CN105506468B - The preparation method of buffer - Google Patents
The preparation method of buffer Download PDFInfo
- Publication number
- CN105506468B CN105506468B CN201510969455.9A CN201510969455A CN105506468B CN 105506468 B CN105506468 B CN 105506468B CN 201510969455 A CN201510969455 A CN 201510969455A CN 105506468 B CN105506468 B CN 105506468B
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- Prior art keywords
- buffer
- arenaceous shell
- sand
- buddhist nun
- preparation
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A kind of preparation method of buffer, preparation process includes：No. 2 thermosetting resins of nation Buddhist nun are mixed with quartz sand first, acquisition prepares the sand material of buffer arenaceous shell, the usage amount of No. 2 thermosetting resins of nation Buddhist nun is the 1.3 2.0% of quartz sand weight；Then sand material is put into penetrating sand machine and obtains the arenaceous shell with buffer die cavity；Then by the pouring metal melt of the raw materials melt of buffer into arenaceous shell；After the completion of to be cast, 0.6 1.5h, No. 2 thermosetting resin pyrolysis devolatilizations of nation Buddhist nun in arenaceous shell, quartz sand is scattered from the metal surface of condensation, obtains buffer products.The present invention has the advantages that sand is defeated and dispersed clean, low without artificial sanding, production cost.
Description
Technical field
The present invention is to be related to a kind of buffer casting technology field, and in particular to a kind of preparation method of buffer.
Background technology
Buffer is part very crucial in motor vehicle, and the quality of its quality directly affects the anti-seismic performance and car of vehicle
Security performance, the super-huge buffer particularly used on train, its quality quality it is more crucial, used on train
Buffer, as shown in Figure 1：Multiple mounting holes, groove etc. are set in the buffer main body of usually one rectangular-shape, main body；
The structures such as installation position hole and screens are also provided with inside it.The buffer of this structure is due to the particularity of structure, traditional forging
Method can not realize, at present using it is more be casting method, i.e. concrete technology flow process is as follows：1) production process preparation, according to
Part drawing, production batch and the time of delivery to be produced, production technology scheme and technical papers are formulated, foundary methods drawing is drawn；
2) Operational preparation, including prepare the technological equipments such as fusing material, molding and core making material and apperance, core box, sandbox；3) moulding
With coremaking；4) fusing and cast；5) master operation such as peeling and castings examination.Forming Theory：METAL HEATING PROCESS is melted, made
It has mobility, is then poured into the effigurate casting mold die cavity of tool, in gravity or external force (pressure, centrifugal force, electromagnetism
Power etc.) in the presence of be full of die cavity, cool down and be frozen into a kind of metal forming method of casting (or part).Above-mentioned casting process
Need to use a large amount of sands, and sand mold manufacturing process is more, follow-up sand removal task weight, workman needs the sanding of big workload, so that
The amount of labour of workman is considerably increased, and foundry's dust is big, production cost is high.
The content of the invention
The present invention for prior art it is above-mentioned it is not enough there is provided a kind of sand it is defeated and dispersed it is clean, without artificial sanding, be produced into
The preparation method of this low buffer.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of preparation method of buffer, is prepared
Step includes：
(1) No. 2 thermosetting resins of nation Buddhist nun are mixed with quartz sand first, acquisition prepares the sand material of buffer arenaceous shell,
The usage amount of No. 2 thermosetting resins of nation Buddhist nun is the 1.3-2.0% of quartz sand weight；
(2) the sand material and then by step (1) prepared is put into penetrating sand machine, sand material is heated into 140-160 DEG C, then in 4-
Sandblasting moulding under the pressure of 6 atmospheric pressure, obtains the arenaceous shell with buffer die cavity, and arenaceous shell natural cooling is stand-by, the thickness of arenaceous shell
Spend for 30-70mm；
(3) raw material of buffer is prepared according to each component configuration of following percentage by weight：Carbon (C) 0.3-0.35%, manganese
(Mn) 1.0-1.2%, silicon (Si) 0.2-0.4%, chromium (Cr) 0.30-0.50%, molybdenum (Mo) 0.10-0.15%, nickel (Ni)≤
0.25%, sulphur (S)≤0.06%, phosphorus (P)≤0.05%, surplus is iron；Then raw material Hybrid Heating melts to 1000-1300
DEG C, in the arenaceous shell for then preparing the pouring metal melt of melting to step (2)；
(4) No. 2 thermosetting resin pyrolysis devolatilizations of nation Buddhist nun in the 0.6-1.5h after the completion of to be cast, arenaceous shell, quartz sand from
The metal surface of condensation is scattered, and obtains buffer products.
Preferably, the usage amount of No. 2 thermosetting resins of nation Buddhist nun described in step (1) is the 1.5- of quartz sand weight
1.6%；Using the proportioning, it can be very good to realize the casting mold effect of arenaceous shell, while also can guarantee that arenaceous shell disperses in time.
Preferably, the thickness of the arenaceous shell described in step (2) is 50-70m；Using the thickness, metal liquid can be ensured
The fully condensation shaping in arenaceous shell, while also can guarantee that arenaceous shell disperses in time.
No. 2 thermosetting resins (BN-02) of nation Buddhist nun of the present invention, buy the nation sold from nation Buddhist nun's chemical industry (Tianjin) Co., Ltd
Buddhist nun's curing agent.
The advantages of the present invention：
1. the present invention is first using the compound for being mixed No. 2 thermosetting resins of nation Buddhist nun with quartz sand, for preparing
Arenaceous shell with buffer die cavity, then into arenaceous shell, direct cast prepares the metal liquid of buffer, although metal liquid condensing
Heat release, No. 2 thermosetting resin heat resolves of nation Buddhist nun in arenaceous shell are volatilized, and quartz sand is then due to without No. 2 thermosettings of nation Buddhist nun
Property resin cementation and naturally disperse come off, so as to directly obtain the smooth buffer products in surface；The present invention is by closing
The addition of No. 2 thermosetting resins of thickness and nation Buddhist nun of reason control arenaceous shell, fully ensures that molten metal is cooled and shaped effect and stone
Sand is scattered the time；So as to abandon the numerous and diverse process and workman's sanding process of traditional sand mould casting method, greatly save
Manpower reduces production cost.And this technique is even more to be different from other conventional casting techniques：Using formaldehydeless, reactive phenol tree
Fat realizes no sand removal process；The advantage of sand reclamation rate about more than 95%.
2. the preparation method of the present invention, it is not necessary to which workman manufactures sand mold, and preparation section is simple, and work situation is obtained significantly
Improve, more environmental protection, pollute small；And the process of the sand-blasting machine manufacture arenaceous shell used prepares product one similar to injection machine
Sample, by rational design temperature and blasting pressure, be and bumper shapes with regard to that can obtain inside qualified arenaceous shell product, arenaceous shell
Identical die cavity；The present invention uses pressure mo(u)lding equipment, compression molding, and casting accuracy can reach CT6 grades (6 grades of national standards of casting),
Distinguish other techniques and lift 2 grades；Then raw material is directly heated into melt casting in the die cavity of arenaceous shell, metal liquid condensing,
The arenaceous shell in outside disperses, that is, obtains product, it is not necessary to the process such as founding, shakeout, sanding；Save labor intensity and labour：Into
Type, carrying use automation mechanized operation, and manpower 1/3 is saved than other " resin sand casting " techniques, and 2/ is saved than " solvent casting "
3。
3. the present invention No. 2 thermosetting resins due to its own institutional framework advantage so that molding sand surface have one layer it is special
Oil film, molding sand surface stability and good security are improved beneficial to surface quality of continuous castings；Top layer occurs pyrolysis and formed at high temperature
Bright carbon, forms reducing atmosphere on casting mold and metal interface, it is therefore prevented that the oxidation of metal surface, makes surface roughness
Refinement, it is smooth；And resin decomposition thing formaldehyde, reactive phenol, more environmentally-friendly, safety；And the quartz sand being scattered can be fully sharp again
With.The economy of present invention process：15-20% is improved than other " resin sand casting " technique profits, than " solvent casting " profit
Profit improves 25-30%.
Brief description of the drawings
Fig. 1 buffer structure schematic diagrames of the present invention.
Embodiment
The present invention is described in further detail below by embodiment, but the present invention is not limited solely to following examples.
Accompanying drawing 1 is buffer of the invention.
Embodiment 1
(1) No. 2 thermosetting resins of nation Buddhist nun are mixed with quartz sand first, acquisition prepares the sand material of buffer arenaceous shell,
The usage amount of No. 2 thermosetting resins of nation Buddhist nun is the 1.5% of quartz sand weight；
(2) the sand material and then by step (1) prepared is put into penetrating sand machine, sand material is heated into 150-155 DEG C, then 6
Sandblasting moulding under the pressure of individual atmospheric pressure, obtains the arenaceous shell with buffer die cavity, and arenaceous shell natural cooling is stand-by, the thickness of arenaceous shell
For 50mm；
(3) raw material of buffer is prepared according to each component configuration of following percentage by weight：Carbon (C) 0.31%, manganese (Mn)
1.0%, silicon (Si) 0.3%, chromium (Cr) 0.4%, molybdenum (Mo) 0.12%, nickel (Ni) 0.20%, sulphur (S) 0.05%, phosphorus (P)
0.04%, surplus is iron；Then raw material Hybrid Heating melts to 1000-1300 DEG C, then by the pouring metal melt of melting to step
Suddenly in the arenaceous shell that prepared by (2)；
(4) after the completion of to be cast, No. 2 thermosetting resin pyrolysis devolatilizations of nation Buddhist nun after 1h in arenaceous shell, quartz sand is from condensation
Metal surface is scattered, and obtains buffer products.
Embodiment 2
(1) No. 2 thermosetting resins of nation Buddhist nun are mixed with quartz sand first, acquisition prepares the sand material of buffer arenaceous shell,
The usage amount of No. 2 thermosetting resins of nation Buddhist nun is the 1.8% of quartz sand weight；
(2) the sand material and then by step (1) prepared is put into penetrating sand machine, sand material is heated into 155-160 DEG C, then 5
Sandblasting moulding under the pressure of individual atmospheric pressure, obtains the arenaceous shell with buffer die cavity, and arenaceous shell natural cooling is stand-by, the thickness of arenaceous shell
For 60mm；
(3) raw material of buffer is prepared according to each component configuration of following percentage by weight：Carbon (C) 0.35%, manganese (Mn)
1.1%, silicon (Si) 0.36%, chromium (Cr) 0.46%, molybdenum (Mo) 0.14%, nickel (Ni) 0.10%, sulphur (S) 0.03%, phosphorus (P)
0.03%, surplus is iron；Then raw material Hybrid Heating melts to 1260-1300 DEG C, then by the pouring metal melt of melting to step
Suddenly in the arenaceous shell that prepared by (2)；
(4) after the completion of to be cast, 0.6h, No. 2 thermosetting resin pyrolysis devolatilizations of nation Buddhist nun in arenaceous shell, quartz sand is from condensation
Metal surface is scattered, and obtains buffer products.
Embodiment 3
(1) No. 2 thermosetting resins of nation Buddhist nun are mixed with quartz sand first, acquisition prepares the sand material of buffer arenaceous shell,
The usage amount of No. 2 thermosetting resins of nation Buddhist nun is the 1.6% of quartz sand weight；
(2) the sand material and then by step (1) prepared is put into penetrating sand machine, and sand material is heated into 140-145 DEG C, Ran Hou
Sandblasting moulding under the pressure of 4.5 atmospheric pressure, obtains the arenaceous shell with buffer die cavity, and arenaceous shell natural cooling is stand-by, arenaceous shell
Thickness is 35mm；
(3) raw material of buffer is prepared according to each component configuration of following percentage by weight：Carbon (C) 0.31%, manganese (Mn)
1.0%, silicon (Si) 0.22%, chromium (Cr) 0.35%, molybdenum (Mo) 0.11%, nickel (Ni) 0.15%, sulphur (S) 0.03%, phosphorus (P)
0.03%, surplus is iron；Then raw material Hybrid Heating melts to 1000-1050 DEG C, then by the pouring metal melt of melting to step
Suddenly in the arenaceous shell that prepared by (2)；
(4) after the completion of to be cast, 1h, No. 2 thermosetting resin pyrolysis devolatilizations of nation Buddhist nun in arenaceous shell, gold of the quartz sand from condensation
Metal surface is scattered, and obtains buffer products.
Performance detection is carried out to sample prepared by embodiment, its testing result is as shown in small table 1：
Table 1
It was found from above-mentioned detection data, the method for preparing of the present invention has elongation percentage high, and impact flexibility is strong, high excellent of hardness
Point, fully meets the use environment requirement of buffer.
The penetrating sand machine of the present invention can use commercially available coated sand core shooting machine, operation principle：It is using compressed air that molding sand is equal
The even pre- consolidation of injection sandbox, then applies pressure and is compacted, conventional has vertical parting flaskless shoot-squeeze moulding machine and water again
Flat parting and removable flask shoot and squeeze molding machine, vertical parting flaskless shoot-squeeze moulding machine moulding is emitted directly toward with template without sandbox, molding sand
Moulding room, make that sand mold dimensional accuracy is high, there is die cavity on sandbox two sides, and productivity ratio is high, but lower core is difficult, will to molding sand quality
Ask strict, horizontal parting slip flask shoot-squeeze moulding machine carries out moulding using sandbox, mould assembly drawing after sand mold is made, lower core is convenient, raw
Yield is high.Above-mentioned penetrating sand machine and operation principle are applied to the present invention.
Claims (3)
1. a kind of preparation method of buffer, it is characterised in that：Preparation process includes：
（1）No. 2 thermosetting resins of nation Buddhist nun are mixed with quartz sand first, acquisition prepares the sand material of buffer arenaceous shell, nation Buddhist nun 2
The usage amount of number thermosetting resin is the 1.3-2.0% of quartz sand weight；
（2）Then by step（1）The sand material of preparation is put into penetrating sand machine, and sand material is heated into 140-160 DEG C, then at 4-6
Sandblasting moulding under the pressure of atmospheric pressure, obtains the arenaceous shell with buffer die cavity, and arenaceous shell natural cooling is stand-by, and the thickness of arenaceous shell is
30-70mm can ensure metal liquid fully condensation shaping in arenaceous shell, while also can guarantee that arenaceous shell disperses in time；
（3）The raw material of buffer is prepared according to each component configuration of following percentage by weight：Carbon 0.3-0.35%, manganese 1.0-
1.2%, silicon 0.2-0.4%, chromium 0.30-0.50%, molybdenum 0.10-0.15%, nickel≤0.25%, sulphur≤0.06%, phosphorus≤0.05%, surplus
For iron；Then raw material Hybrid Heating melts to 1000-1300 DEG C, then by the pouring metal melt of melting to step（2）Prepare
In arenaceous shell；
（4）No. 2 thermosetting resin pyrolysis devolatilizations of nation Buddhist nun in 0.6-1.5h after the completion of to be cast, arenaceous shell, quartz sand is from condensation
Metal surface be scattered, obtain buffer products.
2. the preparation method of buffer according to claim 1, it is characterised in that：Step（1）Described No. 2 thermosettings of nation Buddhist nun
Property resin usage amount be quartz sand weight 1.5-1.6%.
3. the preparation method of buffer according to claim 1, it is characterised in that：Step（2）The thickness of described arenaceous shell
For 50-70m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510969455.9A CN105506468B (en) | 2015-12-21 | 2015-12-21 | The preparation method of buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510969455.9A CN105506468B (en) | 2015-12-21 | 2015-12-21 | The preparation method of buffer |
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| Publication Number | Publication Date |
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| CN105506468A CN105506468A (en) | 2016-04-20 |
| CN105506468B true CN105506468B (en) | 2017-07-25 |
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| CN110576175A (en) * | 2019-09-29 | 2019-12-17 | 张家港科杰机械装备有限公司 | Production process for chemical castings |
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| CN102094152A (en) * | 2009-12-09 | 2011-06-15 | 宁波金汇精密铸造有限公司 | Train buffer material |
| CN102094112B (en) * | 2009-12-09 | 2012-12-19 | 宁波金汇精密铸造有限公司 | Heat treatment process of alloy steel product |
| CN102094113B (en) * | 2009-12-09 | 2012-10-10 | 宁波金汇精密铸造有限公司 | Heat treatment process of train buffer material |
| CN102756095A (en) * | 2011-04-27 | 2012-10-31 | 陆宝庆 | Casting process of diesel engine |
| CN104001870B (en) * | 2014-04-02 | 2016-06-29 | 杭州萧山之江永磁材料有限公司 | Sand molding method penetrated by alnico magnet |
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