium iron that core is pressed to move up along the vertical direction, and magnesium iron presses core
With the side pin hole for allowing side pin to be inserted into, side pin is horizontally disposed, the axis of side pin and the axis perpendicular of guide post, one end of side pin
In insertion side pin hole, the other end of side pin is located at the outside of side pin hole and the end of side pin and is fixedly connected with upper die holder, side pin hole
Multiple and side pin hole is arranged to be distributed on the opposite sides face of magnesium iron pressure core.
As depicted in figs. 1 and 2, in above-mentioned steps S1, the shape of core is pressed according to magnesium iron, is made model, is finally made
Model is equipped with dowel hole and side pin hole.The generally rectangular shaped structure of model, model have first surface and second surface, the first table
Face and second surface are plane and first surface and second surface are perpendicular, the length direction and width of first surface and model
The parallel and thickness direction with model in direction is perpendicular, second surface it is parallel with the width and thickness direction of model and
Perpendicular with the length direction of model, the length direction, width direction and thickness direction of model is orthogonal.Dowel hole setting exists
On the first surface of model, dowel hole is circular hole and dowel hole is the thickness direction along model through setting, the axis of dowel hole
It is perpendicular with the first surface of model.Side pin hole is arranged on the second surface of model, and there are two the second surface tools of model, side
Pin hole is kidney slot, and the length direction of side pin hole and the thickness direction of model are parallel, and side pin hole is on the second surface of model
It is arranged multiple and to have side pin hole is to be sequentially arranged along the length direction of second surface more, the length direction of second surface and model
Width direction is parallel.
As shown in Figure 1 to Figure 3, the shape of the side pin hole of the shape of chill ontology and model matches, and dope layer is by applying
The coating overlayed on the outer surface of chill ontology is formed, and the material of dope layer is alcohol-base paint, and the thickness of dope layer is preferably
1.2-2mm, main purpose are to facilitate the disengaging of chill and casting after manufacture.Chill 6 has certain length, chill 6
Length be preferably 150-200mm, the length of chill 6 is 3-5mm smaller than the length that the side of stamping die is sold.
As depicted in figs. 1 and 2, graphite rod 5 is cylindrical body, and graphite rod 5 is placed on model, and graphite rod 5 covers model
Dowel hole, due to graphite rod 5 have Thermal conductivity, on the one hand can obstruct thermal center, on the other hand can be in process
Middle promotion dowel hole position heat dissipation and enhancing Quench, so that Shrinkage Problem occurs in the dowel hole position processing for reducing casting.Therefore,
Graphite rod 5 is for thermally conductive to casting progress when casting is cooling, and graphite rod 5 walks the heat transfer of casting, and casting can be improved
The cooling velocity of part shortens temperature fall time, improves production efficiency.
As shown in Figure 1 to Figure 3, in above-mentioned steps S2, model is horizontal positioned, the first surface position of model in sandbox
In the lower section of second surface, first surface is the top surface of model at this time, and first surface is horizontal plane, and second surface is vertical plane；
Then graphite rod 5 is placed in the top of model, the state in a vertical shape of graphite rod 5 is placed on the first surface of model, and graphite rod 5 is total
It places four and each graphite rod 5 is located at the top of a dowel hole, the axis of graphite rod 5 is located in vertical plane, graphite
The lower end surface of stick 5 is bonded with first surface, and graphite rod 5 closes the circular open that dowel hole is formed on the first surface；In mould
Chill 6 is placed in the side of type, and chill 6, which is in a horizontal state, is placed on outside and the length direction of chill 6 and the length of model of model
It is parallel to spend direction, one end end face of chill 6 is bonded with the second surface of model, and by 6 closed side pin hole of chill in model
Second surface on the opening that is formed.(cross section refers to perpendicular with the length direction of chill 6 cross-sectional shape of chill 6
Section) it is identical as the shape of side pin hole, be in contact at the position of side pin hole with model by the way that chill 6 is arranged, chill 6 can be with
Accelerate the solidification of molten metal, enhances Quench, so that the side pin hole position of casting be made to be less prone to Shrinkage cavity defect.
As shown in Figure 1 to Figure 3, it in above-mentioned steps S2, is placed respectively at the position of each side pin hole of corresponding model
One chill 6, chill 6 places six altogether and six chills 6 are arranged in two rows of, and model is located between two rows of chills 6.
In above-mentioned steps S3, the chemical component weight percentage of molten metal are as follows: C 3.3-3.5%, Si 2.5-2.7%,
Mn 0.4-0.5%, Cr≤0.12%, Mo 0.3-0.4%, Cu 0.8-0.9%, Ni 0.9-1.0%, Mg 0.04-
0.06%, Re 0.02-0.04%, P≤0.05%, S≤0.012%, remaining is Fe and inevitable impurity element.This hair
Bright manufacturing method reduces the content of C by adjusting the chemical component of molten metal, increases Si content, makes the carbon equivalent of molten metal
Still in hypereutectic composition, improve elephant skin problem, helps to improve the product quality of magnesium iron pressure core class casting.
In step s3, using running gate system, as depicted in figs. 1 and 2, running gate system includes sprue 1,2 and of cross gate
Ingate 3, cross gate 2 are connect with sprue 1 and ingate 3.Sprue 1 is vertically arranged, and cross gate 2 is horizontally disposed, cross
The length direction of running channel 2 and the length direction of model are parallel, and the lower end apopore of sprue 1 is connect with cross gate 2.Ingate
3 are vertically arranged, and ingate 3 is vertically arranged, and the length direction of ingate 3 is parallel with the length direction of sprue 1.Model
In sandbox be it is horizontal positioned, cross gate 2 and ingate 3 are located at the lower section of model and cross gate 2 is located at the lower section of ingate 3,
The lower end water inlet of ingate 3 is connect with cross gate 2.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (6)
1. the manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting, which is characterized in that comprising steps of
The production of S1, model；
S2, model is put into sandbox, filling moulding；
S3, casting；
S4, cooling take out casting；
Wherein, in step s 2, graphite rod is placed at the dowel hole of model, chill is placed at the side pin hole of model,
Chill includes chill ontology and the dope layer in the setting of chill body surface.
2. the manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting according to claim 1, which is characterized in that described
The material of dope layer is alcohol-base paint.
3. the manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting according to claim 1 or 2, which is characterized in that
The dope layer with a thickness of 1.2-2mm.
4. the manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting according to any one of claims 1 to 3, feature exist
In the length of the chill is 150-200mm.
5. the manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting according to any one of claims 1 to 4, feature exist
In, in the step S3, the chemical component weight percentage of molten metal are as follows: C 3.3-3.5%, Si 2.5-2.7%, Mn
0.4-0.5%, Cr≤0.12%, Mo 0.3-0.4%, Cu 0.8-0.9%, Ni 0.9-1.0%, Mg 0.04-0.06%, Re
0.02-0.04%, P≤0.05%, S≤0.012%, remaining is Fe and inevitable impurity element.
6. the manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting according to any one of claims 1 to 5, feature exist
In, in the step S3, using running gate system, running gate system includes sprue, cross gate and ingate, cross gate with directly pour
Road is connected with ingate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910804151.5A CN110465629A (en) | 2019-08-28 | 2019-08-28 | The manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting |
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|---|---|---|---|
| CN201910804151.5A CN110465629A (en) | 2019-08-28 | 2019-08-28 | The manufacturing method of Press Tools for Automobiles magnesium iron pressure core class casting |
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| CN110465629A true CN110465629A (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111136219A (en) * | 2020-01-13 | 2020-05-12 | 芜湖泓鹄材料技术有限公司 | Manufacturing method of lower die assembly casting of automobile side wall stamping die |
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| CN111136219B (en) * | 2020-01-13 | 2021-03-19 | 芜湖泓鹄材料技术有限公司 | Manufacturing method of lower die assembly casting of automobile side wall stamping die |
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Application publication date: 20191119 |
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