CN104057031A - Gravity casting process of lead-free brass tap - Google Patents

Gravity casting process of lead-free brass tap Download PDF

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Publication number
CN104057031A
CN104057031A CN201410269835.7A CN201410269835A CN104057031A CN 104057031 A CN104057031 A CN 104057031A CN 201410269835 A CN201410269835 A CN 201410269835A CN 104057031 A CN104057031 A CN 104057031A
Authority
CN
China
Prior art keywords
mould
die cavity
core
faucet body
water entering
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
Application number
CN201410269835.7A
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Chinese (zh)
Inventor
曹宏州
蔡文伟
王秋燕
刘杰峰
崔红俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Longyan Hong hang Sanitary Ware Co., Ltd.
Original Assignee
Quanzhou An Ke Bathroom Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Quanzhou An Ke Bathroom Co Ltd filed Critical Quanzhou An Ke Bathroom Co Ltd
Priority to CN201410269835.7A priority Critical patent/CN104057031A/en
Publication of CN104057031A publication Critical patent/CN104057031A/en
Pending legal-status Critical Current

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Abstract

The invention provides a gravity casting process of a lead-free brass tap, which has the advantages that a flowing distance of a product in a casting process is short, the simultaneous solidification is achieved, hot cracks are reduced; a heat balance effect of a mould is good, so that heat balance of the product is facilitated, and the stress micro-cracks during cooling are reduced. The gravity casting process of the lead-free brass tap comprises the following step of casting and forming lead-free brass liquid through a gravity casting device, wherein the gravity casting device comprises an upper half mould, a lower half mould and a sand core, wherein mould cavities matched with a tap body in shape are respectively and correspondingly arranged between the upper half mould and the lower half mould, the sand core is arranged in the mould cavities between the upper half mould and the lower half mould, the shape of the sand core is matched with the shapes of a water inlet part and a water outlet part of the tap and an inner cavity of an installing part of a valve core, a casting cavity is formed between the sand core and the mould cavity, a sprue in which lead-free molten copper is cast is arranged in the lower half mould, the sprue is connected with the casting cavity, the sprue is provided with an internal sprue and an external sprue, and the internal sprue is correspondingly arranged at the casting cavity for forming the water inlet part of the tap body.

Description

A kind of gravity foundry technology of unleaded brass taps
Technical field
The present invention relates to a kind of mould of tap, particularly a kind of gravity foundry technology of unleaded brass taps.
Background technology
In daily life, tap is the valve switch for controlling current size, tap is a kind of product of appearance structure relative complex, so its faucet body is generally one-body molded by casting technique, casting mould is a part for casting frock, is necessity equipment that makes cast member moulding and obtain required foundry goods.
As Fig. 1, the casting mould that the casting technique of existing ledrite tap is used generally comprises upper mold section and female die 2 ', between upper mold section and female die 2 ', be provided with core 3 ', the die joint of described female die 2 ' is provided with cast gate 4 ', the cast gate of this kind of casting mould is arranged on a side of female die 2 ', rear portion from faucet body when cast pours into, this kind of mould has simple in structure, easily manufactured advantage, but, the setting of its cast gate, it is longer that copper water pours into the time of the time of banishing, be only applicable to the moulding by casting of the ledrite water with good cold and hot working performance, if while being applied to bismuth-containing Bi without lead bronze, in the time of casting, due to, bismuth-containing Bi has the poor characteristic of mobility without lead bronze with respect to common lead brass, if adopt above-mentioned common lead brass casting die casting, the position of its cast gate arranges and will cause time of banishing without lead bronze liquid longer, be unfavorable for that liquid metal is full of die cavity fast, when product solidifies, temperature imbalance everywhere, can not realize simultaneously and solidifying, easy hot tearing when product solidifies, and due to the each place variable thickness sample of above-mentioned mould, the thermal balance of mould is poor, the also difference of time that the each position of product is cooling, when product moulding by casting is cooling, because of each position non-uniform temperature of mould, cause the each position of the product non-uniform temperature can not be simultaneously cooling, cause the non-uniform temperature of each place, when cooling, easily form the micro-strong line of thermal stress.In addition, above-mentioned mould is not established molten metal feeding mouth, and product can shrink and cannot cover in process of setting, and the shrinkage depression of product will affect the quality of product, can affect the function of product when serious, and the quality of product is declined.
Lead is one of heavy metal relatively large to harm, and lead enters environment and is difficult for removing later, and accumulate in environment, very easily biological and human body are produced to certain toxic action, particularly the cranial nerve to children and renal function cause irreversible damage, and serious meeting causes blood lead, brain lead poisoning, baryencephalia, dementia, the adverse consequences such as active.Therefore, be all devoted to research and develop a kind of casting device that is applicable to replace with bismuth plumbous unleaded brass taps both at home and abroad now.
Summary of the invention
For the problems referred to above, it is short that the present invention proposes a kind of product distance that flows in pouring into a mould kind, realizes and solidifying simultaneously, reduces fire check; The thermal balance of mould is effective, is beneficial to the thermal balance of product, reduces the gravity foundry technology of the unleaded brass taps of stress micro-crack when cooling.
For solving this technical problem, the present invention takes following scheme: a kind of gravity foundry technology of unleaded brass taps, comprise and will pass through the step of gravity casting device moulding by casting without ledrite liquid, described gravity casting device comprises upper mold section, female die and core, the corresponding die cavity that is provided with coupling faucet body profile respectively between upper mold section and female die, described core is located in the die cavity between upper mold section and female die, the profile of this core and faucet body water entering section, the shape of outlet part and spool installation portion inner chamber matches, between core and die cavity, form cast die cavity, on described upper mold section or female die, be also provided with for the cast gate pouring into without lead bronze water, this cast gate is connected with cast die cavity, this cast gate has ingate and pouring basin, described ingate correspondence is arranged on the cast die cavity place for moulding faucet body water entering section.
Further improve and be: described core comprises that profile is matched with the water entering section of faucet body water entering section cavity shape, the profile that is connected with water entering section is matched with the outlet part of faucet body outlet part cavity shape and be connected with outlet part one side profile is matched with the spool portion of faucet body spool installation portion, on described core water entering section that face near core outlet part, be also provided with and can cover the rising head that shrinks required molten metal in faucet body process of setting, described core water entering section is that hollow structure is to allow to store the needed molten metal of covering.
Further improved: the stagger thick large part of die cavity of the both sides of described female die is also provided with and is beneficial to the thermally equilibrated overflow launder of mould, and described overflow launder is connected with die cavity.
Further improved: the stagger thick large part of die cavity of the both sides of described upper mold section is also provided with and is beneficial to the thermally equilibrated overflow launder of mould, and described overflow launder is connected with die cavity.
Further improve and be: described cast gate is located on female die.
By adopting aforementioned techniques scheme, the invention has the beneficial effects as follows: the ingate correspondence of cast gate is arranged on to the cast die cavity place for moulding faucet body water entering section, middle part from product when cast directly pours into liquid metal, the distance that flows is short, water fashionable smooth-going nothing and impact, be conducive to liquid metal and be full of fast die cavity, be also easy to reach product equalized temperature everywhere, realize and solidifying simultaneously, reduce fire check.
Further: described core water entering section is provided with rising head near that face of core outlet part, rising head is arranged on the water entering section of core, can cover and in product process of setting, shrink needed molten metal, the liquid metal of simultaneously part first pouring into can having been lowered the temperature overflows, be conducive to the thermal balance of product, the setting of this rising head has also solved the problem that product shrinkage depression impacts product simultaneously, has improved the quality of shaped article.
Further: the thick general goal at mould arranges overflow launder, allow and overflow molten metal to this place's heating, be conducive to the thermal balance everywhere of mould, thereby reduce product temperature difference everywhere, avoid fire check, the liquid metal that simultaneously part first pouring into can have been lowered the temperature overflows, be conducive to the thermal balance of product, and because each position temperature of mould is even, make the each position of product temperature even, can make the each position of product simultaneously cooling, reduce the stress micro-crack when cooling.
Brief description of the drawings
Fig. 1 is the structural representation of the casting mould of existing ledrite tap;
Fig. 2 is the structural representation of embodiment of the present invention moulding faucet body;
Fig. 3 is the perspective view of embodiment of the present invention casting mould;
Fig. 4 is the structural representation of embodiment of the present invention female die;
Fig. 5 is the structural representation of embodiment of the present invention core.
Fig. 6 is the structural representation of embodiment of the present invention core water entering section.
Detailed description of the invention
Now the present invention is further described with specific embodiment by reference to the accompanying drawings.
Referring to figs. 2 to Fig. 6, the present embodiment discloses a kind of gravity foundry technology of unleaded brass taps, comprise and will pass through the step of gravity casting device moulding by casting without ledrite liquid, this forming step is known content, here do not do in detail and state, described gravity casting device comprises upper mold section 1, female die 2 and core 3, the corresponding die cavity 11 that is provided with coupling faucet body 4 profiles respectively between upper mold section 1 and female die 2, described core 3 is located in the die cavity 11 between upper mold section 1 and female die 2, the profile of this core 3 and faucet body 4 water entering sections 41, the shape of outlet part 42 and spool installation portion 43 inner chambers matches, between core 3 and die cavity 11, form cast die cavity, on described female die 2, be also provided with for the cast gate 23 pouring into without lead bronze water, this cast gate 23 is connected with cast die cavity, this cast gate 23 has ingate 231 and pouring basin 232, described ingate 231 correspondences are arranged on the cast die cavity place for moulding faucet body 4 water entering sections 41.The ingate correspondence of cast gate is arranged on to the cast die cavity place for moulding faucet body water entering section, middle part from product when cast directly pours into liquid metal, the distance that flows is short, water fashionable smooth-going without impacting, be conducive to liquid metal and be full of fast die cavity, also be easy to reach product equalized temperature everywhere, realize and solidifying simultaneously, reduce fire check.
Described core 3 comprises that profile is matched with the water entering section 31 of faucet body 4 water entering section 41 cavity shapes, the profile that is connected with water entering section 31 is matched with the outlet part 32 of faucet body 1 outlet part 42 cavity shapes and be connected with outlet part 32 1 sides profile is matched with the spool portion 33 of faucet body 1 spool installation portion 43, described core water entering section 31 is provided with and can covers the rising head 34 that shrinks required molten metal in faucet body 1 process of setting near that face of core outlet part 32, and described core water entering section 31 is for hollow structure is to allow to store the needed molten metal of covering.Rising head is arranged on the water entering section of core, can cover and in product process of setting, shrink needed molten metal, the liquid metal of simultaneously part first pouring into can having been lowered the temperature overflows, be conducive to the thermal balance of product, the setting of this rising head has also solved the problem that product shrinkage depression impacts product simultaneously, has improved the quality of shaped article.
The both sides of described upper mold section 1 are positioned at position that faucet body 4 water entering sections 41 and spool installation portion 43 join and are also provided with and are beneficial to the thermally equilibrated overflow launder 12 of mould, and described overflow launder 12 is connected with die cavity 11.The thick general goal of die cavity of staggering in the both sides of mould arranges overflow launder, allow and overflow molten metal to this place's heating, be conducive to the thermal balance everywhere of mould, thereby reduce product temperature difference everywhere, avoid fire check, the liquid metal that simultaneously part first pouring into can have been lowered the temperature overflows, be conducive to the thermal balance of product, and because each position temperature of mould is even, make the each position of product temperature even, can make the each position of product simultaneously cooling, reduce the stress micro-crack when cooling.
As shown in Figure 2, arranging of this overflow launder 12 can be positioned at water entering section 41 at moulding faucet body and form overflow piece 44 with the position that spool installation portion 43 joins.
Based on aforementioned techniques scheme, described cast gate also can be located on upper mold section, as long as the ingate correspondence of this cast gate is arranged on the cast die cavity place for moulding faucet body water entering section, just can realize technical solution of the present invention, described overflow launder also can be arranged on female die and be positioned at the both sides of faucet body water entering section and spool installation portion connecting position, can realize equally technical solution of the present invention.
Above record, only, for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.

Claims (5)

1. the gravity foundry technology of a unleaded brass taps, comprise and will pass through the step of gravity casting device moulding by casting without ledrite liquid, described gravity casting device comprises upper mold section, female die and core, the corresponding die cavity that is provided with coupling faucet body profile respectively between upper mold section and female die, described core is located in the die cavity between upper mold section and female die, the profile of this core and faucet body water entering section, the shape of outlet part and spool installation portion inner chamber matches, between core and die cavity, form cast die cavity, on described upper mold section or female die, be also provided with for the cast gate pouring into without lead bronze water, this cast gate is connected with cast die cavity, this cast gate has ingate and pouring basin, it is characterized in that: described ingate correspondence is arranged on the cast die cavity place for moulding faucet body water entering section.
2. the gravity foundry technology of unleaded brass taps according to claim 1, it is characterized in that: described core comprises that profile is matched with the water entering section of faucet body water entering section cavity shape, the profile being connected with water entering section is matched with the outlet part of faucet body outlet part cavity shape and the profile that is connected with outlet part one side is matched with the spool portion of faucet body spool installation portion, on described core water entering section that face near core outlet part, be also provided with and can cover the rising head that shrinks required molten metal in faucet body process of setting, described core water entering section is that hollow structure is to allow to store the needed molten metal of covering.
3. the gravity foundry technology of unleaded brass taps according to claim 1 and 2, is characterized in that: the stagger thick large part of die cavity of the both sides of described female die is also provided with and is beneficial to the thermally equilibrated overflow launder of mould, and described overflow launder is connected with die cavity.
4. the gravity foundry technology of unleaded brass taps according to claim 1 and 2, is characterized in that: the stagger thick large part of die cavity of the both sides of described upper mold section is also provided with and is beneficial to the thermally equilibrated overflow launder of mould, and described overflow launder is connected with die cavity.
5. the gravity foundry technology of unleaded brass taps according to claim 1, is characterized in that: described cast gate is located on female die.
CN201410269835.7A 2014-06-17 2014-06-17 Gravity casting process of lead-free brass tap Pending CN104057031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410269835.7A CN104057031A (en) 2014-06-17 2014-06-17 Gravity casting process of lead-free brass tap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410269835.7A CN104057031A (en) 2014-06-17 2014-06-17 Gravity casting process of lead-free brass tap

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259393A (en) * 2014-10-09 2015-01-07 广东伟祥卫浴实业有限公司 Casting technology for lead-free brass tap
CN105964911A (en) * 2016-06-30 2016-09-28 广东中欧卫浴用品有限公司 Method for preparing unleaded brass tap
CN108620540A (en) * 2018-05-29 2018-10-09 泉州联创厨卫有限公司 A kind of gravity casting apparatus of kirsite tap

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179475A (en) * 2011-05-13 2011-09-14 中宇建材集团有限公司 Novel gravity casting pouring device suitable for lead-free brass
CN102211145A (en) * 2011-05-17 2011-10-12 湖南中特液力传动机械有限公司 Gravity casting process of all-metal mould of coupler aluminum part
CN202155479U (en) * 2011-05-13 2012-03-07 中宇建材集团有限公司 Novel gravity casting pouring device applicable to lead-free brass
CN102794412A (en) * 2011-05-23 2012-11-28 张年生 Water turbine sleeve casting mould assembling box
CN202762962U (en) * 2012-07-16 2013-03-06 珠海祥锦五金电器有限公司 Casting mould

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179475A (en) * 2011-05-13 2011-09-14 中宇建材集团有限公司 Novel gravity casting pouring device suitable for lead-free brass
CN202155479U (en) * 2011-05-13 2012-03-07 中宇建材集团有限公司 Novel gravity casting pouring device applicable to lead-free brass
CN102211145A (en) * 2011-05-17 2011-10-12 湖南中特液力传动机械有限公司 Gravity casting process of all-metal mould of coupler aluminum part
CN102794412A (en) * 2011-05-23 2012-11-28 张年生 Water turbine sleeve casting mould assembling box
CN202762962U (en) * 2012-07-16 2013-03-06 珠海祥锦五金电器有限公司 Casting mould

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259393A (en) * 2014-10-09 2015-01-07 广东伟祥卫浴实业有限公司 Casting technology for lead-free brass tap
CN105964911A (en) * 2016-06-30 2016-09-28 广东中欧卫浴用品有限公司 Method for preparing unleaded brass tap
CN108620540A (en) * 2018-05-29 2018-10-09 泉州联创厨卫有限公司 A kind of gravity casting apparatus of kirsite tap

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SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: LONGYAN HONGHANG BATHROOM CO., LTD.

Free format text: FORMER OWNER: QUANZHOU ANKE SANITARY WARE CO., LTD.

Effective date: 20150513

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 362300 QUANZHOU, FUJIAN PROVINCE TO: 364200 LONGYAN, FUJIAN PROVINCE

TA01 Transfer of patent application right

Effective date of registration: 20150513

Address after: 364200 Longyan city of Fujian province Shanghang County Lincheng town Nangang Industrial Park Industrial Park area 19-03 plots whangee (Office)

Applicant after: Longyan Hong hang Sanitary Ware Co., Ltd.

Address before: 362300 Quanzhou, Nanan City, the town of the village of the town of Lun Lun

Applicant before: Quanzhou An Ke bathroom Co., Ltd

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140924