CN106224667B - A kind of quick firm flange of connection - Google Patents
A kind of quick firm flange of connection Download PDFInfo
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- CN106224667B CN106224667B CN201610606836.5A CN201610606836A CN106224667B CN 106224667 B CN106224667 B CN 106224667B CN 201610606836 A CN201610606836 A CN 201610606836A CN 106224667 B CN106224667 B CN 106224667B
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- B22C9/04—Use of lost patterns
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/007—Ferrous alloys, e.g. steel alloys containing silver
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to a kind of quick firm flanges of connection, including first flange, second flange, seal washer, fastening bolt and nut, the corresponding position of first flange and second flange offers at least two arcuate sockets respectively, fastening bolt sequentially passes through first flange and the arcuate socket of second flange is connect with nut thread, seal washer is arranged between first flange and second flange, second flange is provided with annular link block close to first flange side, it is formed with external screw thread on the outside of annular link block, first flange offers the link slot to match with annular link block, link slot inner wall is formed with the internal thread to match with the external screw thread of annular link block.The first flange of the quick firm flange of connection of the present invention first passes through link block threaded connection when being connected with second flange, it is bolted again, two connection types cooperate, so that the connection more firm stable of first flange and second flange, greatly reduces the problems such as being revealed caused by connection is insecure.
Description
Technical field
The present invention relates to a kind of quick firm flanges of connection, belong to technical field of pipeline connection.
Background technology
Flange is called ring flange or flange, and the part for making pipe be connected with each other with pipe is connected to pipe end.There is hole on flange
Eye, can wear bolt, typically refer to open the hole of upper several fixations for connecting it on the periphery of the metallic object of a similar plate-like
Its thing.Existing flanged joint is exactly that two pipelines, pipe fitting or equipment are first individually fixed on a ring flange, two
Between a ring flange, in addition flange gasket, is tightened together with bolt, connection is completed.Flanged joint is the important company of pipeline construction
Mode is connect, flanged joint is easy to use, can bear larger pressure, and in industrial pipeline, the use of flanged joint is very wide
It is general, but during common flange installation or removal, the installation or removal of bolt needs one by one are needed, it is relatively time-consuming to take
Power has dragged slowly construction speed.And the fastening bolt connection multi-purpose greatly of current flange, when fastening bolt disabling damage, flange
Connection can also fail.
Invention content
The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, propose a kind of quick firm flange of connection.
The technical solution that the present invention proposes to solve above-mentioned technical problem is：A kind of quick firm flange of connection, including
The corresponding position of first flange, second flange, seal washer, fastening bolt and nut, first flange and second flange is opened respectively
Equipped at least two arcuate sockets, fastening bolt sequentially passes through first flange and the arcuate socket of second flange is connect with nut thread,
Seal washer is arranged between the first flange and second flange, and second flange is provided with annular even close to first flange side
Block is connect, external screw thread is formed on the outside of annular link block, first flange offers the link slot to match with annular link block, link slot
Inner wall is formed with the internal thread to match with the external screw thread of annular link block；
The mass percent of each ingredient is in first flange and second flange：C：0.04-0.11%, Al: 1.13-1.36%,
Zn: 0.52-0.63%,Si：0.13-0.21%, Mn：0.33-0.46%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02-
0.04%, Ni：0.31-0.43%, Cu：0.33-0.37%, V：0.06-0.08%, Mo：0.01-0.02%, Ti：0.41-0.49%, B：
0.01-0.02%, Pd：0.02-0.03%,Pt：0.17-0.19%, W：0.26-0.29%,Ta：0.01-0.02%,Nd：0.05-
0.07%,Ce：0.04-0.07%,Eu：0.06-0.08%,Lu:0.11-0.16%, Au：0.35-0.46%, Ag:0.72-0.85%,
Ga：0.01-0.02%, Y：0.03-0.05%, Sn：0.36-0.43%, Zr：0.07-0.14%, Re：0.03-0.05%, Os：0.01-
0.02%, Hf：0.04-0.08%, Bi：0.14-0.18%, glass fibre：0.11-0.16%, calcium oxide：0.22-0.28% is sliding
Mountain flour:0.16-0.25%, magnesia：0.23-0.29%, copper oxide：0.16-0.18%, iron oxide：0.35-0.41%, dioxy
Change manganese：0.46-0.49%, Kocide SD：0.06-0.09%, iron hydroxide：0.11-0.14%, calcium hydroxide：0.16-
0.19%, barium hydroxide：0.14-0.17%, sodium chloride：0.03-0.07%, calcium carbonate：0.16-0.27%, potassium nitrate：
0.31-0.36%, magnesium chloride：0.22-0.29%, calcium chloride：0.06-0.11%, potassium chlorate：0.16-0.18%, surplus are
Fe；
The casting technique of first flange and second flange includes the following steps：
(i) melting raw material：
A, it is added raw materials into smelting furnace by the mass percent of each ingredient in scheduled flange, the temperature in smelting furnace is improved
To 1410 degrees Celsius to 1450 degrees Celsius, raw material is smelted to form alloy solution；
B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination when cooling, first use water cooling with
Alloy solution water cooling to 490-520 DEG C of formation alloy, is then air-cooled to 350-360 DEG C, then adopt by the cooling rate of 16-18 DEG C/s
With water cooling with the cooling rate of 13-15 DEG C/s by alloy water cooling to room temperature；
C, it heats, previous step alloy after cooling is added in smelting furnace, the temperature in smelting furnace is increased to 1550 degrees Celsius
To 1590 degrees Celsius, alloy forms alloy solution by secondary smelting；
D, packet is scalded, the alloy solution in smelting furnace is poured into casting ladle, carries out scalding packet；
E, after scalding packet, the alloy solution in casting ladle is poured into electric furnace, the temperature in electric furnace, which is warming up to 1560, to be taken the photograph
Family name's degree heats 14 minutes to 18 minutes to 1590 degrees Celsius, the alloy solution in electric furnace is poured into casting ladle, ladle-to-ladle cooling；
F, after ladle-to-ladle, the alloy solution in casting ladle is poured into electric furnace, temperature is down to 1450 to 1470 degrees Celsius, in casting ladle
Packet sequentially adds 1.4% to 1.5% nodulizer and 0.2% to 0.3% inovulant in hole, with 5 to 6kg sheet metals, sheet metal
Thickness is 0.5mm to 1mm, sheet metal is covered in nodulizer, on inovulant, and consolidate；
G, alloy solution in electric furnace is poured into the other side of casting ladle indent, spheroidizing reacion 70s to 75s, spheroidizing reacion fills
After point, one layer of collection slag agent is spread, is quickly skimmed；
H, after quickly skimming, swelling perlite powder is sprinkled on alloy solution surface immediately, twice of slag hitting, after the completion of slag hitting,
Alloy solution to be cast is formed, is poured in five minutes；
(ii) prepared by wax-pattern：Using low-temperature wax and mechanical casting technology, makes consistent with cast member and include insulated feeder
Wax-pattern, and wax-pattern is modified, wax-pattern is cleaned using wax base cleaning agent later；
(iii) shell mold sand mold is made in step (ii) wax-pattern obtained：The step comprises the steps of：
A, on the position that wax-pattern places insulated feeder, the surface for placing insulated feeder is covered with EVA adhesive film, to prevent the table
Face is contaminated；
B, it is coated with the first face layer in wax pattern surface：
First, slurries are prepared in wax pattern surface dip-coating zirconium powder and silica sol binder, the viscosity numbers of the slurries 52~
60 seconds；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the zircon sand of 150 mesh, should be cleared up after floating sand
Residual slurry in EVA adhesive film and zircon sand；
Third spontaneously dries the wax-pattern after artificial floating sand, and drying time is 9~12 hours；
C, the wax pattern surface made from step B is coated with the second transition zone：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step B is prepared with silica sol binder, the slurries
Viscosity number at 45~48 seconds；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the Malaysia sand of 65~80 mesh, be answered after floating sand
Clear up the residual slurry and Malaysia sand in EVA adhesive film；
Wax-pattern after artificial floating sand is put in vacuum drying chamber and is dried, controls the temperature in vacuum drying chamber by third
Degree is 45~55 degrees Celsius, and it is 110~130Pa to control the air pressure in vacuum drying chamber, and drying time is 15~20 hours；
D, the wax pattern surface made from step C is coated with third reinforcing layer：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step C is prepared with silica sol binder, the slurries
Viscosity number at 21~27 seconds；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the Malaysia sand of 6~9 mesh, be answered clearly after floating sand
Manage the residual slurry and Malaysia sand in EVA adhesive film；
Wax-pattern is put in vacuum drying chamber and is dried by third, controls the temperature in vacuum drying chamber and is taken the photograph for 55~65
Family name's degree, it is 65~95Pa to control the air pressure in vacuum drying chamber, and drying time is 12~15 hours；
E, the wax pattern surface made from step D is coated with the 4th slurry seal layer：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step D is prepared with silica sol binder, the slurries
Viscosity number at 5~6 seconds；
Then, the residual slurry in EVA adhesive film is cleared up；
Wax-pattern after artificial floating sand is put under the wind speed of 1.1~1.2 meter per seconds and is dried by third, drying time 12
~36 hours；
(iv) it dewaxes：Using steam dewaxing, the pressure of steam is 0.6MPa, and the time is 18~55 minutes, and is answered first before dewaxing
The EVA adhesive film at insulated feeder position is removed, shell mold is made；
(v) shell mold roasts
The shell mold of step (iv) is roasted using temperature-gradient method baking modes, in roasting：First 550 degrees Celsius with
Secondly preceding heating rate control keeps the temperature 1.5 hours at 550 degrees Celsius, then, is warming up at full speed in 100 degrees Celsius/hour
1150 degrees Celsius, and keep 1150 degrees Celsius of half an hours, cooling of finally coming out of the stove；
(vi) using wire cutting machine, (v) shell mold obtained is cut along the centre of each arcuate socket by step；
(vii) it will be fixed with adhesive tape after step (vi) the shell mold splicing completely of well cutting, be put into the sandbox prepared by formative technology
In, blend compounds band seals the cast gate and insulated feeder for cast in the shell mold, is then placed in the mixed sand by preparation, piles
Ram-jolt is carried out with foundry jolter again after mixed sand, forms sand mold；
(viii) by after step (vii) ram-jolt sand mold and sandbox plane strike off, and mould surface at interval of 15cm prick a gas
Eye, the core are pricked to from 3~5cm of model surface；
(ix) it pours into a mould
Baking 1 hour or more carried out to shell mold with the air-heater of 300~350 degrees Celsius of constant temperature before cast, when cast, cast
Temperature is 1500~1650 degrees Celsius, and after cast, casting keeps the temperature 1~2 hour in sand mold；
(x) it after moulding by casting, is demoulded, will successively be removed per part shell mold, and cut off the insulated feeder of casting, cast
Part.
The improvement of above-mentioned technical proposal is：The arcuate socket of first flange and second flange is three, and three arcuate sockets are uniformly distributed
Setting.
The improvement of above-mentioned technical proposal is：First flange and the opposite both sides of second flange are separately installed with pipe joint.
The improvement of above-mentioned technical proposal is：The mass percent of each ingredient is in first flange and second flange：C：
0.05%, Al: 1.15%,Zn: 0.53%,Si：0.14%, Mn：0.34%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02%,
Ni：0.32%, Cu：0.34%, V：0.06%, Mo：0.01%, Ti：0.43%, B：0.01%, Pd：0.02%,Pt：0.18%, W：
0.27%,Ta：0.01%,Nd：0.06%,Ce：0.05%,Eu：0.06%,Lu:0.12%, Au：0.36%, Ag:0.75%, Ga：
0.01%, Y：0.03%, Sn：0.36%, Zr：0.08%, Re：0.04%, Os：0.01%, Hf：0.04%, Bi：0.14%, glass fibre：
0.12%, calcium oxide：0.23%, talcum powder:0.17%, magnesia：0.24%, copper oxide：0.16%, iron oxide：0.36%,
Manganese dioxide：0.46%, Kocide SD：0.07%, iron hydroxide：0.12%, calcium hydroxide：0.17%, barium hydroxide：
0.15%, sodium chloride：0.04%, calcium carbonate：0.17%, potassium nitrate：0.32%, magnesium chloride：0.23%, calcium chloride：0.07%,
Potassium chlorate：0.16%, surplus Fe.
The improvement of above-mentioned technical proposal is：The mass percent of each ingredient is in first flange and second flange：C：
0.08%, Al: 1.33%,Zn: 0.61%,Si：0.18%, Mn：0.42%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.04%,
Ni：0.42%, Cu：0.37%, V：0.08%, Mo：0.02%, Ti：0.47%, B：0.02%, Pd：0.03%,Pt：0.19%, W：
0.29%,Ta：0.02%,Nd：0.07%,Ce：0.06%,Eu：0.07%,Lu:0.15%, Au：0.46%, Ag:0.85%, Ga：
0.02%, Y：0.05%, Sn：0.43%, Zr：0.13%, Re：0.05%, Os：0.02%, Hf：0.07%, Bi：0.17%, glass fibre：
0.16%, calcium oxide：0.26%, talcum powder:0.25%, magnesia：0.29%, copper oxide：0.18%, iron oxide：0.39%,
Manganese dioxide：0.49%, Kocide SD：0.09%, iron hydroxide：0.13%, calcium hydroxide：0.18%, barium hydroxide：
0.16%, sodium chloride：0.06%, calcium carbonate：0.27%, potassium nitrate：0.35%, magnesium chloride：0.28%, calcium chloride：0.09%,
Potassium chlorate：0.17%, surplus Fe.
The improvement of above-mentioned technical proposal is：The step of casting technique of first flange and second flange (i) in：B, by upper one
It walks obtained alloy solution to be cooled down, water cooling and air-cooled combination, first use water cooling with the cooling rate of 17 DEG C/s when cooling
By alloy solution water cooling to 510 DEG C of formation alloys, 355 DEG C are then air-cooled to, then uses water cooling will with the cooling rate of 14 DEG C/s
Alloy water cooling is to room temperature.
The improvement of above-mentioned technical proposal is：The step of casting technique of first flange and second flange (ix) in, pour into a mould before use
The air-heater that 340 degrees Celsius of constant temperature carries out baking 1.5 hours to shell mold, and when cast, pouring temperature is 1550 degrees Celsius, cast
Afterwards, casting keeps the temperature 2 hours in sand mold.
The present invention is using the advantageous effect of above-mentioned technical proposal：（1）Due to the correspondence position of first flange and second flange
It sets and offers at least two arcuate sockets respectively, when installation, bolt need to only pass sequentially through arcuate socket can be by first flange and
Two flanges are fixed, and slowly need not be slowly aligned the mounting hole in first flange and the second method successively, be substantially increased installation
Efficiency so that flange installation becomes efficient quick, can effectively speed up the work；（2）Since second flange is close to the first method
Blue side is provided with annular link block, and external screw thread is formed on the outside of annular link block, and first flange offers and annular link block phase
Matched link slot, link slot inner wall are formed with the internal thread to match with the external screw thread of annular link block, first flange and second
Link block threaded connection is first passed through when flanged joint, then is bolted, and two connection types cooperate so that the first method
Blue and second flange connection more firm stable greatly reduces the problems such as being revealed caused by connection is insecure；（3）Due to
It is provided with seal washer between one flange and second flange, ensure that the sealing performance of flange, is prevented in flange in connecting portion
It reveals；（4）The first flange and second flange of ingredient percent casting using the present invention, have corrosion-resistant, resistance to
The high and with long service life advantage of high temperature, intensity；（5）When raw material melting of the present invention, by scalding packet, ladle-to-ladle, spheroidizing reacion, skimming
With the cooperation of slag hitting so that raw material melting is more thorough, can effectively remove the impurity in raw material, improves casting quality；（6）This
It when invention raw material melting, is quickly cooled down with air-cooled combination using water cooling after first time melting, second of melting is carried out afterwards, by fast
The cooling of speed and secondary smelting, the impurity in greatly reducing originally, improve the quality of final casting；（7）Using low-temperature wax
Cured mould is made with mechanical casting technology, model obtained is more accurate careful；（8）When making shell mold sand mold, covered with EVA adhesive film
The surface for placing insulated feeder, can effectively prevent that the surface is contaminated, and place the method with sword iron plate relative to tradition, use
EVA adhesive film is suitble to the riser of various specifications, and more convenient efficient, cost is lower；（9）When making shell mold sand mold, by using true
The method of empty drying box drying and natural-wind dry is combined so that shell mold drying is more thoroughly efficient, shell mold quality obtained
More preferable intensity higher；（10）Shell mold is roasted using temperature-gradient method baking modes, improves roasting quality, reduces shell mold
The probability of explosion；（11）The present invention using wire cutting machine, by step, (v) along the centre of each arcuate socket cut by shell mold obtained
It cuts so that, can be conveniently stripped after casting, shell mold need not be crushed so that shell mold can be used for multiple times, and substantially reduce
Casting cost.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural schematic diagram of the quick firm flange of connection of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the first flange of the quick firm flange of connection of the embodiment of the present invention；
Wherein：1- first pipe interfaces；2- nuts；3- first flanges；3a- arcuate sockets；4- seal washers；5- annulars connect
Block；6- second flanges；7- fastening bolts；8- second pipe interfaces.
Specific implementation mode
Embodiment one
The quick firm flange of the connection of the present embodiment, as illustrated in fig. 1 and 2, including it is first flange 3, second flange 6, close
The corresponding position of seal washer 4, fastening bolt 7 and nut 2, first flange 3 and second flange 6 offers arcuate socket 3a respectively, tightly
Fixing bolt 7 sequentially passes through first flange 3 and the arcuate socket 3a of second flange 6 is threadedly coupled with nut 2, and the setting of seal washer 4 exists
Between first flange 3 and second flange 6, second flange 6 is provided with annular link block 5, annular connection close to 3 side of first flange
The outside of block 5 is formed with external screw thread, and first flange 3 offers the link slot to match with annular link block 5, link slot inner wall be formed with
The internal thread that the external screw thread of annular link block matches；The arcuate socket 3a of first flange 3 and second flange 6 is respectively three, and three
A arcuate socket 3a is uniformly arranged.First flange 3 and the opposite both sides of second flange 6 are separately installed with first pipe interface 1 and
Two pipe joints 8.
The mass percent of each ingredient is in first flange and second flange：C：0.05%, Al: 1.15%,Zn: 0.53%,
Si：0.14%, Mn：0.34%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02%, Ni：0.32%, Cu：0.34%, V：0.06%,
Mo：0.01%, Ti：0.43%, B：0.01%, Pd：0.02%,Pt：0.18%, W：0.27%,Ta：0.01%,Nd：0.06%,Ce：
0.05%,Eu：0.06%,Lu:0.12%, Au：0.36%, Ag:0.75%, Ga：0.01%, Y：0.03%, Sn：0.36%, Zr：0.08%,
Re：0.04%, Os：0.01%, Hf：0.04%, Bi：0.14%, glass fibre：0.12%, calcium oxide：0.23%, talcum powder:
0.17%, magnesia：0.24%, copper oxide：0.16%, iron oxide：0.36%, manganese dioxide：0.46%, Kocide SD：
0.07%, iron hydroxide：0.12%, calcium hydroxide：0.17%, barium hydroxide：0.15%, sodium chloride：0.04%, calcium carbonate：
0.17%, potassium nitrate：0.32%, magnesium chloride：0.23%, calcium chloride：0.07%, potassium chlorate：0.16%, surplus Fe.
The casting technique of first flange and second flange includes the following steps：
(i) melting raw material：
A, it is added raw materials into smelting furnace by the mass percent of each ingredient in scheduled flange, the temperature in smelting furnace is improved
To 1410 degrees Celsius to 1450 degrees Celsius, raw material is smelted to form alloy solution；
B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination when cooling, first use water cooling with
Alloy solution water cooling to 510 DEG C of formation alloys, is then air-cooled to 355 DEG C, then use water cooling with 14 by the cooling rate of 17 DEG C/s
DEG C/cooling rate of s is by alloy water cooling to room temperature；
C, it heats, previous step alloy after cooling is added in smelting furnace, the temperature in smelting furnace is increased to 1550 degrees Celsius
To 1590 degrees Celsius, alloy forms alloy solution by secondary smelting；
D, packet is scalded, the alloy solution in smelting furnace is poured into casting ladle, carries out scalding packet；
E, after scalding packet, the alloy solution in casting ladle is poured into electric furnace, the temperature in electric furnace, which is warming up to 1560, to be taken the photograph
Family name's degree heats 14 minutes to 18 minutes to 1590 degrees Celsius, the alloy solution in electric furnace is poured into casting ladle, ladle-to-ladle cooling；
F, after ladle-to-ladle, the alloy solution in casting ladle is poured into electric furnace, temperature is down to 1450 to 1470 degrees Celsius, in casting ladle
Packet sequentially adds 1.4% to 1.5% nodulizer and 0.2% to 0.3% inovulant in hole, with 5 to 6kg sheet metals, sheet metal
Thickness is 0.5mm to 1mm, sheet metal is covered in nodulizer, on inovulant, and consolidate；
G, alloy solution in electric furnace is poured into the other side of casting ladle indent, spheroidizing reacion 70s to 75s, spheroidizing reacion fills
After point, one layer of collection slag agent is spread, is quickly skimmed；
H, after quickly skimming, swelling perlite powder is sprinkled on alloy solution surface immediately, twice of slag hitting, after the completion of slag hitting,
Alloy solution to be cast is formed, is poured in five minutes；
(ii) prepared by wax-pattern：Using low-temperature wax and mechanical casting technology, makes consistent with cast member and include insulated feeder
Wax-pattern, and wax-pattern is modified, wax-pattern is cleaned using wax base cleaning agent later；
(iii) shell mold sand mold is made in step (ii) wax-pattern obtained：The step comprises the steps of：
A, on the position that wax-pattern places insulated feeder, the surface for placing insulated feeder is covered with EVA adhesive film, to prevent the table
Face is contaminated；
B, it is coated with the first face layer in wax pattern surface：
First, slurries are prepared in wax pattern surface dip-coating zirconium powder and silica sol binder, the viscosity numbers of the slurries 52~
60 seconds；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the zircon sand of 150 mesh, should be cleared up after floating sand
Residual slurry in EVA adhesive film and zircon sand；
Third spontaneously dries the wax-pattern after artificial floating sand, and drying time is 9~12 hours；
C, the wax pattern surface made from step B is coated with the second transition zone：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step B is prepared with silica sol binder, the slurries
Viscosity number at 45~48 seconds；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the Malaysia sand of 65~80 mesh, be answered after floating sand
Clear up the residual slurry and Malaysia sand in EVA adhesive film；
Wax-pattern after artificial floating sand is put in vacuum drying chamber and is dried, controls the temperature in vacuum drying chamber by third
Degree is 45~55 degrees Celsius, and it is 110~130Pa to control the air pressure in vacuum drying chamber, and drying time is 15~20 hours；
D, the wax pattern surface made from step C is coated with third reinforcing layer：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step C is prepared with silica sol binder, the slurries
Viscosity number at 21~27 seconds；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the Malaysia sand of 6~9 mesh, be answered clearly after floating sand
Manage the residual slurry and Malaysia sand in EVA adhesive film；
Wax-pattern is put in vacuum drying chamber and is dried by third, controls the temperature in vacuum drying chamber and is taken the photograph for 55~65
Family name's degree, it is 65~95Pa to control the air pressure in vacuum drying chamber, and drying time is 12~15 hours；
E, the wax pattern surface made from step D is coated with the 4th slurry seal layer：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step D is prepared with silica sol binder, the slurries
Viscosity number at 5~6 seconds；
Then, the residual slurry in EVA adhesive film is cleared up；
Wax-pattern after artificial floating sand is put under the wind speed of 1.1~1.2 meter per seconds and is dried by third, drying time 12
~36 hours；
(iv) it dewaxes：Using steam dewaxing, the pressure of steam is 0.6MPa, and the time is 18~55 minutes, and is answered first before dewaxing
The EVA adhesive film at insulated feeder position is removed, shell mold is made；
(v) shell mold roasts
The shell mold of step (iv) is roasted using temperature-gradient method baking modes, in roasting：First 550 degrees Celsius with
Secondly preceding heating rate control keeps the temperature 1.5 hours at 550 degrees Celsius, then, is warming up at full speed in 100 degrees Celsius/hour
1150 degrees Celsius, and keep 1150 degrees Celsius of half an hours, cooling of finally coming out of the stove；
(vi) using wire cutting machine, (v) shell mold obtained is cut along the centre of each arcuate socket by step；
(vii) it will be fixed with adhesive tape after step (vi) the shell mold splicing completely of well cutting, be put into the sandbox prepared by formative technology
In, blend compounds band seals the cast gate and insulated feeder for cast in the shell mold, is then placed in the mixed sand by preparation, piles
Ram-jolt is carried out with foundry jolter again after mixed sand, forms sand mold；
(viii) by after step (vii) ram-jolt sand mold and sandbox plane strike off, and mould surface at interval of 15cm prick a gas
Eye, the core are pricked to from 3~5cm of model surface；
(ix) it pours into a mould
Baking 1.5 hours carried out to shell mold with the air-heater of 340 degrees Celsius of constant temperature before cast, when cast, pouring temperature is
1550 degrees Celsius, after cast, casting keeps the temperature 2 hours in sand mold；
(x) it after moulding by casting, is demoulded, will successively be removed per part shell mold, and cut off the insulated feeder of casting, cast
Part.
Embodiment two
Fast firm flange and embodiment one are essentially identical for the connection of the present embodiment, the difference is that, first flange
Mass percent with each ingredient in second flange is：C：0.08%, Al: 1.33%,Zn: 0.61%,Si：0.18%, Mn：
0.42%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.04%, Ni：0.42%, Cu：0.37%, V：0.08%, Mo：0.02%, Ti：
0.47%, B：0.02%, Pd：0.03%,Pt：0.19%, W：0.29%,Ta：0.02%,Nd：0.07%,Ce：0.06%,Eu：0.07%,
Lu:0.15%, Au：0.46%, Ag:0.85%, Ga：0.02%, Y：0.05%, Sn：0.43%, Zr：0.13%, Re：0.05%, Os：
0.02%, Hf：0.07%, Bi：0.17%, glass fibre：0.16%, calcium oxide：0.26%, talcum powder:0.25%, magnesia：
0.29%, copper oxide：0.18%, iron oxide：0.39%, manganese dioxide：0.49%, Kocide SD：0.09%, iron hydroxide：
0.13%, calcium hydroxide：0.18%, barium hydroxide：0.16%, sodium chloride：0.06%, calcium carbonate：0.27%, potassium nitrate：
0.35%, magnesium chloride：0.28%, calcium chloride：0.09%, potassium chlorate：0.17%, surplus Fe.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted
The protection domain asked.
Claims (7)
1. a kind of quick firm flange of connection, it is characterised in that：Including first flange, second flange, seal washer, fastening spiral shell
The corresponding position of screw bolt and nut, the first flange and second flange offers at least two arcuate sockets, the fastening spiral shell respectively
Bolt sequentially passes through first flange and the arcuate socket of second flange is connect with the nut thread, and the seal washer is arranged described
Between first flange and second flange, the second flange is provided with annular link block close to the first flange side, described
External screw thread is formed on the outside of annular link block, the first flange offers the link slot to match with the annular link block, institute
It states link slot inner wall and is formed with the internal thread to match with the external screw thread of the annular link block；
The mass percent of each ingredient is in the first flange and second flange：C：0.04-0.11%, Al: 1.13-1.36%,
Zn: 0.52-0.63%,Si：0.13-0.21%, Mn：0.33-0.46%, S：≤ 0.030%, P：≤ 0.030%, Cr：0.02-
0.04%, Ni：0.31-0.43%, Cu：0.33-0.37%, V：0.06-0.08%, Mo：0.01-0.02%, Ti：0.41-0.49%, B：
0.01-0.02%, Pd：0.02-0.03%,Pt：0.17-0.19%, W：0.26-0.29%,Ta：0.01-0.02%,Nd：0.05-
0.07%,Ce：0.04-0.07%,Eu：0.06-0.08%,Lu:0.11-0.16%, Au：0.35-0.46%, Ag:0.72-0.85%,
Ga：0.01-0.02%, Y：0.03-0.05%, Sn：0.36-0.43%, Zr：0.07-0.14%, Re：0.03-0.05%, Os：0.01-
0.02%, Hf：0.04-0.08%, Bi：0.14-0.18%, glass fibre：0.11-0.16%, calcium oxide：0.22-0.28% is sliding
Mountain flour:0.16-0.25%, magnesia：0.23-0.29%, copper oxide：0.16-0.18%, iron oxide：0.35-0.41%, dioxy
Change manganese：0.46-0.49%, Kocide SD：0.06-0.09%, iron hydroxide：0.11-0.14%, calcium hydroxide：0.16-
0.19%, barium hydroxide：0.14-0.17%, sodium chloride：0.03-0.07%, calcium carbonate：0.16-0.27%, potassium nitrate：
0.31-0.36%, magnesium chloride：0.22-0.29%, calcium chloride：0.06-0.11%, potassium chlorate：0.16-0.18%, surplus are
Fe；
The casting technique of the first flange and second flange includes the following steps：
(i) melting raw material：
A, it is added raw materials into smelting furnace by the mass percent of each ingredient in scheduled flange, the temperature in smelting furnace is increased to
1410 degrees Celsius to 1450 degrees Celsius, raw material is smelted to form alloy solution；
B, alloy solution obtained in the previous step is cooled down, water cooling and air-cooled combination, first use water cooling with 16-18 when cooling
DEG C/alloy solution water cooling to 490-520 DEG C of formation alloy, is then air-cooled to 350-360 DEG C, then use water by the cooling rate of s
The cold cooling rate with 13-15 DEG C/s is by alloy water cooling to room temperature；
C, it heats, previous step alloy after cooling is added in smelting furnace, the temperature in smelting furnace is increased to 1550 degrees Celsius extremely
1590 degrees Celsius, alloy forms alloy solution by secondary smelting；
D, packet is scalded, the alloy solution in smelting furnace is poured into casting ladle, carries out scalding packet；
E, after scalding packet, the alloy solution in casting ladle is poured into electric furnace, the temperature in electric furnace is warming up to 1560 degrees Celsius
To 1590 degrees Celsius, heats 14 minutes to 18 minutes, the alloy solution in electric furnace is poured into casting ladle, ladle-to-ladle cooling；
F, after ladle-to-ladle, the alloy solution in casting ladle is poured into electric furnace, temperature is down to 1450 to 1470 degrees Celsius, is cheated in the packet of casting ladle
In sequentially add 1.4% to 1.5% nodulizer and 0.2% to 0.3% inovulant, with 5 to 6kg sheet metals, the thickness of sheet metal
For 0.5mm to 1mm, sheet metal is covered in nodulizer, on inovulant, and consolidate；
G, alloy solution in electric furnace pours into the other side of casting ladle indent, spheroidizing reacion 70s to 75s, after spheroidizing reacion is abundant,
One layer of collection slag agent is spread, is quickly skimmed；
H, after quickly skimming, it is sprinkled into swelling perlite powder on alloy solution surface immediately, twice of slag hitting after the completion of slag hitting, is formed
Alloy solution to be cast is poured in five minutes；
(ii) prepared by wax-pattern：Using low-temperature wax and mechanical casting technology, wax consistent with cast member and including insulated feeder is made
Mould, and wax-pattern is modified, wax-pattern is cleaned using wax base cleaning agent later；
(iii) shell mold sand mold is made in step (ii) wax-pattern obtained：The step comprises the steps of：
A, wax-pattern place insulated feeder position on, with EVA adhesive film cover place insulated feeder surface, to prevent the surface by
To pollution；
B, it is coated with the first face layer in wax pattern surface：
First, slurries are prepared in wax pattern surface dip-coating zirconium powder and silica sol binder；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the zircon sand of 150 mesh, should be cleared up after floating sand described
Residual slurry in EVA adhesive film and zircon sand；
Third spontaneously dries the wax-pattern after artificial floating sand, and drying time is 9~12 hours；
C, the wax pattern surface made from step B is coated with the second transition zone：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step B is prepared with silica sol binder；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the Malaysia sand of 65~80 mesh, should be cleared up after floating sand
Residual slurry in the EVA adhesive film and Malaysia sand；
Wax-pattern after artificial floating sand is put in vacuum drying chamber and is dried by third, and the temperature controlled in vacuum drying chamber is
45~55 degrees Celsius, it is 110~130Pa to control the air pressure in vacuum drying chamber, and drying time is 15~20 hours；
D, the wax pattern surface made from step C is coated with third reinforcing layer：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step C is prepared with silica sol binder；
Then, it carries out manually floating sand by the wax pattern surface of dip-coating slurries with the Malaysia sand of 6~9 mesh, institute should be cleared up after floating sand
State the residual slurry and Malaysia sand in EVA adhesive film；
Wax-pattern is put in vacuum drying chamber and is dried by third, and it is 55~65 degrees Celsius to control the temperature in vacuum drying chamber,
It is 65~95Pa to control the air pressure in vacuum drying chamber, and drying time is 12~15 hours；
E, the wax pattern surface made from step D is coated with the 4th slurry seal layer：
First, the slurries that the Malaysia powder of the wax pattern surface dip-coating made from step D is prepared with silica sol binder；
Then, the residual slurry in the EVA adhesive film is cleared up；
Wax-pattern after artificial floating sand is put under the wind speed of 1.1~1.2 meter per seconds and is dried by third, and drying time is 12~36
Hour；
(iv) it dewaxes：Using steam dewaxing, the pressure of steam is 0.6MPa, and the time is 18~55 minutes, and will should first be protected before dewaxing
The EVA adhesive film at warm riser position is removed, and shell mold is made；
(v) shell mold roasts
The shell mold of step (iv) is roasted using temperature-gradient method baking modes, in roasting：It is risen first before 550 degrees Celsius
Secondly warm speed control keeps the temperature 1.5 hours at 550 degrees Celsius, then, is warming up to 1150 at full speed and takes the photograph in 100 degrees Celsius/hour
Family name's degree, and keep 1150 degrees Celsius of half an hours, cooling of finally coming out of the stove；
(vi) using wire cutting machine, (v) shell mold obtained is cut along the centre of each arcuate socket by step；
(vii) it will be fixed, be put into the sandbox prepared by formative technology with adhesive tape after step (vi) the shell mold splicing completely of well cutting, and
The cast gate and insulated feeder in the shell mold for cast are sealed with adhesive tape, the mixed sand by preparation is then placed in, piles mixing
Ram-jolt is carried out with foundry jolter again after sand, forms sand mold；
(viii) by after step (vii) ram-jolt sand mold and sandbox plane strike off, and mould surface at interval of 15cm prick a core,
The core is pricked to from 3~5cm of model surface；
(ix) it pours into a mould
Baking 1 hour or more carried out to shell mold with the air-heater of 300~350 degrees Celsius of constant temperature before cast, when cast, pouring temperature
It it is 1500~1650 degrees Celsius, after cast, casting keeps the temperature 1~2 hour in sand mold；
(x) it after moulding by casting, is demoulded, will successively be removed per part shell mold, and cut off the insulated feeder of casting, obtain casting.
2. the quick firm flange of connection according to claim 1, it is characterised in that：The first flange and second flange
Arcuate socket be three, three arcuate sockets are uniformly arranged.
3. the quick firm flange of connection according to claim 2, it is characterised in that：The first flange and second flange
Opposite both sides are separately installed with pipe joint.
4. the quick firm flange of connection according to claim 3, it is characterised in that：The first flange and second flange
In the mass percent of each ingredient be：C：0.05%, Al: 1.15%,Zn: 0.53%,Si：0.14%, Mn：0.34%, S：≤
0.030%, P：≤ 0.030%, Cr：0.02%, Ni：0.32%, Cu：0.34%, V：0.06%, Mo：0.01%, Ti：0.43%, B：
0.01%, Pd：0.02%,Pt：0.18%, W：0.27%,Ta：0.01%,Nd：0.06%,Ce：0.05%,Eu：0.06%,Lu:
0.12%, Au：0.36%, Ag:0.75%, Ga：0.01%, Y：0.03%, Sn：0.36%, Zr：0.08%, Re：0.04%, Os：0.01%,
Hf：0.04%, Bi：0.14%, glass fibre：0.12%, calcium oxide：0.23%, talcum powder:0.17%, magnesia：0.24%, oxygen
Change copper：0.16%, iron oxide：0.36%, manganese dioxide：0.46%, Kocide SD：0.07%, iron hydroxide：0.12%, hydrogen
Calcium oxide：0.17%, barium hydroxide：0.15%, sodium chloride：0.04%, calcium carbonate：0.17%, potassium nitrate：0.32%, chlorination
Magnesium：0.23%, calcium chloride：0.07%, potassium chlorate：0.16%, surplus Fe.
5. the quick firm flange of connection according to claim 3, it is characterised in that：The first flange and second flange
In the mass percent of each ingredient be：C：0.08%, Al: 1.33%,Zn: 0.61%,Si：0.18%, Mn：0.42%, S：≤
0.030%, P：≤ 0.030%, Cr：0.04%, Ni：0.42%, Cu：0.37%, V：0.08%, Mo：0.02%, Ti：0.47%, B：
0.02%, Pd：0.03%,Pt：0.19%, W：0.29%,Ta：0.02%,Nd：0.07%,Ce：0.06%,Eu：0.07%,Lu:
0.15%, Au：0.46%, Ag:0.85%, Ga：0.02%, Y：0.05%, Sn：0.43%, Zr：0.13%, Re：0.05%, Os：0.02%,
Hf：0.07%, Bi：0.17%, glass fibre：0.16%, calcium oxide：0.26%, talcum powder:0.25%, magnesia：0.29%, oxygen
Change copper：0.18%, iron oxide：0.39%, manganese dioxide：0.49%, Kocide SD：0.09%, iron hydroxide：0.13%, hydrogen
Calcium oxide：0.18%, barium hydroxide：0.16%, sodium chloride：0.06%, calcium carbonate：0.27%, potassium nitrate：0.35%, chlorination
Magnesium：0.28%, calcium chloride：0.09%, potassium chlorate：0.17%, surplus Fe.
6. the quick firm flange of connection described in any claim according to claim 1 to 5, it is characterised in that：It is described
The step of casting technique of first flange and second flange (i) in：B, alloy solution obtained in the previous step is cooled down, it is cooling
When water cooling and air-cooled combination, first use water cooling that alloy solution water cooling is formed alloys to 510 DEG C with the cooling rate of 17 DEG C/s,
Then 355 DEG C are air-cooled to, then uses water cooling with the cooling rate of 14 DEG C/s by alloy water cooling to room temperature.
7. the quick firm flange of connection described in any claim according to claim 1 to 5, it is characterised in that：It is described
The step of casting technique of first flange and second flange (ix) in, before pouring into a mould with the air-heater of 340 degrees Celsius of constant temperature to shell mold into
Row baking 1.5 hours, when cast, pouring temperature is 1550 degrees Celsius, and after cast, casting keeps the temperature 2 hours in sand mold.
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| CN106591729A (en) * | 2016-12-15 | 2017-04-26 | 苏州富艾姆工业设备有限公司 | Straight core-spun yarn friction spinning mechanism |
| CN107055852A (en) * | 2016-12-15 | 2017-08-18 | 苏州纽东精密制造科技有限公司 | A kind of decentralized type sewage treatment and purification device housing |
| CN108253288A (en) * | 2016-12-29 | 2018-07-06 | 石家庄安瑞科气体机械有限公司 | Bundled tube container and gas transport vehicle |
| CN107267868A (en) * | 2017-05-26 | 2017-10-20 | 太仓源壬金属科技有限公司 | A kind of high-performance refractory metal material |
| CN107267872A (en) * | 2017-05-27 | 2017-10-20 | 太仓明仕金属制造有限公司 | A kind of high-performance abrasion-proof stamping parts |
| CN107245659A (en) * | 2017-05-27 | 2017-10-13 | 太仓源壬金属科技有限公司 | A kind of antifriction metal (AFM) steel |
| CN107716866A (en) * | 2017-11-14 | 2018-02-23 | 曹安飞 | A kind of production technology of water-saving closet sewage draining valve |
| CN111500947A (en) * | 2020-05-22 | 2020-08-07 | 烟台南山学院 | Manufacturing process of high-performance metal material |
| CN112945301A (en) * | 2021-02-03 | 2021-06-11 | 南京国中环保工程有限公司 | Intelligent environment on-line monitoring device |
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| SE464798B (en) * | 1973-10-24 | 1991-06-17 | Johnson Matthey Co Ltd | CATALYST CONTAINING A SUBSTRATE, AN INTERMEDIATE OXID LAYER AND A CATALYTIC LAYER |
| DE3167601D1 (en) * | 1980-07-25 | 1985-01-17 | Asahi Chemical Ind | Recording material |
| CN100493778C (en) * | 2006-07-10 | 2009-06-03 | 浙江高中压阀门有限公司 | Sand mould casting method for large-scale high-temperature alloy cast |
| CN104279383A (en) * | 2013-07-09 | 2015-01-14 | 江阴市东升法兰有限公司 | Threaded flange |
| CN104197131A (en) * | 2014-09-24 | 2014-12-10 | 无锡康柏斯机械科技有限公司 | Flange |
| CN105689653A (en) * | 2016-01-19 | 2016-06-22 | 大丰市洪联铸钢有限责任公司 | Casting process for high-temperature water-pressure-resisting combined flange |
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Denomination of invention: A fast and firm flange Effective date of registration: 20220308 Granted publication date: 20180717 Pledgee: Jiangsu Jinmao Financing Guarantee Co.,Ltd. Pledgor: YANCHENG FENG GONG MACHINERY Co.,Ltd. Registration number: Y2022980002235 |