CN102430700A

CN102430700A - Method for single box casting of glass mold copper alloy bottom mold by rein sand

Info

Publication number: CN102430700A
Application number: CN2011103971988A
Authority: CN
Inventors: 戈剑鸣
Original assignee: ORI MOULD TECHNOLOGY (SUZHOU) Co Ltd
Current assignee: ORI MOULD TECHNOLOGY (SUZHOU) Co Ltd
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-05-02

Abstract

The invention relates to a method for single box casting of a glass mold copper alloy bottom mold by rein sand, which belongs to the field of glass mold manufacture and comprises the following steps that: a wood model bottom plate with a model bottom mold, a pouring opening mold, a transverse pouring passage mold and a filtering net mold is made; a sectional frame is covered and arranged onto the wood model bottom plate, and in addition, the resin sand is filled into an accommodation cavity of the sectional frame; the wood model bottom plate and the sectional frame filled with the resin sand are turned for 180 degrees, the wood model bottom plate and the sectional frame are removed to obtain a casting mold, and a filter net is placed into a filtering net cavity; a cold iron cover plate is plated onto each cold iron cavity; and the molten copper is poured from the pouring opening, the molten copper pouring is stopped when the liquid level of the molten copper is the same as the pouring phase, the cold iron cover plate and the rein sand are removed after the cooling, and three glass mold copper alloy bottom molds are obtained. The method has the advantages that an entity dead head and a vertical pouring passage are omitted, a transverse pouring passage is shortened, the clamping slag abandonment is reduced, the utilization rate of the molten copper is improved, the efficiency and the blank qualification rate are high, and the surface smoothness of blanks is improved.

Description

Method by resin sand single box cast glass mould copper alloy bed die

Technical field

The invention belongs to glass mold manufacturing technology field, be specifically related to a kind of method by resin sand single box cast glass mould copper alloy bed die

Background technology

are like the reason of glass mold casting industry technical staff institute; At present casting is adopted for glass mold copper alloy bed die all is that green-sand and for upper, middle and lower three-cavity moulding technology (does not adopt the bottom injection mode; Copper water flows into more steady, can not produce and splash), wherein top box is running channel, rising head and the cast gate composition of foundry goods; And raising middle flask is the formed die cavity of founding at the bottom of the copper mold, and nowel then is that cross gate, screen pack and the ingate of foundry goods formed.The upper, middle and lower three-cavity moulding causes production efficiency low; And be limited by the sandbox size; Can only cast a copper alloy bed die general one the case; Because the too long copper water over oxidation generation secondary slag that causes of running gate system causes slag inclusion to scrap, increase the manufacturing cost of mould simultaneously, wasted the raw material and the energy.Simultaneously when hand moulding, because out-of-flatness and sand bond cause copper water when cast, to expose from the space between the sandbox causing runout to scrap inadequately between the sandbox, or because foundary weight is pressed to such an extent that unreal causing lifted case and scrapped.

change although glass mold industry practitioner has also recognized existing defective of above-mentioned technology and serious hope to some extent; But; Above-mentioned technology is the technology that is acknowledged as comparative maturity that is handed down recent decades, in order not bear owing to the risk that innovative technology brought, therefore indulges the courage that the hope that innovation is arranged is also implemented innovation; Particularly in existing disclosed domestic and international patent documentation and non-patent literature, all be not seen in the good plan of corresponding techniques improvement.Especially in disclosed patent and non-patent literature, all do not disclose the teachings that once can obtain a plurality of bed dies; For this reason; The applicant has passed through time consuming exploration and trial; Finally found the good plan of dealing with problems, the technical scheme that will introduce below produces under this background

Summary of the invention

task of the present invention is to provide a kind of method by resin sand single box cast glass mould copper alloy bed die; This method not only can improve the copper water use efficiency; The secondary slag that minimizing copper water over oxidation causes is scrapped; Improve the yield rate of copper alloy bed die; And can prevent and avoid owing to produce during hand moulding lift case, runout is scrapped, can also improve the surface smoothness of glass mold copper alloy bed die blank in addition and can once obtain a plurality of bed dies and enhance productivity significantly.

task of the present invention is to accomplish like this; A kind of method by resin sand single box cast glass mould copper alloy bed die; This method at first produce according to copper alloy bed die blank dimension have the mould bed die, the wooden mold base plate of gating pattern, cross gate mould and screen pack mould, wherein, the quantity of mould bed die is three; The quantity of cross gate mould is similarly three, and is connected with the mould bed die; Then, the type mask is put on the wooden mold base plate, and in the cavity volume of type frame, inserted resin sand; Then; The wooden mold base plate is overturn 180 ° together with the type frame of inserting resin sand; And remove the wooden mold base plate and remove the type frame, obtain having chamber, cast gate, cross gate, screen pack chamber at the bottom of three moulds, emit the casting mold in oral cavity and chill chamber, and screen pack is placed the screen pack chamber; Wherein, cross gate is with chamber at the bottom of the mould and emit the oral cavity to communicate; Then on each chill chamber, place the chill cover plate; Copper water with fusion pours into from cast gate at last; Emit the oral cavity through the screen pack entering; And then warp with emit oral cavity and mould at the bottom of the cross gate that communicates of chamber get at the bottom of the mould in the chamber; The liquid level line of treating copper water reaches stopping to pour into copper water when watering corresponding to level height, and after cooling, removes the chill cover plate and remove resin sand, obtains having the glass mold copper alloy bed die of three quantity.

in a concrete embodiment of the present invention, described screen pack is a foam ceramic filter.

In another concrete embodiment of the present invention, described resin sand is made up of the raw material of following parts by weight : quartz sand 98.5-99 part, hybrid resin 1-1.5 part.

In another concrete embodiment of the present invention, described hybrid resin is made up of the raw material of following parts by weight : phenolic resins 50-60 part, polyisocyanate resin 40-50 part, catalyst 0.312-0.464 part.

in another concrete embodiment of the present invention, described phenolic resins is 1600 type phenolic resins.

also have among the concrete embodiment of the present invention, and described polyisocyanate resin is 2670 type polyisocyanate resins.

are more of the present invention and among concrete embodiment, described catalyst is 3500 catalyst series.

technical scheme provided by the invention only need be used single case and need not as prior art, to use upper, middle and lower three casees; And saved entity rising head and sprue, shortened cross gate; Reduce copper water and air oxidation and generated the slag inclusion that the secondary slag causes and scrap, also improved the utilization rate of copper water simultaneously; Owing to need not to use three-cavity moulding, thus efficient relatively after technology can improve more than three times, and occur can hand moulding not occur the time lift case, runout is scrapped, and has improved the qualification rate of blank; Adopt resin sand as moulding sand, because intensity is high, an actor's rendering of an operatic tune smooth surface can significantly be improved the surface smoothness of blank.

Description of drawings

Fig. 1 is the sketch map of the wooden mold base plate of the inventive method.

Fig. 2 has chamber, cast gate, cross gate, screen pack chamber at the bottom of three moulds, emits the sketch map of the casting mold in oral cavity and chill chamber for what the inventive method obtained.

Fig. 3 is the sketch map during to casting-up copper water.

The specific embodiment

Embodiment 1:

Fig. 1 to Fig. 3 is asked for an interview in .The blank drawing paper size requirement of the glass mold copper alloy bed die that at first provides according to the user; The wooden model base plate 1 that has three mould bed dies 11, gating pattern 12, three cross gate moulds 13, a screen pack mould 14 and a rising head mould 15 by wooden model workman processing; Wherein three mould bed dies 11 and a gating pattern 12 distribute around rising head mould 15; Connected between rising head mould 15 and each mould bed die 11 by cross gate mould 13, concrete is illustrated by Fig. 1; Then the type mask is put on the wooden model base plate 1, and in the cavity volume of type frame, inserted resin sand.Resin sand is that the raw material by following parts by weight constitutes: 98.5 parts of quartz sands; 1.5 parts of hybrid resins; Quartz sand and hybrid resin are mixed, wherein: hybrid resin by following by weight than and be that 55 parts in 1600 type phenolic resins, the trade mark are that 2,670 44.65 parts of the type polyisocyanate resins and the trade mark are pepset (send general) 3500 catalyst series formations by the Jiangsu Province Changzhou Ya Shilan modern chemical industry Co., Ltd production and sales trade mark; Then; After treating that resin sand is inserted the interior about 3-4min (hardening time) of cavity volume of type frame; Wooden mold base plate 1 is taken (together with) insert 180 ° of the type frame upsets of resin sand; Be transplanted on the production line of casting working region; And remove and promptly slough wooden mold base plate 1 and slough type frame (also claiming sandbox); Obtain by shown in Figure 2 having chamber 111, cast gate 121, cross gate 131, screen pack chamber 141 at the bottom of three moulds, emit the casting mold in oral cavity 151 and chill chamber 161, and will by Fig. 1 signal and for the screen pack 1411 of ceramic material places screen pack chamber 141, then to chamber 111, cast gate 121, cross gate 131, screen pack chamber 141 at the bottom of the aforesaid mould, emit oral cavity 151 and chill chamber 161 interior fine sands to clean out; Then, before cast, the chill cover plate of cleaning out in advance 2 is placed in the chill chamber 116; At last; The copper water of fusion is poured into from the cast gate 121 by Fig. 2 and Fig. 3 signal; Treat copper water be injected into mould through screen pack 1411, after emitting oral cavity 151 and cross gate 131 at the bottom of in the chamber, the liquid level line of treating copper water stops to pour into copper water when being in the degree consistent with cast gate 121, after cooling (cooling off naturally); Remove chill cover plate 2 and remove resin sand, obtain three glass mold copper alloy bed dies.

Embodiment 2:

The parts by weight that only will constitute the quartz sand of resin sand change 99 parts of parts by weight with hybrid resin into and change 1 part into; Change the parts by weight of the phenolic resins that constitutes hybrid resin into parts by weight that 50.58 parts, the parts by weight of polyisocyanate resin change 48.96 parts and catalyst into and change 0.46 part into, all the other are all with the description to embodiment 1.

Embodiment 3:

only will constitute the quartz sand of resin sand and the parts by weight of hybrid resin change 98.75 parts and 1.25 parts respectively into; Change the parts by weight of the phenolic resins, polyisocyanate resin and the catalyst that constitute hybrid resin into 59.4 parts, 40.288 parts and 0.312 part respectively, all the other are all with the description to embodiment 1.

Embodiment 4:

only will constitute the quartz sand of resin sand and the parts by weight of hybrid resin change 98.8 parts and 1.2 parts respectively into; Change the parts by weight of the phenolic resins, polyisocyanate resin and the catalyst that constitute hybrid resin into 50 parts, 49.7 parts and 0.3 part respectively, all the other are all with the description to embodiment 1.

in sum; Technical scheme provided by the invention has overcome the technological prejudice in the prior art; Audaciously with upper, middle and lower case improvement for having only single case, and, shortened the length of cross gate owing to be single case so need do not use the entity rising head; Reduce the contact of copper water and air and generated the phenomenon that the secondary slag causes slag inclusion to scrap; Improved the utilization rate (more than 60%) and the integrated yield of copper water, the consumption of moulding sand greatly reduces and the corresponding minimizing of processing step, has not only practiced thrift material but also has practiced thrift the energy.Because the present invention does not have the casting technique of sprue, reduction cross gate for single case; Therefore long-time the contact with air of the copper water that does not exist prior art to exist generates the phenomenon that the secondary slag causes slag inclusion to scrap; Simultaneously, owing to adopted the formative technology in a mould three chambeies, compare a mould one chamber of prior art or the prior art of a mould two chambeies and employing three-cavity moulding; Production efficiency has improved more than three times, and this has practiced thrift cost for enterprise virtually.Use phenolic sand molding, can utilize the resin sand advantages of high strength, the time copper mold bottom surface finish of casting the out raising of being arrived very much

Claims

1. a kind of method by resin sand single box cast glass mould copper alloy bed die; It is characterized in that this method at first produce according to copper alloy bed die blank dimension have mould bed die (11), the wooden mold base plate (1) of gating pattern (12), cross gate mould (13) and screen pack mould (14); Wherein, The quantity of mould bed die (11) is three, and the quantity of cross gate mould (13) is similarly three, and is connected with mould bed die (11); Then, the type mask is put on the wooden mold base plate (1), and in the cavity volume of type frame, inserted resin sand; Then; Wooden mold base plate (1) is overturn 180 ° together with the type frame of inserting resin sand; And remove wooden mold base plate (1) and remove the type frame, obtain having chamber (111) at the bottom of three moulds, cast gate (121), cross gate (131), screen pack chamber (141), emit the casting mold of oral cavity (151) and chill chamber (161), and screen pack (1411) is placed screen pack chamber (141); Wherein, cross gate (131) is with chamber at the bottom of the mould (111) and emit oral cavity (151) to communicate; Then go up and place chill cover plate (2) in each chill chamber (161); Copper water with fusion pours into from cast gate (121) at last; Emit oral cavity (151) through screen pack (1411) entering; And then warp with emit oral cavity (151) and mould at the bottom of the cross gate (131) that communicates of chamber (111) get at the bottom of the mould in the chamber (111); The liquid level line of treating copper water reaches and stops to pour into copper water with the corresponding to level height of cast gate (121) time, and after cooling, removes chill cover plate (2) and remove resin sand, obtains having the glass mold copper alloy bed die of three quantity.

2. method by resin sand single box cast glass mould copper alloy bed die according to claim 1 is characterized in that described screen pack (1411) is a foam ceramic filter.

3. method by resin sand single box cast glass mould copper alloy bed die according to claim 1; It is characterized in that described resin sand is made up of the raw material of following parts by weight: quartz sand 98.5-99 part, hybrid resin 1-1.5 part.

4. method by resin sand single box cast glass mould copper alloy bed die according to claim 3; It is characterized in that described hybrid resin is made up of the raw material of following parts by weight: phenolic resins 50-60 part; Polyisocyanate resin 40-50 part, catalyst 0.312-0.464 part.

5. method by resin sand single box cast glass mould copper alloy bed die according to claim 4 is characterized in that described phenolic resins is 1600 type phenolic resins.

6. method by resin sand single box cast glass mould copper alloy bed die according to claim 4 is characterized in that described polyisocyanate resin is 2670 type polyisocyanate resins.

7. Method by resin sand single box cast glass mould copper alloy bed die according to claim 1 is characterized in that described catalyst is 3500 catalyst series