CN105458225A - Bi-metal alloy hammer casting technology and metal mold - Google Patents
Bi-metal alloy hammer casting technology and metal mold Download PDFInfo
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- CN105458225A CN105458225A CN201410451372.6A CN201410451372A CN105458225A CN 105458225 A CN105458225 A CN 105458225A CN 201410451372 A CN201410451372 A CN 201410451372A CN 105458225 A CN105458225 A CN 105458225A
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Abstract
The invention discloses a bi-metal alloy hammer one-time molding casting technology. The casting technology is characterized in that a metal mold for casting a bi-metal alloy hammer serves as a casting outer mold, and heat preservation belt grooves are formed in the bi-metal combining joint of the mold; internal densener is installed in the mold, and pouring is conducted through the same pouring channel of an upper riser; the metal mold is composed of an upper riser, a left half mold, a right half mold, the internal densener, a sand core and a compound mold fixing frame, the left half mold and the right half mold are provided with heat preservation belt grooves and an overflow hole, and the left half mold is provided with internal densener installing holes and a sand core installing hole. When the metal mold is used, heat preservation belts, the upper riser and the sand core are made of molding sand; then, the internal densener is installed, refractory coating is painted, the mold is closed, the sand core is installed, and the upper riser is put; finally, the complete bi-metal alloy hammer casting metal mold is formed. According to the bi-metal alloy hammer once molding casting technology, the same pouring channel is adopted in bi-metal casting, the process is easy, the time and effort are saved, and molten steel is saved; the casting technology has the advantages that the mold can be reused, a small amount of molding sand is used, the production space is saved, exhaust pollutants are not produced, and casting dead angles are avoided.
Description
Technical field
the invention belongs to casting field, relate to foundry engieering and metal die, be specially a kind of bimetallic alloy hammer one-shot forming foundry engieering and metal die.
Background technology
at present, composite alloy hammer for hammer type crusher, comprises tup and hammer handle.Wherein, hammer handle is cast by mild steel, and tup is cast by rich chromium cast iron, and be composited mainly with castingin, the brave mode of mechanical combination, Rong between tup and hammer handle, casting mould mostly is lost foam casting, sand casting.Prior art makes alloy hammer (CN102357387A etc.) several shortcoming: one is that existing foundry engieering mostly is tup and hammer handle is cast respectively, and then compound, and complex process is time-consuming; Two is mostly be gradation casting or adopt biliquid two running channel etc. easily to cause molten steel to waste; Three is that existing foundry engieering very easily produces exhaust emission environment, and the place, space that founding molding takies is large, produces a large amount of antiquated sand simultaneously, reuses cumbersome; Four be casting cycle easily cause punching to mix, in conjunction with defects such as bad, cold shut and crackles, cause tup and hammer handle bonding strength inadequate, be easy to rupture, and tup model is larger, gets over easy fracture.
Summary of the invention
for solving the problem, the invention provides a kind of bimetallic alloy hammer one-shot forming foundry engieering and metal die, it is achieved by the following technical solution:
A kind of bimetallic alloy hammer metal mold for casting, be made up of upper rising head, left half module, right half module, internal densener, core, matched moulds fixed mount six part, left and right half module and upper riser metal part material are foundry iron, internal densener and matched moulds fixed mount material are mild steel, and core and upper rising head inner materials are molding sand.Upper riser metal part is square tubular, and profile size and left half module, that right half module merges upper back profile is in the same size, and square-shaped hopper shape made by inside molding sand, and namely upper rising head is the unified sprue channel open of double-fluid double metal, is also used as feeding simultaneously; Size, profile design that die cavity after left half module and the combination of right half module is hammered into shape according to alloy are determined, wherein tup is on top, and hammer handle is in bottom; Left half module and right half module are provided with one section of insulation belt groove at tup and hammer handle binding site, and insulation belt gash depth is generally 1 centimetre, and width is 3-5 centimetre, and the thickness of the insulation belt of formation and height suitably adjust according to the size of alloy hammer; After left half module, right half module merge, the corresponding side, insulation belt centre position of crevice place is provided with spout hole, and spout hole respectively accounts for half and penetrates insulation belt and communicates with die cavity on the half module of left and right; Two internal densener installing holes are had below left half module insulation belt; The axis hole position of left half module bottom hammer handle is provided with core installing hole; The axis hole position of right half module bottom hammer handle is provided with core locating slot; Left half module is provided with the mould location column for matched moulds at the periphery with right half module contact surface, and the right half module in relevant position is provided with the mould locating hole for matched moulds; Internal densener top is circular shape, bottom is square, the locating dowel that lower weld two is supporting with left half module internal densener installing hole, two through holes be arranged above and below are had in the middle of internal densener, after the position of upper and lower two through holes should make internal densener install, upper through hole is positioned at the tup part of die cavity, and lower through hole is positioned at hammer handle part, internal densener plays Quench simultaneously and is connected tup and hammer handle effect, and the thickness of internal densener is determined with large few size design hammered into shape according to alloy; Core molding sand makes, and profile is cylindric, and can blow water-glass sand method with carbon dioxide and make, the axle core that size is hammered into shape according to alloy is determined; Matched moulds fixed mount adopts the fastening form of jackscrew, and the Left-side support frame interposition of fixed mount is equipped with openwork part, inserts core from here after being convenient to matched moulds, Right side support frame is installed jackscrew for closing tight left and right half module.
A kind of bimetallic alloy hammer one-shot forming foundry engieering, it is characterized in that using above-mentioned bimetallic alloy to hammer metal mold for casting into shape for casting external mold, mould bimetallic binding site and tup and hammer handle binding site arrange insulation belt groove, mould inside installs internal densener, in employing, rising head unifies running channel casting, and its concrete steps comprise:
Step 1: according to alloy hammer weight size requirements, produces the metallic member of the upper rising head of metal die, left half module, right half module, internal densener, matched moulds fixed mount in conjunction with above-mentioned bimetallic alloy hammer metal mold for casting characteristic Design.
Step 2: make insulation belt, bimetallic alloy is hammered into shape a metal mold for casting left side, right half module keeps flat, get the water-glass sand mixed and fill up the reserved insulation belt groove of mould, with instrument, water-glass sand is floating, remove unnecessary water-glass sand, make water-glass sand can not defectiveness and uneven place, the plane that mould insulation belt is upper and lower can not be exceeded, then the spout hole that insulation belt place is arranged is opened up, harden with carbon dioxide air blast, if metal die be just cast also have surplus heat after product is taken apart reuse mould, also carbon dioxide can be blown, the waste heat of mould during casting is utilized to carry out oven dry sclerosis to water-glass sand.
Step 3: rising head in making.Upper riser metal outs open is kept flat upward, mid portion puts the infundibulate sprue channel open mould made in advance according to alloy hammer size, be located in the middle of rising head, upper rising head is filled with the water-glass sand mixed, fill up floating rear carbon dioxide air blast sclerosis, take out sprue channel open mould, complete rising head and make.
Step 4: make axis hole core.Make tubular core mold in advance according to alloy hammer shaft hole diameter size, fill the water-glass sand mixed and then harden with carbon dioxide air blast, open core mold and complete the making of axis hole core, or use routine techniques to make satisfactory axis hole core.
Step 5: spray fireproof coating.Ready-made upper rising head, left half module, right half model cavity segment and core are sprayed one deck fireproof coating, prevents foundry goods sticking to mould and high-temperature molten steel mold damage.
Step 6: combination metal die.The left half module completing above-mentioned preparation installs internal densener, internal densener after installation should be positioned at the central authorities of die cavity, for preventing departing from, can the chock pad of the good size of use amount between internal densener and left half module, chock is extracted out after internal densener is in place, then the mould location column on left half module is aimed at the mould locating hole of right half module, merge left and right half module and put into matched moulds fixed mount jackscrew and hold out against, notice that the core installing hole of left half module is positioned over hollow out support side, right half module is positioned over jackscrew side, then axis hole core step 4 made inserts from the core installing hole of left half module, till in the core mounting groove being inserted into right half module, then above the left and right half module upper rising head being positioned over merging, four limit alignment, sprue channel open is just to the central authorities of die cavity, check internal densener, core, fireproof coating, spout hole, left and right half module crack, it is no problem that upper rising head all normally puts in place, so far the combination of mould is completed.
Step 7: melting.Furnace charge is weighed by processing compound and puts into smelting furnace and heat, make furnace charge melt into liquid.The present invention relates to double-fluid double metal casting, so use two electrosmelting of intermediate frequency, put into mild steel furnace charge in a stove, tapping temperature controls at 1600-1620 DEG C, and put into rich chromium cast iron furnace charge in another stove, tapping temperature controls at 1480-1500 DEG C.
Step 8: casting.Slowly pour low-carbon (LC) molten steel into from upper rising head, stop when molten steel flows out from spout hole, block spout hole with fire-resistant earth, slowly pour rich chromium cast iron molten metal into again second every 3-30, stop to when filling upper rising head.In upper rising head, molten iron is used for feeding.
Step 9: die sinking process.After foundry goods suitably cools, unclamp matched moulds fixed mount jackscrew, rap metal die and removable left and right half module, after naturally cooling to environment temperature, simple process is once carried out to foundry goods, remove cast(ing) surface foreign matter, alloy hammer dead head feeding part, relief grinding burr and fash.
Step 10: heat treatment.Use routine techniques to carry out 1000 DEG C of quenchings, 320 DEG C of temper, complete the casting of alloy hammer.
The invention has the beneficial effects as follows: a kind of bimetallic alloy hammer foundry engieering and metal die, compared to existing technology, one is do not need to repeat to make sand mo(u)ld, uses metal die to reuse, improve mould utilization factor and service efficiency, save production space; Two is use upper running channel casting, is convenient to observe inner case; Three is that double-fluid double metal adopts same running channel, saves molten steel; Four is the one-shot formings of alloy hammer tup hammer handle, makes that operating procedure is easier, saving of work and time, to enhance productivity; Five is settings of metal die insulation belt, makes the metallurgical binding of tup hammer handle binding site bimetal liquid more abundant, not easily occurs cold shut and crackle; Six is that metal die heat absorption itself adds the chilling action of internal densener, effectively can improve the alloy density of institute's cast alloy hammer and hardness and not easily cause rushing of tup and hammer handle molten metal mixed; Seven is do not have exhaust emission environmental problem, meets current environmental protection trend; Eight is that not easily to produce casting dead angle finished product rate high, not easily produces substandard products and waste product.
Accompanying drawing explanation
fig. 1 is upper rising head top view.
Fig. 2 is that Figure 1A-A is to sectional view.
Fig. 3 is that Figure 1B-B is to sectional view.
Fig. 4 is left half module front view.
Fig. 5 is that Fig. 4 C-C is to sectional view.
Fig. 6 is Fig. 4 top view.
Fig. 7 is right half module front view.
Fig. 8 is that Fig. 7 D-D is to sectional view.
Fig. 9 is Fig. 7 top view.
Figure 10 is internal densener front view.
Figure 11 is that Figure 10 E-E is to sectional view.
Figure 12 is Figure 10 upward view.
Figure 13 is core front view.
Figure 14 is that Figure 13 F-F is to sectional view.
Figure 15 is matched moulds fixed mount front view.
Figure 16 is that Figure 15 G-G is to sectional view.
Figure 17 is Figure 15 top view.
Figure 18 is that schematic diagram is looked on a metal die package assembly left side.
Figure 19 is metal die package assembly schematic top plan view.
Figure 20 is metal die package assembly front elevational schematic.
In figure: 1. go up rising head, 2. molding sand, 3. goes up sprue channel open, 4. spout hole, 5. mould location column, 6. insulation belt groove, 7. left half module, 8. internal densener installing hole, 9. core installing hole, 10. right half module, 11. core locating slots, 12. mould locating holes, 13. internal densener through holes, 14. internal denseners, 15. internal densener locating dowels, 16. cores, 17. matched moulds fixed mounts, 18. jackscrew installing holes, 19. jackscrews.
Detailed description of the invention:
By below to the description of embodiment; to more contribute to public understanding the present invention; but the restriction that the specific embodiment that applicant provides can't be considered as technical solution of the present invention, any definition to parts or technical characteristic changes or makes form to overall structure and immaterial conversion all should be considered as the protection domain that limits invention technical scheme.
Shown in Fig. 1 to Figure 20, bimetallic alloy hammer metal mold for casting is made up of upper rising head 1, left half module 7, right half module 10, internal densener 14, core 16, matched moulds fixed mount 17 6 part, left and right half module and upper rising head 1 metallic member material are foundry iron, internal densener 14 and matched moulds fixed mount 17 material are mild steel, and core 16 and upper rising head 1 inner materials are water-glass sand.It is in the same size that upper rising head 1 profile size and left half module 7, right half module 10 merge upper back profile.Inside carbon dioxide blows water-glass sand method and makes sprue channel open 3 on square-shaped hopper shape; Die cavity after left half module 7 and right half module 10 combine is size according to alloy hammer, profile design is determined, wherein tup is on top, and hammer handle is in bottom; Left half module 7 and right half module 10 are provided with insulation belt groove 6 at tup and hammer handle binding site, and insulation belt groove 6 side is communicated with spout hole 4 can make the molten metal exceeding spout hole flow out mould from die cavity; Have two internal densener installing holes 8 below left half module 7 insulation belt groove 6, there is core installing hole 9 the axis hole position of bottom hammer handle; Left half module 7 and right half module 10 contact surface periphery are provided with the mould location column 5 for matched moulds; There is core locating slot 11 the axis hole position of right half module 10 bottom hammer handle; Right half module 10 is provided with the mould locating hole 12 for matched moulds; Internal densener 14 top is circular shape, bottom is square, the locating dowel 15 that lower weld two is supporting with left half module 7 internal densener installing hole 8, two through holes be arranged above and below 13 are had in the middle of internal densener 14, after the position of upper and lower two through holes makes internal densener 14 install, upper through hole is positioned at the tup part of die cavity, and lower through hole is positioned at hammer handle part, and the thickness of internal densener 14 is determined with large few size design hammered into shape according to alloy; Core 16 blows water-glass sand method with carbon dioxide and is made into cylindric; Matched moulds fixed mount 17 adopts the fastening form of jackscrew, the Left-side support frame centre position of fixed mount is openwork part, core 16 is inserted from here after being convenient to matched moulds, Right side support frame is provided with jackscrew installing hole 18, the screw thread of installing hole and aperture and jackscrew supporting, left and right half module is closed tight by the rotary handle rotating jackscrew.Be cast into example with 11kg high-chromium alloy cast-iron hammer below, concrete steps comprise:
Step 1: according to the requirement of 11kg alloy hammer, upper rising head 1 metallic member, left half module 7, right half module 10, internal densener 14, the matched moulds fixed mount 17 of metal die is produced in conjunction with above-mentioned bimetallic alloy hammer metal mold for casting characteristic Design, wherein insulation belt ditch groove depth 1 centimetre, wide 3 centimetres.
Step 2: make insulation belt, left and right half module is kept flat, get the water-glass sand mixed and fill up insulation belt groove 6, with instrument, water-glass sand is floating, remove unnecessary water-glass sand, make water-glass sand can not defectiveness and uneven place, the plane that mould insulation belt is upper and lower can not be exceeded, then open up the spout hole 4 at insulation belt place, harden with carbon dioxide air blast.
Step 3: rising head in making.Keep flat opening up for upper rising head 1 metallic member, mid portion puts the infundibulate sprue channel open mould made in advance according to alloy hammer size, be located in the middle of rising head 1, upper rising head 1 is filled with the water-glass sand mixed, fill up floating rear carbon dioxide air blast sclerosis, take out sprue channel open mould, complete rising head 1 and make.
Step 4: make axis hole core.Make tubular core mold in advance according to alloy hammer shaft hole diameter size, fill the water-glass sand mixed then with the sclerosis of carbon dioxide air blast, open core mold and complete axis hole core 16 and make.
Step 5: spray fireproof coating.Ready-made upper rising head 1, left half module 7, right half module 10 cavity portion and core 16 are sprayed one deck fireproof coating, prevents foundry goods sticking to mould and high-temperature molten steel mold damage.
Step 6: combination metal die.The left half module 7 completing above-mentioned preparation installs internal densener 14, the chock pad of the good size of use amount is between internal densener 14 and left half module 7, chock is extracted out after internal densener 14 is in place, then the mould location column 5 on left half module 7 is aimed at the mould locating hole 12 of right half module 10, merge left and right half module and put into matched moulds fixed mount 17 jackscrew 19 and hold out against, notice that the core installing hole 9 of left half module is positioned over hollow out support side, right half module is positioned over jackscrew 19 side, then axis hole core 16 is inserted into the core mounting groove 11 of right half module 10 from the core installing hole 9 of left half module 7, then above the left and right half module upper rising head 1 being positioned over merging, four limit alignment, upper sprue channel open 3 is just to the central authorities of die cavity, check internal densener 14, core 16, fireproof coating, spout hole 4, left and right half module crack, whether upper rising head 1 normally puts in place, so far the combination of mould is completed.
Step 7: melting.Furnace charge is weighed by processing compound and puts into smelting furnace and heat, furnace charge is made to melt into metal liquid, the present embodiment uses two middle frequency furnaces, mild steel furnace charge (mass fraction of carbon is 0.3-0.5%) is put in a stove, molten steel tapping temperature controls at 1600-1620 DEG C, put into rich chromium cast iron furnace charge (mass fraction of carbon is 2.6%-2.9%, and the mass fraction of chromium is 15%-20%) in another stove, molten iron tapping temperature controls at 1480-1500 DEG C.
Step 8: casting.From upper rising head 1, sprue channel open 3 slowly pours low-carbon (LC) molten steel into, stops, blocking spout hole 4, slowly pour rich chromium cast iron water into again second every 3-15 from upper sprue channel open 3 with fire-resistant earth when molten steel flows out from spout hole 4, stops to when filling upper rising head 1.
Step 9: die sinking process.After foundry goods suitably cools, unclamp matched moulds fixed mount jackscrew 19, rap metal die and removable left and right half module, mold temperature is about 100 DEG C time, cleaning left and right half module, then again fills up floating water-glass sand, the waste heat of mould can be utilized to complete the making of insulation belt in insulation belt groove 6, use next time in order to mould, the step making insulation belt carbon dioxide and blow can be saved; Foundry goods carries out simple process to foundry goods after naturally cooling to environment temperature, removes cast(ing) surface foreign matter, alloy hammer dead head feeding part, relief grinding burr and fash.
Step 10: heat treatment.Use routine techniques to carry out 1000 DEG C of quenchings, 320 DEG C of temper, the casting of alloy hammer completes.
The present invention is suitable for the Foundry Production of the heavy larger 30-80kg high alloy hammer of hammer equally.
The present invention is suitable for the casting of high alloy steel hammer too.
According to our company, the use feedback of user hammered into shape by knowhow and alloy for many years, the present invention is in same alloy content situation, the density of casting alloy hammer, hardness, abrasion resistance, fused layer metallurgical binding intensity are all high than the product of other casting technique, long service life, not easy fracture.
Claims (7)
1. a bimetallic alloy hammer one-shot forming foundry engieering, it is characterized in that using bimetallic alloy hammer metal mold for casting for casting external mold, mould bimetallic binding site and tup and hammer handle binding site arrange insulation belt groove, mould inside installs internal densener, in employing, rising head unifies running channel casting, and its concrete steps comprise:
Step 1: according to alloy hammer weight size requirements, design bimetallic alloy hammer metal mold for casting;
Step 2: make insulation belt, gets the insulation belt groove that the water-glass sand mixed fills up bimetallic alloy hammer metal mold for casting, and water-glass sand is floating, removes unnecessary water-glass sand, opens up spout hole, harden with carbon dioxide air blast;
Step 3: rising head in making, according to the infundibulate sprue channel open mould that alloy hammer size makes in advance, fills upper rising head with the water-glass sand mixed, with the sclerosis of carbon dioxide air blast, produces rising head in infundibulate;
Step 4: make axis hole core, is made into cylindric axis hole core according to alloy hammer shaft hole diameter size water-glass sand carbon dioxide air blast;
Step 5: spray fireproof coating, has sprayed fireproof coating by upper rising head, left half module, right half model cavity segment and core, has prevented foundry goods sticking to mould and high-temperature molten steel mold damage;
Step 6: combination metal die, on above-mentioned preparation basis, internal densener is installed in the internal densener installing hole of left half module, internal densener is made to be positioned at the central authorities of die cavity, by left half module, right half module is to quasi merger, put into matched moulds fixed mount jackscrew to hold out against, axis hole core step 4 made is inserted into the core mounting groove of right half module by left half module core installing hole, upper rising head is positioned on the left and right half module of merging, four limit alignment, check internal densener, core, fireproof coating, spout hole, left and right half module crack, upper rising head is all no problem, complete the combination of mould,
Step 7: melting, rich chromium cast iron, mild steel raw material are weighed by processing compound and puts into two smelting furnaces respectively and heat, furnace charge is made to melt into metal liquid, two smelting furnace tapping temperatures are different, mild steel smelting furnace tapping temperature controls at 1600-1620 DEG C, and rich chromium cast iron smelting furnace tapping temperature controls at 1480-1500 DEG C;
Step 8: casting, slowly pours low-carbon (LC) molten steel into from upper rising head, stops, blocking spout hole, slowly pour rich chromium cast iron molten metal into again second, stop to when filling upper rising head every 3-30 with fire-resistant earth when molten steel flows out from spout hole;
Step 9: die sinking process and heat treatment, uses routine techniques to carry out the later process of die sinking, then carries out 1000 DEG C of quenchings, 320 DEG C of tempering, complete the casting of alloy hammer.
2. bimetallic alloy hammer metal mold for casting according to claim 1, it is characterized in that: a kind of bimetallic alloy hammer metal mold for casting, be made up of upper rising head, left half module, right half module, internal densener, core, matched moulds fixed mount six part, cavity design tup is on top, and hammer handle is in bottom; Left half module and right half module are provided with insulation belt at tup and hammer handle binding site; After left half module, right half module merge, the corresponding side, insulation belt centre position of crevice place is provided with spout hole, and spout hole respectively accounts for half and penetrates insulation belt and communicates with die cavity on the half module of left and right; Left half module has two internal densener installing holes; The axis hole position of left half module bottom hammer handle is provided with core installing hole; The axis hole position of right half module bottom hammer handle is provided with core locating slot; Left half module is provided with the mould location column for matched moulds at the periphery with right half module contact surface, and the right half module in relevant position is provided with the mould locating hole for matched moulds; First make upper rising head, insulation belt and core with molding sand during use for subsequent use, then internal densener locating dowel is inserted in the internal densener installing hole of left half module, make internal densener be positioned at the centre position of the rear die cavity of alloy hammer left and right half module merging; Again the mould location column on left half module is aimed at the mould locating hole on right half module, be combined and be put on matched moulds fixed mount, rotate jackscrew, left and right half module is made fully to close tightly, again core is inserted in the core locating slot of right half module from hollow out position on the left of matched moulds fixed mount along the core installing hole of left half module, then upper rising head is put on left and right half module after merging, four limits alignment, sprue channel open is placed in the middle, forms a complete bimetallic alloy and hammers cast metal mould into shape.
3. insulation belt according to claim 1, is characterized in that: described insulation belt thickness is generally 1 centimetre, is highly 3-5 centimetre, and the thickness of insulation belt and height suitably adjust according to the size of alloy hammer.
4. internal densener according to claim 1, it is characterized in that: described internal densener material is mild steel, profile top is circular shape, the square welding in bottom two locating dowels, have two through holes be arranged above and below in the middle of internal densener, after the position of upper and lower two through holes should make internal densener install, upper through hole is positioned at the tup part of die cavity, lower through hole is positioned at hammer handle part, and the thickness of internal densener is determined with large few size design hammered into shape according to alloy.
5. go up rising head according to claim 1, it is characterized in that: upper riser metal part is square tubular, material is foundry iron, profile size and left half module, that right half module merges upper back profile is in the same size, square-shaped hopper shape made by inside molding sand, namely upper rising head is the unified sprue channel open of double-fluid double metal, is also used as feeding simultaneously.
6. matched moulds fixed mount according to claim 1, it is characterized in that: described matched moulds fixed mount adopts the fastening form of jackscrew, material is mild steel, the Left-side support frame interposition of fixed mount is equipped with openwork part, during use, the core installing hole of left half module aims at matched moulds fixed mount hollow out support side, and right half module is positioned over matched moulds fixed mount jackscrew side, inserts core after being convenient to matched moulds, Right side support frame is provided with jackscrew installing hole, and left and right half module can close tight by the jackscrew rotated on Right side support frame.
7. left half module according to claim 2, right half module, is characterized in that: described left half module, right half module, and material is foundry iron.
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| CN111195711A (en) * | 2020-01-14 | 2020-05-26 | 中信重工机械股份有限公司 | Bimetal compounding method of gyratory crusher lining plate |
| CN111906277A (en) * | 2020-07-02 | 2020-11-10 | 山西钢合力新材料科技有限公司 | Production method of bimetal composite pipe blank |
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| CN107866525A (en) * | 2017-11-30 | 2018-04-03 | 重庆市铭鼎机械制造有限公司 | A kind of casting method for workpiece |
| CN108339944A (en) * | 2018-04-27 | 2018-07-31 | 遵义江星机械模具有限公司 | For the molding casting mould of water pump vane |
| CN111195711A (en) * | 2020-01-14 | 2020-05-26 | 中信重工机械股份有限公司 | Bimetal compounding method of gyratory crusher lining plate |
| CN111195711B (en) * | 2020-01-14 | 2021-07-06 | 中信重工机械股份有限公司 | Bimetal compounding method of gyratory crusher lining plate |
| CN111906277A (en) * | 2020-07-02 | 2020-11-10 | 山西钢合力新材料科技有限公司 | Production method of bimetal composite pipe blank |
| CN111906277B (en) * | 2020-07-02 | 2021-11-02 | 山西钢合力新材料科技有限公司 | Production method of bimetal composite pipe blank |
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