CN1124710A - Technique for producing angle part of container - Google Patents
Technique for producing angle part of container Download PDFInfo
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- CN1124710A CN1124710A CN 93114030 CN93114030A CN1124710A CN 1124710 A CN1124710 A CN 1124710A CN 93114030 CN93114030 CN 93114030 CN 93114030 A CN93114030 A CN 93114030A CN 1124710 A CN1124710 A CN 1124710A
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- sand
- core
- shell
- mould
- metal paattern
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Abstract
The technology for producing corner part of container features use of metal mould and sand mould instead of paraffine mould, and includes such steps as processing raw sand, making metal mould, sand moulding, baking, mould combination, and casting. Its advantages are simple process, high finished product rate and low cost.
Description
The present invention relates to a kind of manufacturing technique method of container angle of technical field of traffic transportation.
The production of freight container be unable to do without corner fittings, and corner fittings is an important foundry goods of producing freight container, and its highly versatile, the 5t of the existing production of China, 10t, the employed corner fittings of 20t freight container all are unified sizes.For many years, the production of corner fittings all adopts the paraffin fusible pattern molding to form, but the paraffin fusible pattern molding exist a lot of shortcomings as:
(1) production cycle is long, the production technology of paraffin fusible pattern generally all will be passed through: preparation mould material-pressing mold-repair a die-module assembling-cure process-system shell-demoulding processing-shell roasting-multiple working procedures such as insulation casting, as small batch production, routinely above operation is all finished, then needed just can finish in 2-3 days, then need a lot of people's parallel workings if produce in enormous quantities, thereby production efficiency is low.
(2) productive costs height.At first will do the fusible alloy pressing mold with the paraffin fusible pattern molding, productive output greatly then needs many group pressing molds, and it is essential with noble metal tin and bismuth to make pressing mold, and the market price of tin and bismuth all more than ten thousand yuan/ton.And the price of its employed main material paraffin and stearic acid is also more than 4,000 yuan/ton, and the price of the quarz sand that the system shell is used also is not less than 500 yuan/ton, and can not reclaim or be difficult to and reclaim, so the price of paraffin fusible pattern molding is at 8-10 yuan/kilograms.Because price height, the reusability of various main consumable materials are low, therefore, the productive costs height.
(3) production process is many, complex process, the production technology more complicated that yield rate is low, the paraffin fusible pattern is made, moulding from the batching of paraffin to wax-pattern is especially made one on shell and is just divided multiple working procedure with regard to three, four procedures, wants to guarantee that it is impossible that the per pass operation is all finished flawlessly.Therefore, its disadvantage is exactly that yield rate is low, and general yield rate is about 60-85%.
(4) production environment requires height, and unstable product quality, the sharpest edges of paraffin fusible pattern molding are exactly that weight is little, and difficult processing is complex-shaped, the foundry goods that accuracy requirement is high.And heavily about 12 kilograms of container angle, belong to medium foundry goods, and simple shape, face area is big, if guarantee product design with the paraffin fusible pattern molding, so, the temperature of workshop should be strict controlled in about in the of 20 ℃, as far as we know, domestic such manufacturer is also seldom therefore higher and when hanging down when temperature, and especially summer, pressure-formed wax-pattern will produce distortion, foundry goods physical dimension that distortion then produces is arranged with regard to nonconformity, the paraffin fusible pattern molding has just lost sharpest edges, and product design just is difficult to guaranteed.
(5) production is low with the degree of utilization again of material, and the main consumable material of paraffin fusible pattern molding is paraffin, stearic acid and quartz material, though paraffin can reclaim, but under the effect of stearic acid, just lose original performance after the use, paraffin is become fragile, rotten and can't use.Quartz material is the main material of system shell, also is can not be multiplexing behind the one-shot usage basically, and this also is the high key factor of productive costs
The object of the present invention is to provide a kind of process of producing container angle, make with short production cyclely, productive costs is low, production technology is simple, operation is few, yield rate is high, less demanding to production environment, product design is guaranteed, produces the height of degree of utilization again of consumable material.
The object of the present invention is achieved like this:
In the production of container angle, the production method that has adopted metal paattern sand mold new process to replace the paraffin fusible pattern to make.
Concrete technology is: the manufacturing-moulding of roughing sand processing-metal paattern, core technology-oven dry-group type and casting.
The present invention is further described below in conjunction with drawings and Examples:
One, the selection of core sand, higher according to the roughness of surface requirement of corner fittings than the requirement of common sand foundry goods, the silicon dioxide (sio of roughing sand
2) content must be more than 97%, to guarantee the refractoriness of sand mold.The sand that reaches " lotus flower " sand field through test Changsha " Ping Tang " compares eligible, and the granularity of roughing sand should be in 70-140 order scopes.The granularity of roughing sand is excessive, can influence the roughness of surface of foundry goods; Too small then foundry goods easily produces pore, sand holes, and the intensity of sand mold reduces.
Two, roughing sand is handled:
1, after roughing sand enters factory, should carry out drying before use and handle, its aqueous ingredients is lower than below 0.5%.
2, sodium silicate; Promptly use natrium carbonate (Na
2CO
3) and silica sand (sio
2) the chemicals sodium silicate aqueous solution that burns till.Spring and autumn, the sky was with modulus 2.2-2.5; Use modulus 2.0-2.4 summer, general concentration Be48 °-50 ° is suitable.
3, potter's clay; Claim amargosite again, generally the potter's clay that produces with Black Hills, Liaoning is best, and its colloid is situated between more than 90%
More than three kinds of raw and processed materials be basic consumable material, then through the edge mill system of mixing, promptly add roughing sand earlier, evenly stir the back and add 6-9% sodium silicate, core sand can be mixed in 8-10 minutes.As mixing outer molding sand, its technology is to add roughing sand earlier, adds sodium silicate 6-10% again, and mixed grind 2-3 minutes added potter's clay 1-2% mixed grind 8-10 minutes, i.e. mouldable again
Three. the metal paattern manufacturing
Earlier cun add surplus by drawing institute slide rule and make wooden model, sand mo(u)ld is watered after with the silicon-aluminum fusing in the back, after machinework, makes the metal paattern of corner fittings, and requiring roughness of surface is 0.8- 3.2, stops amount of contraction, and type, core accurate positioning do not have the gap behind the mould assembly.
Four, moulding, core technology
Up-to-standard metal paattern is combined, mixed sand is placed in the type, tamping is smash tightly, uses the instrument smoothing, and equating guarantees that the sand mold surfacing is smooth.Then require after sand mold is made, to be blown into curing for core, generally be as the criterion with feel with carbon dioxide.It is oversize that gas is blown into the time, and core sand is harder, removes but metal mold is bad; Time, too short then core sand did not solidify, and should change the time of being blown into according to weather condition among the operator.
See accompanying drawing: accompanying drawing 1 is metal paattern sand mold core scheme drawing.
Accompanying drawing 2 is a metal paattern sand mold shell scheme drawing.
Accompanying drawing 3 waters figure for string behind the core shell group type
Accompanying drawing 4 is a cast steel corner fittings constructional drawing
Among the figure: 1, core mould shell, 2, sand core, 3, right template, 4, go up the levorotation plate, 5, go up right template, 6, the back template, 7, preceding template, 8, the levorotation plate, 9, the investment shell intracavity mould, 10, shell shell model, 11, coattail board, 12, the shell sand mold, 13, rear pattern plate, 14, cast gate template, 15, closure plate, 16, the cast gate base.
(1) model structure of core and operation principle:
As shown in Figure 1: because core has disapproved pattern draft, there is circular arc at the place, angle. Core print Requirement must when making central layer, reach above-listed requirement, shell plays a template fixed bit Put, and the purpose of moulding,
Method of operating; Template is put into shell in the position in accordance with regulations, tamping after the sand loading, punching two Carbonoxide gas is tachy steroled, and is then downward for mouth the type upset, core mould shell 1, mention, Order is removed rear template 6, levorotation plate 8, front template 7, right template 3, upper levorotation then Plate 4, upper right template 5. Namely caused needed core.
Make and require: (1) presses the drawing physical dimension increases by 1.75% amount of contraction, design The each several part size.
(2) pattern draft of template is 0.5 degree
(3) the core print part is divided into two parts, and a part is the wall thickness in hole, is forbidden to have tiltedly Degree, another part can be more greatly for fixing core print gradient, thereby must process with special tool.
(4) in order to reach wear-resisting purpose, mould is all manufactured with alloy aluminum
(2) model structure of shell and operation principle:
As shown in Figure 2; Because the rear portion of sand mold shell, the bottom when being cast is not filled and is permitted Gradient, thus pattern draft guaranteed with rear pattern plate, and the perpendicularity of shell, the die cavity back is Label location so reach parallel purpose of retiring with coattail board, waters in order to go here and there, and the front adds waters Mouth template.
Method of operating: pack coattail board 11 on the investment shell intracavity mould 9 (1), puts into In the shell shell model 10, again rear pattern plate 13, cast gate template 14 is packed into outside the shell Shell model 10 interior positions.
(2) after sand loading, the tamping, upset is pinned coattail board 11 and is upwards carried investment shell intracavity mould 9 on the holder template
(3) coattail board 11 is upwards taken out after the translation forward, mentioned shell shell model 10 then
(4) rear pattern plate 13 of taking away, cast gate template 14 promptly obtains shell sand mold 12.
Make and require: (1) adds 1.75% by the drawing physical dimension, design inner chamber chi
(2) core print will stay 0.3-0.5mm gap than the design of core core print.
(3) the sand mold shell is when design, and thinnest part must not be lower than 30mm.
(4) the inboard too light that are difficult for of shell periostracum tool 10 generally reach 12.5 for well.Investment shell intracavity mould 9 requires smooth, generally reaches 1.6.For good.
(5) coattail board 4 mould gradients must not surpass 0.5 degree.
(6) in order to reach accurate size, and wear-resisting, require to manufacture with alloy aluminum.
(3) assembling of sand mold:
(1) core is packed in the shell,,, form the spatial mode of corner fittings, benefit core print breach as the bottom surface by the support leaving space and the depth difference of core and shell of core print
(2) stack-mounted sand mold such as Fig. 3 are erected, row is tight one by one, and an end is put cast gate base 16, an end is put closure plate 15, holds out against just pourable.
(3) cast after through sand removal, cut cast gate, obtain casting corner fittings as shown in Figure 4.
Five, oven dry
In order to make the sand core of making fully dry, increase the dry strength of core, the continuity of speed production just must be carried out artificial drying, and general drying oven all can, time 1-2 hour, it is best that bake out temperature is 200-250 °, is incubated 1 hour, and the sand mold core is parched, if sand mold can reach the desired strength temperature and cross lowly or too high, sand hardness all will be affected.
Six, group type and casting.
The group type is that the outer sand mold and the core of will dry combine, and forms a casting space, so the characteristics of answering are noted.
1. check the damaged situation of sand mold, planeness of healing up and cleaning residual are at the floating sand of die cavity.
2, the face of healing up should be polished during core down,, put correctly, check the wall thickness situation down to the position.
3, a plurality of sand molds should be placed on the casting platform, form string and water.Should be seamless during amalgamation between type and the type, and two ends will compress, the face of running jointly is husky stifled tight with sodium silicate, and junner bush is put at one end promptly pourable.
When 4, casting, should make molten steel evenly and reposefully flow into die cavity, can not interrupt in case slag flows in the die cavity.
The method with metal pattern sand casting production corner fittings that facts have proved has the following advantages.
(1) with short production cycle.
The production technology of metal pattern sand casting is: roughing sand processing-manufacturing mold core-oven dry-group Mould-casting. Compare with paraffin model casting operation shortened nearly 1/2, generally speaking all But be moulding on duty just casting forming on duty, the production efficiency height.
(2) production cost is low.
Because the employed main consumable material of metal paattern sand casting process: roughing sand is dozens of yuan/ton, and sodium silicate is 4 yuan/kilogram, and operation is simple, the capacity rating height.So compare about 1/2 of the cost that has only it with the paraffin fusible pattern
(3) production technology is simple, operation is few, cost rate is high
The production process of metal paattern sand casting process has only the 1/2 left and right of paraffin fusible pattern molding operation, the operator can support according to formula rate and hold, each procedure is skilled problem, and sand mold all passes through the pouring of oven dry back, so yield rate exceeds about 10-15% than paraffin fusible pattern molding yield rate.
(4) less demanding to production environment, product design is guaranteed.
New improved metal paattern sand casting process technology is on the basis of sand casting, so it does not need very special environmental requirement, and original hand molding place gets final product, and is not subjected to the influence of temperature Change.Especially modification not after the sand mold drying of making, hardness height, the product that makes production are in geometric configuration, and dimensions limit etc. qualitatively can be guaranteed.
(5) height of degree of utilization again of production consumable material.
Through the used old sand of casting, remaining molding sand can wash with water except that part is burnt, and the method for oven dry is reused; Can sell construction unit as not satisfying the requirements and use, its percent recovery is 30-40% left and right former value.Because the main material degree of utilization height after using makes productive costs reduce greatly.
The use advantage of metal paattern sand casting process on container angle surpassed the paraffin fusible pattern molding with comparative analysis as can be seen by last, and the corner fittings that valency of fine quality is low will capture freight container market.
Claims (3)
1, a kind of new process of producing container angle is characterized in that: adopted metal paattern sand mold new process to make corner fittings, its concrete technology is: the manufacturing-moulding of roughing sand processing-metal paattern, core technology-oven dry-group type and casting.
2, method according to claim 1, it is characterized in that: the metal paattern manufacturing should add surplus by drawing institute dimensioning earlier and make wooden model, sand mo(u)ld is watered after machinework after dissolving with silicon-aluminum in the back, the roughness of surface of corner fittings metal paattern is 0.8- 3.2, stop amount of contraction, the core accurate positioning does not have the gap behind the mould assembly.
3, method according to claim 1 is characterized in that; It is best that drying time 1-2 hours, bake out temperature are 200-250 ℃, is incubated 1 hour
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114030 CN1124710A (en) | 1993-11-13 | 1993-11-13 | Technique for producing angle part of container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114030 CN1124710A (en) | 1993-11-13 | 1993-11-13 | Technique for producing angle part of container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1124710A true CN1124710A (en) | 1996-06-19 |
Family
ID=4990348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93114030 Pending CN1124710A (en) | 1993-11-13 | 1993-11-13 | Technique for producing angle part of container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1124710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803129A (en) * | 2014-03-18 | 2015-07-29 | 中集集团集装箱控股有限公司 | Container and casting method of container corner posts |
| CN109398985A (en) * | 2018-11-17 | 2019-03-01 | 张家港市隆德锻压件厂 | A kind of split type container angle and its manufacturing process |
-
1993
- 1993-11-13 CN CN 93114030 patent/CN1124710A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803129A (en) * | 2014-03-18 | 2015-07-29 | 中集集团集装箱控股有限公司 | Container and casting method of container corner posts |
| CN109398985A (en) * | 2018-11-17 | 2019-03-01 | 张家港市隆德锻压件厂 | A kind of split type container angle and its manufacturing process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |