CN105964907A - Hot-core box precoated sand casting technology of motor end cover - Google Patents
Hot-core box precoated sand casting technology of motor end cover Download PDFInfo
- Publication number
- CN105964907A CN105964907A CN201610428741.9A CN201610428741A CN105964907A CN 105964907 A CN105964907 A CN 105964907A CN 201610428741 A CN201610428741 A CN 201610428741A CN 105964907 A CN105964907 A CN 105964907A
- Authority
- CN
- China
- Prior art keywords
- sand
- core
- precoated sand
- hot
- casting
- 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
Links
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
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- 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
-
- 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
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- 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
Abstract
The invention discloses a hot-core box precoated sand casting technology of a motor end cover. The hot-core box precoated sand casting technology comprises the steps that a mould is mounted on a core shooter in place; precoated sand is put in a hot-core box of the core shooter, a precoated sand core is manufactured, and the temperature of the precoated sand core is controlled, wherein raw sand of the precoated sand is formed by mixing quartz sand and chromite sand; the ready-made sand core is taken out, a hot-core box sand core is assembled and mouded, and is pressed by weights, then casting is carried out with the casting temperature being controlled at 1300-1500 degrees; natural cooling is carried out for 1-2h, and casting pieces are taken out after mould splitting. The hot-core box precoated sand casting technology links orderly and commences from the core sand manufacturing aspect, and can reduce defect products caused because the sand core deforms, shrinks and cracks easily through the improvement on the constitutes of the precoated sand. In addition, the use strength of the core sand prepared by the hot-core box precoated sand casting technology can meet the requirements within two weeks, the use cycle of the core sand is prolonged, and the strength of casting pieces is improved. The wall thickness and strength of the motor end cover cast by the hot-core box precoated sand casting technology can completely reach the use requirements.
Description
Technical field
The invention belongs to conventional casting technologies field, particularly relate to a kind of electric motor end cap hot box precoated sand casting
Technique.
Background technology
In recent years occurring in that a kind of hot box precoated sand formative technology, this technique passes through core-shooting device by overlay film
Precoated sand inject in the mould heated, precoated sand by heating reach solidification effect.This kind of casting side
Formula is easily formed assembly line work, and moulding efficiency is high, and the dependence to workman proficiency level is relatively low, is relatively shaped to
This is relatively low, substantially at about 1200 yuan/ton, about moulding efficiency 3 tons of foundry goods/12 hour per capita.Deficiency
Place is that die cavity gas forming amount is too big, and owing to the wall thickness of die cavity is between 15-30mm, the gas that die cavity produces is not
Easily discharging, cause product pore, the casting flaw such as hollow occur, production process is wayward.
Chinese invention patent (CN103990767A) discloses a kind of hot core shell precoated sand formative technology, this work
Skill comprises the following steps successively: core shooting, mould assembling, training sand, vibrations, evacuation, and described core shooting specifically refers to
By hot core shell shell molding machine, hot core shell shell molding machine fixes mould, by nozzle and the mould of hot core shell shell molding machine
Precoated sand is injected in the most heated mould after aligned by the effect of air pressure by the loophole on tool, waits overlay film
Take out after sand hardening, form casting mold blank, control the wall thickness of casting mold blank at 4-5mm；For another example Chinese invention
Patent (CN102896299A) discloses the production technology of a kind of film-covering sand hot corebox method casting thin-walled cooker,
Comprise the following steps: step one, make hot core box mould according to the shape of cooker, mould is taken out negative pressure knot
Structure, and hot core box mould is arranged on core shooter；Step 2, injects hot core box mould, warp by precoated sand
Cross electrical heating and make precoated sand curing molding in hot core box mould；Step 3, after core shooter divides mould, removal is middle
Template, then matched moulds；Step 4, first starts vacuum source after matched moulds, on core shooter, vacuum source takes out negative pressure
While pour into a mould ferrum liquid, in casting process produce gas taken away by vacuum source；Step 5, after foundry goods cooling,
Mould is divided to obtain the thin-walled cooker of molding.But above two hot box precoated sand casting technique all cannot meet electricity
The production requirement of machine end cap.
Summary of the invention
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of electric motor end cap hot box overlay film
Sand casting technique, technique is simple, meets electric motor end cap production requirement.
In order to realize above-mentioned goal of the invention, the present invention by the following technical solutions:
A kind of electric motor end cap hot box precoated sand casting technique, is the most specifically carried out:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 220 DEG C-320 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, wherein said
It is 3-8% that chromite sand accounts for the mass percent of described quartz sand, adds catalyst, mixing in roughing sand
3-5min, shakes out after adding thermosetting resin mixing 3-6min, and described catalyst charge is quartz chiltern
The 0.1-0.3%, the 1.0-2% that addition is quartz sand quality of described thermosetting resin resin of amount；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1300 DEG C-1500 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1-2 hour,
Mould is divided to take out foundry goods.
Further, in step s 102, the granularity of described quartz sand and chromite sand is 50～100 mesh.
Further, in step s 102, constituent and the part by weight thereof of described catalyst is: chlorination
Ammonium 5-10%, ammonium carbonate 10-20%, carbamide 20-35%, deionized water 35-50%.
Further, in step s 102, constituent and the weight ratio thereof of described thermosetting resin is:
Bonding agent 90-95%, reinforcing agent 2-3.5%, peroxide initiator 1.5-5.5%, described vinyl silanes increases
One in strong agent, resin enhancers, silane coupler.
Compared with prior art, provide the benefit that: the technique linking of the present invention is orderly, in terms of core sand making
Set about, by improving the composition of precoated sand, can reduce core because being easily deformed, shrinkage cavity, cracking cause
Bad, the core sand of present invention preparation simultaneously used intensity all to meet requirement in two weeks, extended making of core sand
With the cycle, improve the intensity of foundry goods；The present invention is had to cast the electric motor end cap obtained, wall thickness and intensity complete
Reach to use requirement.
Detailed description of the invention
The most just come electric motor end cap hot box precoated sand casting technique of the present invention by this embodiment be given
Illustrative.
Embodiment 1
A kind of electric motor end cap hot box precoated sand casting technique, is the most specifically carried out:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 320 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, described quartz sand and chromium
The granularity of iron ore is 50～100 mesh, and wherein said chromite sand accounts for the mass percent of described quartz sand
It is 8%, in roughing sand, adds catalyst, mix 5min, shake out after adding thermosetting resin mixing 6min,
Described catalyst charge is the 0.1% of quartz sand quality, and the addition of described thermosetting resin resin is quartz
The 1.0% of chiltern amount；
The constituent of described catalyst and part by weight thereof be: ammonium chloride 10%, ammonium carbonate 20%, carbamide
35%, deionized water 35%；
The constituent of described thermosetting resin and weight ratio thereof be: bonding agent 95%, resin enhancers
5.5%, peroxide initiator 5.5%；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1400 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1 hour,
Mould is divided to take out foundry goods.
Embodiment 2
A kind of electric motor end cap hot box precoated sand casting technique, is the most specifically carried out:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 300 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, described quartz sand and chromium
The granularity of iron ore is 50～100 mesh, and wherein said chromite sand accounts for the mass percent of described quartz sand
It is 4%, in roughing sand, adds catalyst, mix 3min, shake out after adding thermosetting resin mixing 5min,
Described catalyst charge is the 0.2% of quartz sand quality, and the addition of described thermosetting resin resin is quartz
The 1.5% of chiltern amount；
The constituent of described catalyst and part by weight thereof be: ammonium chloride 10%, ammonium carbonate 15%, carbamide
35%, deionized water 40%；
The constituent of described thermosetting resin and weight ratio thereof be: bonding agent 90%, resin enhancers
5%, peroxide initiator 5%；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1400 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1 hour,
Mould is divided to take out foundry goods.
Embodiment 3
A kind of electric motor end cap hot box precoated sand casting technique, is the most specifically carried out:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 250 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, described quartz sand and chromium
The granularity of iron ore is 50～100 mesh, and wherein said chromite sand accounts for the mass percent of described quartz sand
It is 6%, in roughing sand, adds catalyst, mix 3min, shake out after adding thermosetting resin mixing 5min,
Described catalyst charge is the 0.2% of quartz sand quality, and the addition of described thermosetting resin resin is quartz
The 1.8% of chiltern amount；
The constituent of described catalyst and part by weight thereof be: ammonium chloride 8%, ammonium carbonate 10%, carbamide 35%,
Deionized water 47%；
The constituent of described thermosetting resin and weight ratio thereof be: bonding agent 93%, resin enhancers
3%, peroxide initiator 4%；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1400 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1 hour,
Mould is divided to take out foundry goods.
Embodiment 4
A kind of electric motor end cap hot box precoated sand casting technique, is the most specifically carried out:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 220 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, described quartz sand and chromium
The granularity of iron ore is 50～100 mesh, and wherein said chromite sand accounts for the mass percent of described quartz sand
It is 8%, in roughing sand, adds catalyst, mix 3min, shake out after adding thermosetting resin mixing 5min,
Described catalyst charge is the 0.3% of quartz sand quality, and the addition of described thermosetting resin resin is quartz
The 2% of chiltern amount；
The constituent of described catalyst and part by weight thereof be: ammonium chloride 10%, ammonium carbonate 15%, carbamide
35%, deionized water 40%；
The constituent of described thermosetting resin and weight ratio thereof be: bonding agent 90%, resin enhancers
5%, peroxide initiator 5%；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1400 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1 hour,
Mould is divided to take out foundry goods.
Embodiment 5
A kind of electric motor end cap hot box precoated sand casting technique, is the most specifically carried out:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 320 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, described quartz sand and chromium
The granularity of iron ore is 50～100 mesh, and wherein said chromite sand accounts for the mass percent of described quartz sand
It is 5%, in roughing sand, adds catalyst, mix 3min, shake out after adding thermosetting resin mixing 5min,
Described catalyst charge is the 0.3% of quartz sand quality, and the addition of described thermosetting resin resin is quartz
The 1.5% of chiltern amount；
The constituent of described catalyst and part by weight thereof be: ammonium chloride 5%, ammonium carbonate 20%, carbamide 35%,
Deionized water 40%；
The constituent of described thermosetting resin and weight ratio thereof be: bonding agent 92%, resin enhancers
5%, peroxide initiator 3%；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1400 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1 hour,
Mould is divided to take out foundry goods.
Claims (4)
1. an electric motor end cap hot box precoated sand casting technique, it is characterised in that the most specifically enter
OK:
Step S101, being arranged on core shooter by mould, installation puts in place；
Step S102, precoated sand is loaded in core shooter hot box, make precoated sand core, core temperature control
System is at 220 DEG C-320 DEG C, and wherein the roughing sand of precoated sand is mixed by quartz sand and chromite sand, wherein said
It is 3-8% that chromite sand accounts for the mass percent of described quartz sand, adds catalyst, mixing in roughing sand
3-5min, shakes out after adding thermosetting resin mixing 3-6min, and described catalyst charge is quartz chiltern
The 0.1-0.3%, the 1.0-2% that addition is quartz sand quality of described thermosetting resin resin of amount；
Step S103, the core taking-up that will make, hot box assembly of sand core molding also presses with foundary weight, then
Casting, cast temperature controls at 1300 DEG C-1500 DEG C；
Step S104, to casting after electric motor end cap foundry goods carry out natural cooling, cool time is 1-2 hour,
Mould is divided to take out foundry goods.
Electric motor end cap hot box precoated sand casting technique the most according to claim 1, it is characterised in that
In step s 102, the granularity of described quartz sand and chromite sand is 50～100 mesh.
Electric motor end cap hot box precoated sand casting technique the most according to claim 1 and 2, its feature exists
In, in step s 102, the constituent of described catalyst and part by weight thereof be: ammonium chloride 5-10%,
Ammonium carbonate 10-20%, carbamide 20-35%, deionized water 35-50%.
Electric motor end cap hot box precoated sand casting technique the most according to claim 1 and 2, its feature exists
In, in step s 102, the constituent of described thermosetting resin and weight ratio thereof be: bonding agent
90-95%, reinforcing agent 2-3.5%, peroxide initiator 1.5-5.5%, described vinyl silanes reinforcing agent,
One in resin enhancers, silane coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610428741.9A CN105964907A (en) | 2016-06-15 | 2016-06-15 | Hot-core box precoated sand casting technology of motor end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610428741.9A CN105964907A (en) | 2016-06-15 | 2016-06-15 | Hot-core box precoated sand casting technology of motor end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105964907A true CN105964907A (en) | 2016-09-28 |
Family
ID=57021882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610428741.9A Pending CN105964907A (en) | 2016-06-15 | 2016-06-15 | Hot-core box precoated sand casting technology of motor end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105964907A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913974A (en) * | 2017-12-06 | 2018-04-17 | 北京仁创砂业科技有限公司 | A kind of steel-casting precoated sand and preparation method thereof |
| CN108262440A (en) * | 2018-04-11 | 2018-07-10 | 苏州勤堡精密机械有限公司 | The mixture core sand of high heat-resistant high-strength low bulk |
| CN110434291A (en) * | 2019-09-04 | 2019-11-12 | 重庆新红旗缸盖制造有限公司 | A kind of sand core production method |
| CN111136223A (en) * | 2020-01-07 | 2020-05-12 | 浙江精恒铜业股份有限公司 | Impeller casting process method |
| CN111511140A (en) * | 2020-05-09 | 2020-08-07 | 安徽省含山县林头振皖铸造厂 | Low-pressure explosion-proof integrated end cover and manufacturing process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003019542A (en) * | 2001-07-03 | 2003-01-21 | Toyota Central Res & Dev Lab Inc | Method for producing mold for casting |
| CN102974759A (en) * | 2012-11-28 | 2013-03-20 | 天津市宁河县鑫发工贸有限公司 | Pre-coated sand hot core box casting process of small and medium-sized precise parts |
| CN103084541A (en) * | 2013-01-31 | 2013-05-08 | 贵州英吉尔机械制造有限公司 | Forming technology of air cylinder cover casting |
| CN103252444A (en) * | 2013-04-25 | 2013-08-21 | 吴江市液铸液压件铸造有限公司 | Hot-box method-based core sand preparation process for core preparation |
| CN105478677A (en) * | 2015-12-01 | 2016-04-13 | 济南方德利模具有限公司 | Casting technology of engine cylinder cover and core assembling structure |
| CN105583362A (en) * | 2016-02-19 | 2016-05-18 | 无锡市凯杰铸造有限公司 | Casting method for producing steel casting through precoated sand |
-
2016
- 2016-06-15 CN CN201610428741.9A patent/CN105964907A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003019542A (en) * | 2001-07-03 | 2003-01-21 | Toyota Central Res & Dev Lab Inc | Method for producing mold for casting |
| CN102974759A (en) * | 2012-11-28 | 2013-03-20 | 天津市宁河县鑫发工贸有限公司 | Pre-coated sand hot core box casting process of small and medium-sized precise parts |
| CN103084541A (en) * | 2013-01-31 | 2013-05-08 | 贵州英吉尔机械制造有限公司 | Forming technology of air cylinder cover casting |
| CN103252444A (en) * | 2013-04-25 | 2013-08-21 | 吴江市液铸液压件铸造有限公司 | Hot-box method-based core sand preparation process for core preparation |
| CN105478677A (en) * | 2015-12-01 | 2016-04-13 | 济南方德利模具有限公司 | Casting technology of engine cylinder cover and core assembling structure |
| CN105583362A (en) * | 2016-02-19 | 2016-05-18 | 无锡市凯杰铸造有限公司 | Casting method for producing steel casting through precoated sand |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913974A (en) * | 2017-12-06 | 2018-04-17 | 北京仁创砂业科技有限公司 | A kind of steel-casting precoated sand and preparation method thereof |
| CN108262440A (en) * | 2018-04-11 | 2018-07-10 | 苏州勤堡精密机械有限公司 | The mixture core sand of high heat-resistant high-strength low bulk |
| CN110434291A (en) * | 2019-09-04 | 2019-11-12 | 重庆新红旗缸盖制造有限公司 | A kind of sand core production method |
| CN111136223A (en) * | 2020-01-07 | 2020-05-12 | 浙江精恒铜业股份有限公司 | Impeller casting process method |
| CN111511140A (en) * | 2020-05-09 | 2020-08-07 | 安徽省含山县林头振皖铸造厂 | Low-pressure explosion-proof integrated end cover and manufacturing process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105964907A (en) | Hot-core box precoated sand casting technology of motor end cover | |
| CN103691890B (en) | The core-making method of cylinder cap rising head oil passage sand core processed and cylinder cap casting method | |
| CN106222534B (en) | A kind of casting technique of magnesium iron box casting | |
| CN101992265B (en) | Method for manufacturing resin casting die used for modeling sodium silicate self-hardening sand | |
| CN101569921A (en) | Casting technique for manufacturing mold core by using resin sand | |
| CN101637803B (en) | Casting method of wheelside speed reducer casing | |
| CN102921902A (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
| CN107716872A (en) | A kind of casting method of large-scale working ways | |
| CN105478667B (en) | A kind of production method of water-jacket typ exhaust manifold casting sand type | |
| CN108296441A (en) | A kind of hot core box mould and sand core forming method extending film covered sand core exhaust passage | |
| CN105414488A (en) | Manufacturing method of flowing channel core of turbine housing | |
| CN108202131A (en) | The casting technique of turbocharger housing | |
| CN102125980A (en) | Casting moulding process for preparing large ship propeller from synthetic resin | |
| CN104550715A (en) | Method for manufacturing integral casting metal mould | |
| CN103949584B (en) | The sand mould casting method of the 22nd grade of stator blade is pressed in H level combination circulation steam turbine | |
| CN103056306A (en) | Method for casting bearing seat | |
| CN102294461A (en) | Method for producing nodular cast iron automobile differential shell through vacuum (V) casting and V mould | |
| CN203875291U (en) | Exhaust manifold casting mold | |
| CN104907500A (en) | Nut casting processing method | |
| CN202984578U (en) | Cylinder cover casting die | |
| CN104785728A (en) | Gear casting processing method | |
| CN104785758B (en) | The preparation method of aluminium bronze composite casting valve plate | |
| CN104858364B (en) | Cover the preparation method of arenaceous shell type tin bronze composite casting valve plate | |
| CN207914537U (en) | A kind of profile-followed hot core box mould for extending film covered sand core exhaust passage | |
| CN103075274B (en) | Air inlet mixer and casting process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160928 |
|
| WD01 | Invention patent application deemed withdrawn after publication |