CN1011868B - Method of enhancing thickness of cast cemented alloy layer - Google Patents
Method of enhancing thickness of cast cemented alloy layerInfo
- Publication number
- CN1011868B CN1011868B CN89106063A CN89106063A CN1011868B CN 1011868 B CN1011868 B CN 1011868B CN 89106063 A CN89106063 A CN 89106063A CN 89106063 A CN89106063 A CN 89106063A CN 1011868 B CN1011868 B CN 1011868B
- Authority
- CN
- China
- Prior art keywords
- alloy
- prefabricated component
- spherula
- binding agent
- waterglass
- 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.)
- Expired
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
Abstract
The present invention relates to a method for enhancing the thickness of a cast cemented alloy layer, which is characterized in that alloy powder with fine grain is added with fusing agents and adhesive, wherein the adhesive is manufactured into spherules of which the particle size is 0.15 to 2.0mm in advance and the spherules are baked; then the baked spherules and the adhesive are used for manufacturing alloy prefabricated parts in sheet shape or other shapes and are baked; the baked alloy prefabricated parts are arranged on a casting inner wall, and then mother metal fusing liquid is cast on the casting inner wall to manufacture a casting part of which the surface is an alloy layer. Compared with the prior art, the thickness of the alloy layer on the surface of the casting part and the service life of the casting part are both enhanced by about one time.
Description
The present invention relates to a kind of on goods, in the goods, casting around the goods, these goods become the some of product; Be used to make lining or clad, as the casting of antifriction metal (AFM).
Directly make the foundry goods of surface alloying, started a new approach, have many superiority for the wearability, corrosion resistance and the hear resistance that improve foundry goods with casting.Method commonly used be adhere to, paste alloy powder solid or brushing on the particular surface of casting mold, pour into a mould the base metals liquation then, and utilize its heat that the surface alloy powder smelting is combined with base metals, thereby form the alloy-layer of property at cast(ing) surface.Adopt the necessary prepared beforehand alloy prefabricated component of barbola work, this prefabricated component is made up of alloy powder, flux, binding agent/alloy powder, binding agent, makes sheet/other shapes.
The alloy powder that preparation alloy prefabricated component is used, with reference to anti-friction material alloying principle, the alloying element that wear-resistant casting surface alloying is selected for use adds W, Mo, V, Ti, Mn, B etc. based on Cr; Improving corrosion proof element is Cr, Ni, Cu, and wherein Cr, Cu have heat resistance simultaneously concurrently.Usually with Cr-Fe as research object.Alloy powder except that adopting ferroalloy and pure element, powder such as also useful carbide, boride, nitride.Powder size is 0.06～1.4mm, and granularity has remarkable influence to penetration depth, and the fine size penetration depth is shallow, and diameter can not form alloy-layer less than the alloy powder of 0.06mm, and granularity is excessive then can not to be melted fully by the mother metal liquation.
The effect of binding agent is that alloying pellet is bonded together, and makes the alloy prefabricated component have certain intensity, avoids being broken up by the mother metal liquation when cast, improves the wellability between mother metal liquation and the alloy prefabricated component simultaneously.Binding agent such as waterglass, powdered phenol-formaldehyde resin etc. commonly used.
The effect of flux is to make it not oxidized at cast initial stage parcel alloying pellet, can remove the oxide-film on alloy powder surface during melted by heat, and cleaning alloy powder surface is to increase the wetting capacity of mother metal liquation to the alloy prefabricated component.Flux commonly used has borax, ammonium fluoride etc.
The kind of the composition (proportioning, granularity, binding agent, flux etc.) of the alloy layer thickness that cast(ing) surface forms in process of setting and alloy prefabricated component and thickness, pouring temperature, foundry goods size and wall thickness, metallostatic pressure, alloy powder is relevant.
Japan Patent 59-147769 provides a kind of manufacture method of compound casting, the carbide of alloy powder employing antiwear heat resisting, oxide etc., binding agent adopts foamed resin, add the alloy prefabricated component that an amount of water or alcohol are made certain shape, set in advance privileged site at casting mold, inject mother metal liquation (as cast iron, cast steel, aluminium alloy etc.), solidify the foundry goods that after-baking obtains antiwear heat resisting.
There is following defective in the foundry goods of existing method manufacturing:
1, the thickness of its alloy-layer generally is no more than 10mm, owing to thickness limits influences service life of foundry goods, can not satisfy some working condition requirement.
2, used alloy powder granularity must be greater than 0.06mm, otherwise can not form alloy-layer, causes granularity can't utilize less than the alloy powder of 0.06mm and causes waste.Its reason is that alloy powder is meticulous, and alloy prefabricated component inner pore is little and tortuous, and flow resistance is big, can't infilter.
3, easily produce the defective of pore, slag inclusion in the alloy-layer.
Task of the present invention is to provide a kind of and increases the cast(ing) surface alloy layer thickness and can make full use of the alloy powder of granularity less than 0.06mm, improves the method for thickness of cast cemented alloy layer, and made foundry goods has long service life.
The drawing explanation:
Fig. 1 is the spherula enlarged drawing of being made up of alloy powder, flux, binding agent.A-spherula among the figure, A1-alloy powder, A2-flux and binding agent.
Fig. 2 is an alloy prefabricated component shaping schematic view, 1-model among the figure, 2-pressing mold, B-alloy prefabricated component, B1-binding agent.
Fig. 3 is the casting pouring schematic diagram, 3-sandbox among the figure, 4-casting mold cavity, B-alloy prefabricated component.
Fig. 4 is the described tup of embodiment.Fig. 5 is the surface alloying layer metallograph.
Describe content of the present invention in detail below in conjunction with description of drawings.
The solution of the present invention realizes by adopting following measure:
The alloy prefabricated component of forming sheet/other shapes by alloy powder, flux, binding agent/alloy powder, binding agent, place on the casting mold cavity inner wall, inject the mother metal liquation, forming the surface is the foundry goods of alloy-layer, after heat treatment, the thickness that the thickness of its alloy-layer can form greater than existing program significantly is to improve the service life of foundry goods.Place the alloy prefabricated component B of casting mold cavity inner wall, can adopt thin wire or wire netting to support in case of necessity.The alloy prefabricated component of sheet/other shapes adopts following technology to make:
A, as shown in Figure 1, can adopt granularity is that the borax mixing that the alloy powder A1 of 0.006～0.05mm adds (percentage by weight) 2～5% shakeouts, spray an amount of proportion and be waterglass/concentration of 1.08～1.15 and be 0.4～0.7% polyvinyl alcohol, sway the spherula A and the oven dry that form granularity 0.15～2.0mm; Adopting waterglass is the spherula A that binding agent is made, and its bake out temperature is 250～270 ℃, and drying time is 2～3 hours; With the polyvinyl alcohol is the spherula A that binding agent is made, and its bake out temperature is 180～210 ℃, and drying time is 2～3 hours.
B, as shown in Figure 2, spherula A after the oven dry adds powdered phenol-formaldehyde resin, 0.2～0.5% black tropine and proper amount of solvent such as the alcohol that (with respect to spherula A percentage by weight) 10～16%, proportion are 1.20～1.35 waterglass/4～10%, mixing places the alloy prefabricated component B that is pressed into sheet/other shapes in the model 1, takes out alloy prefabricated component B dry for standby.Adopting waterglass is that the alloy prefabricated component B that binding agent is made must be incubated about 1 hour down at 50～90 ℃, is warmed up to about 3 hours of 280～300 ℃ of insulations again; The alloy prefabricated component B that adding powdered phenol-formaldehyde resin, black tropine and alcohol are made must be incubated about 1 hour down at 50～90 ℃, is warmed up to 220～250 ℃ of insulations 1～2 hour again.When alloying prefabricated component B, preferably spherula A is used by its granule size stepping.
Above-mentioned alloy prefabricated component B is arranged in the privileged site of casting mold cavity 4, casting technique is routinely made the foundry goods that the surface has alloy-layer, the thickness of this alloy-layer can reach 15～20mm, select different types of alloy powder, the performance of alloy-layer has nothing in common with each other, specifically decide on working condition requirement, wherein the most frequently used is the Cr-Fe powder.According to quality of parent material and working condition requirement, adopt corresponding Technology for Heating Processing to heat-treat to the foundry goods after the cast.
Comparatively speaking, make the alloy prefabricated component and be called one-step technology if alloy powder, binding agent, flux etc. are carried out one-shot forming, then the present invention is by making spherula earlier, and the technology of making the alloy prefabricated component again can be described as two-step process.For granularity is the alloy powder of 0.06～0.10mm, adopts two-step process also can produce positive effect.
With prior art relatively, this programme has following advantage:
1, make the foundry goods of surface alloying with prior art, thin more its alloying layer thickness of alloy powder is thin more, when alloy powder granularity during less than 0.06mm, can't form alloy-layer; This programme is then opposite, has more bigger hole in the alloy prefabricated component made from two-step method, and thin alloy powder fusing point is relatively low, during fusing between mother metal liquation and alloy powder mutually big the and fusing of impregnability fully, the alloy layer thickness of formation can double.
2, can make full use of the alloy powder of granularity, and prior art is given it up to the meticulous powder of this part less than 0.06mm.
3, owing to adopt fine-grained alloy powder, in alloying process, can form more tissue core, make alloy-layer dense structure, be metallurgical binding between alloy-layer and the mother metal.
4, basic above-mentioned reason is with the foundry goods that this method is made, about can doubling its service life.
Embodiment:
Use method of the present invention and make a kind of pulverizer hammer that is used to pulverize mineral aggregate, the working face that it is 60 * 170mm bent plate shape that this tup contains 1 area.Shade among Fig. 4 partly is an alloy-layer.Adopt the Cr-Fe powder, its granularity is 0.006～0.05mm, weighs 1250 and restrains, and adds borax 40 gram mixings and shakeouts, and spraying concentration is the spherula that 0.5% polyvinyl alcohol forms 1.5mm, dries 2 hours down at 200 ℃.Adding proportion with the spherula after the oven dry is 1.326 waterglass 190 grams, mixing and to be pressed into thickness be that 20mm, area are the alloy prefabricated component of 60 * 170mm, and this prefabricated component is warmed up to 280 ℃ of oven dry 2 hours again 50 ℃ of insulations 1 hour down.
Alloy prefabricated component after the oven dry is placed corresponding site in the casting mold cavity, and pouring temperature is 1320 ℃ a magnesium iron liquation, and cooling is after 900 ℃ of insulations 1 hour, 380 ℃ of isothermal hardening 1.5 hours.After tested, this foundry goods working face place alloy layer thickness is 21mm, and case hardness is HRC68, and the tup that make than existing technology the service life of this product improves more than 1 times.Surface alloy layer cross section structure is shown in Fig. 5.
Claims (1)
1, a kind of method that improves thickness of cast cemented alloy layer, comprise the sheet formed by alloy powder, flux and binding agent or the alloy prefabricated component of other shapes, place on the specific inwall of casting mold cavity, inject the mother metal liquation and make foundry goods, through heat treatment, it is characterized in that: the alloy prefabricated component adopts following technology to make:
A, employing granularity are that the borax mixing of alloy powder adding (percentage by weight) 2～5% of 0.006～0.05mm shakeouts, spray an amount of proportion and be 1.08～1.15 waterglass or concentration and be 0.4～0.7% polyvinyl alcohol, sway and form spherula and the oven dry that granularity is 0.15～2.0mm, the spherula bake out temperature that wherein adopts waterglass to make as binding agent is 250～270 ℃, and drying time is 2～3 hours; With the polyvinyl alcohol is the spherula that binding agent is made, and bake out temperature is 180～210 ℃, and drying time is 2～3 hours;
It is 1.20～1.35 waterglass or 4～10% powdered phenol-formaldehyde resin, 0.2～0.5% black tropine and proper amount of solvent such as alcohol that b, described spherula add (with respect to the spherula percentage by weight) 10～16% proportions, mixing places alloy prefabricated component and the oven dry that is pressed into sheet or other shapes in the model 1, the alloy prefabricated component that wherein adopts waterglass to make as binding agent, must be incubated about 1 hour down at 50～90 ℃, be warmed up to about 3 hours of 280～300 ℃ of insulations again; Add the alloy prefabricated component that phenolic resins, black tropine and alcohol are made, must be incubated about 1 hour down, be warmed up to 220～250 ℃ of insulations 1～2 hour again at 50～90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89106063A CN1011868B (en) | 1989-07-19 | 1989-07-19 | Method of enhancing thickness of cast cemented alloy layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89106063A CN1011868B (en) | 1989-07-19 | 1989-07-19 | Method of enhancing thickness of cast cemented alloy layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039747A CN1039747A (en) | 1990-02-21 |
| CN1011868B true CN1011868B (en) | 1991-03-06 |
Family
ID=4856606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89106063A Expired CN1011868B (en) | 1989-07-19 | 1989-07-19 | Method of enhancing thickness of cast cemented alloy layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011868B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1984501A (en) * | 1999-12-24 | 2001-07-09 | Xiumei Pang | Method for producing a composite coating |
| CN1108211C (en) * | 2000-09-14 | 2003-05-14 | 四川大学 | Cam shaft of iron-base surface composite material and its manufacture |
| CN100384609C (en) * | 2002-11-05 | 2008-04-30 | 鲍志勇 | Casting infiltration method of heating power for preparing composite alloy material with metal base |
| CN100351414C (en) * | 2005-09-05 | 2007-11-28 | 西安交通大学 | Complexing agent for preparing WCp reinforced iron matrix skin layer composite material |
| CN1318629C (en) * | 2005-09-05 | 2007-05-30 | 西安交通大学 | Complexing agent for preparing tungsten carbide granule reinforced steel matrix skin layer composite material |
| CN106041031B (en) * | 2016-07-29 | 2019-06-07 | 河海大学常州校区 | A kind of preparation method of cast(ing) surface high entropy alloy coating |
| CN110773703A (en) * | 2019-10-31 | 2020-02-11 | 山东汇丰铸造科技股份有限公司 | Casting method of surface particle reinforced iron-based composite material winding drum |
| CN114406185B (en) * | 2022-01-13 | 2023-11-14 | 河南科技大学 | Composite material with high-entropy alloy coating on surface and preparation method thereof |
| CN114985708A (en) * | 2022-05-31 | 2022-09-02 | 西安工业大学 | Method for preparing carbide ceramic reinforced steel-based surface composite material by thermal explosion reaction |
-
1989
- 1989-07-19 CN CN89106063A patent/CN1011868B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1039747A (en) | 1990-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5223347A (en) | Creep resistant composite alloys | |
| CN102851597A (en) | Anti-abrasion sink roller shaft sleeve and manufacturing method thereof | |
| CN1011868B (en) | Method of enhancing thickness of cast cemented alloy layer | |
| CN103233223A (en) | Method for cladding TiC enhanced Ni3Al based composite coating on surface of aluminum alloy | |
| CN111440983A (en) | Multi-scale boride enhanced high-temperature aluminum liquid corrosion resistant iron-based material and preparation method thereof | |
| CN108517481A (en) | A kind of the zinc-aluminium magnesium alloy ingot and preparation method of titaniferous | |
| JP2001504165A (en) | Composites with a high proportion of intermetallic phase mainly for frictional objects | |
| US5034283A (en) | Economic fabrication of composite zinc alloys | |
| CN100389221C (en) | High fluidity evaporative pattern casting magnesium alloy and smelting method thereof | |
| KR950014423B1 (en) | A copper-based metal alloy of improved type particularly for the contruction of electronic components | |
| FR2522337A1 (en) | ALLOYED FOUNDS AND THEIR MANUFACTURING PROCESS | |
| CN111206188B (en) | High-boron cast iron-based alloy resistant to molten aluminum corrosion and preparation method thereof | |
| CN110468343B (en) | TiC precipitation reinforced high manganese steel base composite material and preparation process thereof | |
| JP2002275574A (en) | High strength high toughness spheroidal graphite cast iron | |
| CN100558925C (en) | A kind of iron mased monolith of anticorrosion of zinc liquid | |
| JP3133273B2 (en) | Composite centrifugal casting method | |
| CN101239396B (en) | Preparation technique for alloy powder core tube thread in situ generating of abrasion-proof composite material | |
| JPH02173224A (en) | Manufacture of sintered aluminum bronze alloy | |
| JPS5953142B2 (en) | Continuous casting mold | |
| CN101709417B (en) | Magnesium base in-situ composite and preparation method thereof | |
| JP3151556B2 (en) | Composite casting method | |
| JPS6144930B2 (en) | ||
| CN1216169C (en) | Composite transformation processing method for lost foam foundry magnalium series magnesium alloy | |
| CN1039749A (en) | A kind of inlaid type wear-resisting spare parts and manufacture method thereof | |
| JP4020277B2 (en) | Cast iron composite manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |