CN102909376A - Fabrication method of high-performance stainless steel lifting hook - Google Patents
Fabrication method of high-performance stainless steel lifting hook Download PDFInfo
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- CN102909376A CN102909376A CN 201210388244 CN201210388244A CN102909376A CN 102909376 A CN102909376 A CN 102909376A CN 201210388244 CN201210388244 CN 201210388244 CN 201210388244 A CN201210388244 A CN 201210388244A CN 102909376 A CN102909376 A CN 102909376A
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Abstract
The invention discloses a fabrication method of a high-performance stainless steel lifting hook, which comprises the following steps of a), material selection and preparation, b), mixing, c), compression moulding, d), high temperature sintering and e), postprocessing. The fabrication method of the high-performance stainless steel lifting hook is reasonable in procedure arrangement, simple and convenient to implement and moderate in cost; performances of the fabricated stainless steel lifting hook, such as strength, abrasion resistance and corrosion resistance, are improved significantly, so that the bearing capacity of the lifting hook is higher, and good service performance of the lifting hook can be kept in various severe and complicated working environments.
Description
Technical field
The present invention relates to a kind of preparation method of stainless steel suspension hook, it is high to relate in particular to a kind of intensity, and the preparation method of the high-performance stainless steel suspension hook wear-resisting, that corrosion resisting property is good belongs to the stainless steel products technical field.
Background technology
Suspender is to hang the device of getting weight in the hoisting machinery, and hanging and getting the most frequently used suspender of work piece is suspension hook, and relative accessory has suspension ring, hoisting suction cup, clamp and pallet fork etc.Wherein, hoisting suction cup, clamp and pallet fork are used on crane, can be used as special hanger and use for a long time, also can be used as auxiliary lifting appliance and hang over Interim use on the suspension hook, to improve operating efficiency.The suspender of crawl bulk material is generally jaw grab bucket to be opened/closed, and also available magnechuck is drawn such as magnetic conductivity materials such as borings; Hang the suspender of getting flowable materials commonly used the bucket of Sheng and cage are arranged, generally by canting or take out the mode such as bottom plug and draw off molten steel or chemical solution, draw off the flowable materials such as concrete by opening the cage bottom door.
Suspension hook is part important in the suspender, is subject to the downward active force that the deadweight of goods and suspender produces in the handling process of goods, so that suspension hook necessity will have enough intensity and rigidity; Simultaneously, have friction between suspension hook and the round-link chain, add that temperature and humidity changes greatly in the working environment of hook, therefore, suspension hook also need possess good wear-resisting type and corrosion resistance.To sum up, common irony alloy suspension hook is difficult to satisfy the performance requirement of suspension hook comprehensively, and therefore, the stainless steel suspender arises at the historic moment, but existing stainless steel suspension hook Shortcomings also aspect intensity can not comprehensively be promoted the use of.
Summary of the invention
For the demand, the invention provides a kind of preparation method of high-performance stainless steel suspension hook, this preparation method's procedure arrangement is reasonable, be easy to implement, cost is moderate, the performance of stainless steel suspension hook at aspects such as intensity, wearability and corrosion resistances that makes is significantly improved, so that the use of suspension hook is safer, reliable, uses more extensive.
The present invention is a kind of preparation method of high-performance stainless steel suspension hook, and this preparation method comprises the steps: that a) selection is got the raw materials ready, and b) batch mixing is c) compressing, d) high temperature sintering, e) post processing.
In a preferred embodiment of the present invention, in the described step a), the main component of raw material is: nickel powder, chromium powder, manganese powder, molybdenum powder, silica flour, refractory carbide, plasticizer and iron powder; Raw material obtains the spherical powder of variable grain degree respectively by ball mill grinding, screening.
In a preferred embodiment of the present invention, in the described step b), mixing equipment is selected high energy ball mill, its process of lapping is as follows: at first, grind the compound of nickel powder, chromium powder, refractory carbide and molybdenum powder, milling time is controlled at 7-8 hour, and the cylinder revolution is set to 40 rev/mins; Then, add silica flour, iron powder and plasticizer, the time of again grinding is controlled at 3-4 hour, and the cylinder revolution is set to 20 rev/mins.
In a preferred embodiment of the present invention, in the described step c), this operation adopts warm compaction process, and preparation process comprises filling, compacting and the demoulding; Wherein, lubricant can be selected fatty acid calcium, polyvinyl alcohol, polyurethane etc.; Temperature in the pressing process is controlled at 130 ℃-140 ℃, and pressure is 200-250MPa.
In a preferred embodiment of the present invention, in the described step d), agglomerating plant protective atmosphere sintering furnace, methane and propane are selected in combustion gas, and sintering temperature is controlled at 1200 ℃-1300 ℃, and sintering time is 8-10 hour.
In a preferred embodiment of the present invention, in the described step e), postprocessing working procedures comprises finishing, quenching, tempering and immersion oil; Wherein, hardening heat is controlled at 750 ℃-780 ℃, and the type of cooling is oil cooling; Temperature is controlled at 220 ℃-260 ℃, and the type of cooling is slow cooling in the stove.
The present invention has disclosed a kind of preparation method of high-performance stainless steel suspension hook, this preparation method's procedure arrangement is reasonable, be easy to implement, cost is moderate, the performance of stainless steel suspension hook at aspects such as intensity, wearability and corrosion resistances that makes is significantly improved, so that the bearing capacity of suspension hook is stronger, can in various abominable, complicated working environments, keep good serviceability.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the preparation method's of embodiment of the invention high-performance stainless steel suspension hook process figure;
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
Fig. 1 is the preparation method's of embodiment of the invention high-performance stainless steel suspension hook process figure; This preparation method comprises the steps: that a) selection is got the raw materials ready, and b) batch mixing is c) compressing, d) high temperature sintering, e) post processing.
Embodiment 1
The preparation method's of the high-performance stainless steel suspension hook that the present invention mentions concrete preparation process is as follows:
A) selection is got the raw materials ready, and the main component of raw material and percentage composition thereof are: nickel powder 8%, chromium powder 6%, manganese powder 10%, molybdenum powder 4%, silica flour 4%, refractory carbide 6%, and plasticizer 6%, all the other are iron powder; Raw material is respectively by ball mill grinding, screening, the granularity of the nickel powder that obtains, chromium powder, manganese powder, molybdenum powder and silica flour is about 300 orders, the granularity of refractory carbide is 600 orders, and the particle of iron powder is 200 orders, and phosphorus content is controlled at 0.6%-0.8% in the iron powder; It is spherical that the particle of powder roughly is; Plasticizer is selected chlorinated paraffin wax 70, and granularity is about 100 orders; The refractory metal compound is selected WC powder;
B) batch mixing, mixing equipment is selected high energy ball mill, and its process of lapping is as follows: at first, grind the compound of nickel powder, chromium powder, refractory carbide and molybdenum powder, milling time is controlled at 7 hours, and the cylinder revolution is set to 40 rev/mins; Then, add silica flour, iron powder and plasticizer, the time of again grinding is controlled at 3 hours, and the cylinder revolution is set to 20 rev/mins;
C) compressing, adopt warm compaction process, preparation process comprises filling, compacting and the demoulding; Make before filling with lubricator to reduce the frictional force between powder and the die wall, reduce the pressure loss when filling, lubricant can be selected fatty acid calcium, polyvinyl alcohol, polyurethane etc.; Temperature in the pressing process is controlled at 130 ℃, and pressure is 220MPa;
D) high temperature sintering, agglomerating plant protective atmosphere sintering furnace, methane and propane are selected in combustion gas, and sintering temperature is controlled at 1200 ℃, and sintering time is 9 hours; Behind the sintering, suspension hook density reachable 7.2g.cm
E) post processing, postprocessing working procedures comprise finishing, quenching, tempering and immersion oil; Wherein, hardening heat is controlled at 750 ℃-760 ℃, and the type of cooling is oil cooling; Temperature is controlled at 220 ℃-240 ℃, and the type of cooling is slow cooling in the stove.
Embodiment 2
The preparation method's of the high-performance stainless steel suspension hook that the present invention mentions concrete preparation process is as follows:
A) selection is got the raw materials ready, and the main component of raw material and percentage composition thereof are: nickel powder 9%, chromium powder 7%, manganese powder 8%, molybdenum powder 4%, silica flour 5%, refractory carbide 7%, and plasticizer 7%, all the other are iron powder; Raw material is respectively by ball mill grinding, screening, the granularity of the nickel powder that obtains, chromium powder, manganese powder, molybdenum powder and silica flour is about 350 orders, the granularity of refractory carbide is 650 orders, and the particle of iron powder is 250 orders, and phosphorus content is controlled at 0.6%-0.7% in the iron powder; It is spherical that the particle of powder roughly is; Plasticizer is selected chlorinated paraffin wax 70, and granularity is about 100 orders; The refractory metal compound is selected the TiC powder;
B) batch mixing, mixing equipment is selected high energy ball mill, and its process of lapping is as follows: at first, grind the compound of nickel powder, chromium powder, refractory carbide and molybdenum powder, milling time is controlled at 8 hours, and the cylinder revolution is set to 40 rev/mins; Then, add silica flour, iron powder and plasticizer, the time of again grinding is controlled at 4 hours, and the cylinder revolution is set to 20 rev/mins;
C) compressing, adopt warm compaction process, preparation process comprises filling, compacting and the demoulding; Make before filling with lubricator to reduce the frictional force between powder and the die wall, reduce the pressure loss when filling, lubricant can be selected fatty acid calcium, polyvinyl alcohol, polyurethane etc.; Temperature in the pressing process is controlled at 140 ℃, and pressure is 240MPa;
D) high temperature sintering, agglomerating plant protective atmosphere sintering furnace, methane and propane are selected in combustion gas, and sintering temperature is controlled at 1300 ℃, and sintering time is 8 hours; Behind the sintering, suspension hook density reachable 7.3g.cm
E) post processing, postprocessing working procedures comprise finishing, quenching, tempering and immersion oil; Wherein, hardening heat is controlled at 780 ℃, and the type of cooling is oil cooling; Temperature is controlled at 240 ℃-260 ℃, and the type of cooling is slow cooling in the stove.
The present invention has disclosed a kind of preparation method of high-performance stainless steel suspension hook, be characterized in: this preparation method's procedure arrangement is reasonable, be easy to implement, cost is moderate, the performance of stainless steel suspension hook at aspects such as intensity, wearability and corrosion resistances that makes is significantly improved, so that the bearing capacity of suspension hook is stronger, can in various abominable, complicated working environments, keep good serviceability.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (6)
1. the preparation method of a high-performance stainless steel suspension hook is characterized in that, this preparation method comprises the steps: that a) selection is got the raw materials ready, and b) batch mixing is c) compressing, d) high temperature sintering, e) post processing.
2. the preparation method of high-performance stainless steel suspension hook according to claim 1 is characterized in that, in the described step a), the main component of raw material is: nickel powder, chromium powder, manganese powder, molybdenum powder, silica flour, refractory carbide, plasticizer and iron powder; Raw material obtains the spherical powder of variable grain degree respectively by ball mill grinding, screening.
3. the preparation method of high-performance stainless steel suspension hook according to claim 1, it is characterized in that, in the described step b), mixing equipment is selected high energy ball mill, its process of lapping is as follows: at first, grind the compound of nickel powder, chromium powder, refractory carbide and molybdenum powder, milling time is controlled at 7-8 hour, and the cylinder revolution is set to 40 rev/mins; Then, add silica flour, iron powder and plasticizer, the time of again grinding is controlled at 3-4 hour, and the cylinder revolution is set to 20 rev/mins.
4. the preparation method of high-performance stainless steel suspension hook according to claim 1 is characterized in that, in the described step c), this operation adopts warm compaction process, and preparation process comprises filling, compacting and the demoulding; Wherein, lubricant can be selected fatty acid calcium, polyvinyl alcohol, polyurethane etc.; Temperature in the pressing process is controlled at 130 ℃-140 ℃, and pressure is 200-250MPa.
5. the preparation method of high-performance stainless steel suspension hook according to claim 1 is characterized in that, in the described step d); agglomerating plant protective atmosphere sintering furnace; methane and propane are selected in combustion gas, and sintering temperature is controlled at 1200 ℃-1300 ℃, and sintering time is 8-10 hour.
6. the preparation method of high-performance stainless steel suspension hook according to claim 5 is characterized in that, in the described step e), postprocessing working procedures comprises finishing, quenching, tempering and immersion oil; Wherein, hardening heat is controlled at 750 ℃-780 ℃, and the type of cooling is oil cooling; Temperature is controlled at 220 ℃-260 ℃, and the type of cooling is slow cooling in the stove.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639405A (en) * | 2013-12-03 | 2014-03-19 | 江苏大学 | Metal matrix high temperature self-lubricating composite material and manufacturing method thereof |
| CN104399982A (en) * | 2014-10-30 | 2015-03-11 | 苏州广型模具有限公司 | Novel preparing method of wire drawing mold core |
| CN107287532A (en) * | 2017-06-29 | 2017-10-24 | 浙江创特新材科技有限公司 | A kind of high-strength stainless steel powdered metallurgical material and preparation method thereof |
| CN108044111A (en) * | 2017-12-26 | 2018-05-18 | 苏州贝尔纳德铁路设备有限公司 | A kind of preparation method of hydraulic tamping machine stent |
| CN108188388A (en) * | 2017-12-29 | 2018-06-22 | 中国第汽车股份有限公司 | A kind of powder injection-molded material of stainless steel metal for fuel injector ball seat |
-
2012
- 2012-10-15 CN CN 201210388244 patent/CN102909376A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639405A (en) * | 2013-12-03 | 2014-03-19 | 江苏大学 | Metal matrix high temperature self-lubricating composite material and manufacturing method thereof |
| CN104399982A (en) * | 2014-10-30 | 2015-03-11 | 苏州广型模具有限公司 | Novel preparing method of wire drawing mold core |
| CN107287532A (en) * | 2017-06-29 | 2017-10-24 | 浙江创特新材科技有限公司 | A kind of high-strength stainless steel powdered metallurgical material and preparation method thereof |
| CN108044111A (en) * | 2017-12-26 | 2018-05-18 | 苏州贝尔纳德铁路设备有限公司 | A kind of preparation method of hydraulic tamping machine stent |
| CN108188388A (en) * | 2017-12-29 | 2018-06-22 | 中国第汽车股份有限公司 | A kind of powder injection-molded material of stainless steel metal for fuel injector ball seat |
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Application publication date: 20130206 |