CN103753458B - Mill type spanner and production method thereof - Google Patents
Mill type spanner and production method thereof Download PDFInfo
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- CN103753458B CN103753458B CN201410024687.2A CN201410024687A CN103753458B CN 103753458 B CN103753458 B CN 103753458B CN 201410024687 A CN201410024687 A CN 201410024687A CN 103753458 B CN103753458 B CN 103753458B
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- spanner
- sleeve
- connecting rod
- movable rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
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- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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Abstract
The invention relates to a mill type spanner and a production method thereof. The mill type spanner comprises a sleeve, a spanner link and a hand held rod which is perpendicular to the spanner link. A moving link is arranged between the sleeve and the spanner link. One end of the moving link is fixed on the sleeve in an inserted manner, and the other end is hinged to the head end of the spanner link. The hand held rod is located at the tail end of the spanner link integrally and is perpendicular to the moving link. The sleeve, the spanner link, the hand held rod and the moving link are made of chrome vanadium steel. The mill type spanner is reasonable in design, convenient to use, labor saving, high in mechanical properties and long in service life.
Description
Technical field
The invention belongs to hardware & tools technical field, relate to a kind of spanner and preparation method thereof, particularly relate to one and to turn a millstone formula spanner and preparation method thereof.
Background technology
Spanner is a kind of conventional installation and removal instrument.Utilize lever principle to twist bolt, screw, nut and other screw threads and tightly hold the opening of bolt or nut or the hand tools of trepanning firmware.Spanner is usually shaped with clamp holder portion and applies external force shank and apply external force in the one or both ends of shank, just can twist opening or trepanning that bolt or nut hold bolt or nut.During use, threadingly direction of rotation applies external force at shank, just can twist bolt or nut.
Conventional spanner in the market mainly contains fork spanner, monkey wrench, box spanner etc.The work that those spanners can complete nut screwing clamping in the ordinary course of things or unscrew, but under space-constrained working environment, those spanners can not carry out 360 ° of rotations in the process of nutting.Existing most of box spanner comprises the sleeve and spanner connecting rod that are connected as a single entity, and the shape of spanner connecting rod is in " straight rod type ".Above-mentioned socket wrench structure design is unreasonable, comparatively large and workman often needs to use larger power when using this box spanner processing cost, so just easily make spanner rod deformation or spanner connecting rod is broken disconnected, in operation, need the relative position often between adjustment spanner and nut, spanner is used cumbersome, reduce operating efficiency.In addition, use spanner convenient for allowing workman, someone is equipped with hand-held pole vertically disposed with spanner connecting rod at spanner connecting rod end, use when spanner at needs, first by jacket casing on nut, then hand-held pole is inserted spanner connecting rod end, after spanner uses, hand-held pole is removed and is easy to be placed into corner on one side by workman, so just easily causes hand-held pole to be lost, designs unreasonable and affect operating efficiency.
And the more spanner that circulates on the market mostly at present is and adopts carbon steel to make, and mechanical performance and quality are general, hardness and wearability poor.After using for a long time, there will be comparatively serious abrasion and corrosion phenomenon, cause screens to be forbidden, spanner operates inflexible phenomenon, and the service life of spanner is shorter.
In sum, for solving the deficiency on existing spanner structure and material, need design a kind of reasonable in design, be easy to use, laborsaving and good mechanical property, long service life turn a millstone formula spanner.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of reasonable in design, be easy to use, formula of the turning a millstone spanner of laborsaving and good mechanical property, long service life.
Object of the present invention realizes by following technical proposal: one is turned a millstone formula spanner, comprise sleeve, spanner connecting rod and hand-held pole vertically disposed with spanner connecting rod, movable rod is provided with between described sleeve and spanner connecting rod, described movable rod one end is inserted solid on sleeve, the other end and spanner connecting rod head end are articulated and connected, described hand-held pole is positioned at spanner connecting rod end and is connected as a single entity with spanner connecting rod, and described hand-held pole is vertical with movable rod to be arranged; Wherein, the material of described sleeve, spanner connecting rod, hand-held pole and movable rod is chrome-vanadium steel, and described chrome-vanadium steel is grouped into by the one-tenth of following mass percent: C:0.3-0.4%, Cr:5.5-6.5%, V:1.0-1.6%, Cu:0.2-0.4%, Si:0.4-0.55%, Mn:0.9-1.1%, Ti:0.01-0.04%, S≤0.03%, P≤0.03%, surplus is Fe and inevitable impurity element.
As preferably, the end face that described movable rod faces sleeve extends to form bumping square to sleeve direction, described sleeve section offers the square opening matched with bumping square on the end face of movable rod, the end face that described movable rod faces spanner connecting rod extends to form screw rod to spanner connecting rod direction and screw rod runs through by spanner connecting rod head end, described screw rod is provided with hold-down nut, and described bumping square and screw rod divide and are listed in movable rod both sides.
As preferably, the end face that described sleeve deviates from movable rod offers the nut trepan for tightening or unscrew work nut.
As preferably, the material of described sleeve, spanner connecting rod, hand-held pole and movable rod is chrome-vanadium steel, and described chrome-vanadium steel is grouped into by the one-tenth of following mass percent: C:0.32-0.36%, Cr:5.8-6.2%, V:1.2-1.5%, Cu:0.2-0.3%, Si:0.4-0.45%, Mn:0.9-1.0%, Ti:0.02-0.04%, S≤0.03%, P≤0.03%, surplus is Fe and inevitable impurity element.
C is one of key element affecting chrome-vanadium steel mechanical performance, especially obvious on the impact of chrome-vanadium steel hardness and impact flexibility.The hardness of chrome-vanadium steel significantly rises along with the increase of carbon content, but reducing by a relatively large margin then appears in its impact flexibility.Having higher impact flexibility while having higher hardness to make chrome-vanadium steel, showing after deliberation, it is comparatively suitable that C content controls in the scope of 0.3-0.4%.
Cr forms one of important element of high rigidity carbide with the C in chrome-vanadium steel.The common solution strengthening body tissue of other alloying element in it and chrome-vanadium steel, also improves quenching degree and the corrosion resistance of chrome-vanadium steel simultaneously.The hardness of chrome-vanadium steel increases substantially with the increase of Cr/C, and impact flexibility then first raises and reduces afterwards.For obtaining optimal hardness, impact flexibility, comprehensive anti-wear performance, show after deliberation, it is ideal that Cr content controls effect within the scope of 5.5-6.5%.
V is the element strongly forming high rigidity carbide, and energy thinning microstructure crystal grain, improve temper resistance; Improve impact flexibility simultaneously and suppress temper brittleness.Show after deliberation, the chrome-vanadium steel performance that V content controls to obtain within the scope of 1.0-1.6% by the present invention is ideal.
Cu is the essential element of solution strengthening matrix, and Cu can improve the quenching degree of chrome-vanadium steel simultaneously.For making chrome-vanadium steel have higher combination property, it is comparatively suitable that Cu content controls within the scope of 0.2-0.4% by the present invention.
Si holds the one of the chief elements that enhanced tissue body improves chrome-vanadium steel intensity significantly admittedly.But Si content addition can not be too high, otherwise chrome-vanadium steel fragility can be made to strengthen, make the comprehensive mechanical performance after chrome-vanadium steel heat treatment significantly reduce simultaneously.Show after deliberation, Si content is controlled in scope of the invention effect better.
Mn expands material austenite phase field, is also one of element improving chrome-vanadium steel quenching degree and intensity.If Mn content adds too high, significantly can increase remained austenite content, reduce the hardness of chrome-vanadium steel.Therefore, the addition of Mn controls in the scope of 0.9-1.1% by the present invention.
In chrome-vanadium steel of the present invention, add the strong thinning microstructure product grain of Ti energy of trace, significantly improve the impact flexibility of chrome-vanadium steel, but if Ti addition is too much, then formula of the turning a millstone spanner in use easier brittle failure that chrome-vanadium steel can be used to make.Therefore, after research, determine the addition of Ti to control within the scope of the present invention.
Another object of the present invention is the preparation method providing above-mentioned formula spanner of turning a millstone, and described preparation method comprises the following steps:
S1: take vanadium iron, ferrochrome, ferrosilicon, ferromanganese and ferrotianium by the constituent of above-mentioned chrome-vanadium steel and mass percent;
S2: add slag former in smelting furnace, skim after load melting, then the above-mentioned ferrochrome that weighs up and vanadium iron are added in smelting furnace, ferrosilicon and ferromanganese is added after its fusing, to come out of the stove after whole fusing cast, tapping temperature is 1600-1680 DEG C, before coming out of the stove, the ferrotianium pulverized is put into casting ladle;
S3: by the mold heated of sleeve, spanner connecting rod, hand-held pole and movable rod to 260-430 DEG C, then poured in mould by above-mentioned molten steel and pour into sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank, pouring temperature is 1580-1620 DEG C;
S4: above-mentioned obtained sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank are heat-treated, obtain sleeve, spanner connecting rod, hand-held pole and movable rod, finally sleeve, spanner connecting rod, hand-held pole and movable rod are assembled into final products and turn a millstone formula spanner.
As preferably, the slag former described in step S2 is one or more in lime stone, quartz sand, cullet, dolomite, lime.In steelmaking process, add slag former, form slag, enter slag after the impurity in steel is separated, because slag light specific gravity, float on molten steel, just than being easier to removing.Slag can also protect molten steel discord air directly to contact in addition, can also reduce phosphorus content, reduce the content of sulphur, phosphorus etc.
As preferably, in step S3, the poly-slag agent of quality of molten steel 0.1-0.3% shed immediately by molten steel on molten steel surface after pouring mould into.Poly-slag agent can make remaining slag assemble rapidly, and energy is cleaning molten steel further, forms one layer of heat preservation cover layer simultaneously, is conducive to sleeve, spanner connecting rod, hand-held pole and movable rod moulding by casting.
As preferably, the heat treatment described in step S4 comprises Quench and temper.
As preferably, described quenching under 950-1030 DEG C of condition, first carries out mist to quench 4-8min, and then wind is quenched 12-18min.
As preferably, described temperature is 260-300 DEG C, and tempering time is 3-5h.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect: reasonable in design, and hand-held pole and spanner connecting rod are connected as a single entity, and makes hand-held pole be not easy lose and spanner can be made more convenient to use and comfortable; Sleeve is connected with spanner connecting rod by movable rod, facilitates the actual demand of workman's foundation to change sleeve, is convenient to clean and improves operating efficiency; In use procedure, compared to the spanner of " straight rod type " in prior art, in the present invention, substantially L-shaped or " J " shape of the shape of spanner, so just makes the arm of force between hand-held pole and sleeve elongated, make workman use spanner more laborsaving, decrease the breakage rate of spanner; Spanner connecting rod is articulated and connected by screw rod, hold-down nut and movable rod, installs and changes all more convenient; Sleeve and movable rod structure are simply, reasonable in design, and processing is got up more convenient, has saved cost; Sleeve, spanner connecting rod, hand-held pole and movable rod adopt chrome-vanadium steel material to make, and the constituent of chrome-vanadium steel of the present invention and mass percent compatibility reasonable, the final products made turn a millstone that formula spanner hardness is high, impact flexibility good, wearability and decay resistance good, abrasion and corrosion will be caused seriously to cause screens inaccurate because of Long-Time Service in use procedure, extend the service life of formula spanner of turning a millstone.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the explosive view of a preferred embodiment of the present invention.
Fig. 3 is the structural representation of a preferred embodiment of the present invention middle sleeve.
Fig. 4 is the sectional view at A-A place in Fig. 3.
Reference numeral: 10, sleeve; 11, square opening; 12, nut trepan; 20, spanner connecting rod; 30, hand-held pole; 40, movable rod; 41, bumping square; 42, screw rod; 50, hold-down nut.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, originally formula of turning a millstone spanner comprises sleeve 10, spanner connecting rod 20 and hand-held pole 30 vertically disposed with spanner connecting rod 20, movable rod 40 is provided with between sleeve 10 and spanner connecting rod 20, movable rod 40 one end is inserted solid on sleeve 10, the other end and spanner connecting rod 20 head end are articulated and connected, hand-held pole 30 is positioned at spanner connecting rod 20 end and is connected as a single entity with spanner connecting rod 20, and hand-held pole 30 is vertical with movable rod 40 to be arranged.
Spanner structure is reasonable in design, and hand-held pole 30 and spanner connecting rod 20 are connected as a single entity, and makes hand-held pole 30 be not easy lose and spanner can be made more convenient to use and comfortable; Sleeve 10 is connected with spanner connecting rod 20 by movable rod 40, facilitates the actual demand of workman's foundation to change sleeve 10, is convenient to clean and improves operating efficiency; In use procedure, compared to the spanner of " straight rod type " in prior art, substantially L-shaped or " J " shape of the shape of spanner in this case.As shown in Figure 1, L1 is similar to the torque arm length of spanner in prior art, and L2 is the torque arm length of spanner in this case, and the structural design of this case makes the arm of force between hand-held pole 30 and sleeve 10 elongated, make workman use spanner more laborsaving, decrease the breakage rate of spanner.
Preferably, the end face that movable rod 40 faces sleeve 10 extends to form bumping square 41 to sleeve 10 direction, as shown in Figure 3 and Figure 4, the end face that sleeve 10 faces movable rod 40 offers the square opening 11 matched with bumping square 41.In use procedure, movable rod 40 is inserted solid in square opening 11 by bumping square 41, reasonable in design and easy for installation.The end face that movable rod 40 faces spanner connecting rod 20 extends to form screw rod 42 to spanner connecting rod 20 direction and screw rod 42 runs through by spanner connecting rod 20 head end, and screw rod 42 is provided with hold-down nut 50, bumping square 41 and screw rod 42 points are listed in movable rod 40 both sides.Spanner connecting rod 20 is articulated and connected with movable rod 40 by screw rod 42, hold-down nut 50, installs and changes all more convenient.
Further preferably, the end face that sleeve 10 deviates from movable rod 40 offers the nut trepan 12 for tightening or unscrew work nut, sleeve 10 structure is simple and reasonable in design, and processing is got up more convenient, has saved cost.
Originally formula of turning a millstone spanner in an initial condition, select the size of sleeve 10 according to work nut size before work, then sleeve 10 is put on the work nut that need turn, promote hand-held pole 30, active force passes on spanner connecting rod 20 by hand-held pole 30, and active force passes on movable rod 40 by spanner connecting rod 20 again, spanner connecting rod 20 drives movable rod 40 to rotate, and then movable rod 40 is with moving sleeve 10 to rotate, thus the work nut of 10 li, sleeve is rotated, complete the action turning work nut.
The advantage that this case can arbitrarily can change size in conjunction with sleeve 10 and the method for turning a millstone ancient times, the formula spanner that makes originally to turn a millstone can realize 360 ° of rotations under the working environment of limited space, flexibly very convenient in use procedure, effectively improve operating efficiency, time saving and energy saving.
Wherein, the material of sleeve 10 of the present invention, spanner connecting rod 20, hand-held pole 30 and movable rod 40 is chrome-vanadium steel, and described chrome-vanadium steel is grouped into by the one-tenth of following mass percent: C:0.3-0.4%, Cr:5.5-6.5%, V:1.0-1.6%, Cu:0.2-0.4%, Si:0.4-0.55%, Mn:0.9-1.1%, Ti:0.01-0.04%, S≤0.03%, P≤0.03%, surplus is Fe and inevitable impurity element.
The constituent of table 1 embodiment of the present invention 1-4 chrome-vanadium steel and mass percent thereof
Embodiment 1:
Vanadium iron, ferrochrome, ferrosilicon, ferromanganese and ferrotianium is taken by the constituent of chrome-vanadium steel in table 1 embodiment 1 and mass percent.In smelting furnace, add the composite fluxing medium of lime stone, quartz sand and cullet composition simultaneously, skim after load melting, then the above-mentioned ferrochrome that weighs up and vanadium iron are added in smelting furnace, ferrosilicon and ferromanganese is added after its fusing, to come out of the stove after whole fusing cast, tapping temperature is 1600 DEG C, before coming out of the stove, the ferrotianium pulverized is put into casting ladle.By the mold heated to 260 DEG C of sleeve, spanner connecting rod, hand-held pole and movable rod while melting, then poured in mould by above-mentioned molten steel and pour into sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank, pouring temperature is 1580 DEG C.The poly-slag agent of quality of molten steel 0.1% shed immediately by molten steel on molten steel surface after pouring mould into, remaining slag is assembled rapidly, and energy is cleaning molten steel further, forms one layer of heat preservation cover layer simultaneously, is conducive to moulding by casting.Then obtained sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank are heat-treated, heat treatment comprises Quench and temper.Wherein, quenching under 950 DEG C of conditions, first carries out mist to quench 4min, and then wind is quenched 18min, and temperature is 260 DEG C, and tempering time is 5h, obtained sleeve, spanner connecting rod, hand-held pole and movable rod.Finally sleeve, spanner connecting rod, hand-held pole and movable rod are assembled into final products to turn a millstone formula spanner.
Embodiment 2:
Vanadium iron, ferrochrome, ferrosilicon, ferromanganese and ferrotianium is taken by the constituent of chrome-vanadium steel in table 1 embodiment 2 and mass percent.In smelting furnace, add the composite fluxing medium of lime stone, dolomite and lime composition simultaneously, skim after load melting, then the above-mentioned ferrochrome that weighs up and vanadium iron are added in smelting furnace, ferrosilicon and ferromanganese is added after its fusing, to come out of the stove after whole fusing cast, tapping temperature is 1628 DEG C, before coming out of the stove, the ferrotianium pulverized is put into casting ladle.By the mold heated to 285 DEG C of sleeve, spanner connecting rod, hand-held pole and movable rod while melting, then poured in mould by above-mentioned molten steel and pour into sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank, pouring temperature is 1595 DEG C.The poly-slag agent of quality of molten steel 0.2% shed immediately by molten steel on molten steel surface after pouring mould into, remaining slag is assembled rapidly, and energy is cleaning molten steel further, forms one layer of heat preservation cover layer simultaneously, is conducive to moulding by casting.Then obtained sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank are heat-treated, heat treatment comprises Quench and temper.Wherein, quenching under 980 DEG C of conditions, first carries out mist to quench 6min, and then wind is quenched 16min, and temperature is 280 DEG C, and tempering time is 4h, obtained sleeve, spanner connecting rod, hand-held pole and movable rod.Finally sleeve, spanner connecting rod, hand-held pole and movable rod are assembled into final products to turn a millstone formula spanner.
Embodiment 3:
Vanadium iron, ferrochrome, ferrosilicon, ferromanganese and ferrotianium is taken by the constituent of chrome-vanadium steel in table 1 embodiment 3 and mass percent.In smelting furnace, add the composite fluxing medium of quartz sand, cullet and dolomite composition simultaneously, skim after load melting, then the above-mentioned ferrochrome that weighs up and vanadium iron are added in smelting furnace, ferrosilicon and ferromanganese is added after its fusing, to come out of the stove after whole fusing cast, tapping temperature is 1665 DEG C, before coming out of the stove, the ferrotianium pulverized is put into casting ladle.By the mold heated to 375 DEG C of sleeve, spanner connecting rod, hand-held pole and movable rod while melting, then poured in mould by above-mentioned molten steel and pour into sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank, pouring temperature is 1600 DEG C.The poly-slag agent of quality of molten steel 0.3% shed immediately by molten steel on molten steel surface after pouring mould into, remaining slag is assembled rapidly, and energy is cleaning molten steel further, forms one layer of heat preservation cover layer simultaneously, is conducive to moulding by casting.Then obtained sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank are heat-treated, heat treatment comprises Quench and temper.Wherein, quenching under 1010 DEG C of conditions, first carries out mist to quench 5min, and then wind is quenched 14min, and temperature is 290 DEG C, and tempering time is 4h, obtained sleeve, spanner connecting rod, hand-held pole and movable rod.Finally sleeve, spanner connecting rod, hand-held pole and movable rod are assembled into final products to turn a millstone formula spanner.
Embodiment 4:
Vanadium iron, ferrochrome, ferrosilicon, ferromanganese and ferrotianium is taken by the constituent of chrome-vanadium steel in table 1 embodiment 4 and mass percent.In smelting furnace, add the composite fluxing medium of lime stone, quartz sand and cullet composition simultaneously, skim after load melting, then the above-mentioned ferrochrome that weighs up and vanadium iron are added in smelting furnace, ferrosilicon and ferromanganese is added after its fusing, to come out of the stove after whole fusing cast, tapping temperature is 1680 DEG C, before coming out of the stove, the ferrotianium pulverized is put into casting ladle.By the mold heated to 430 DEG C of sleeve, spanner connecting rod, hand-held pole and movable rod while melting, then poured in mould by above-mentioned molten steel and pour into sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank, pouring temperature is 1620 DEG C.The poly-slag agent of quality of molten steel 0.2% shed immediately by molten steel on molten steel surface after pouring mould into, remaining slag is assembled rapidly, and energy is cleaning molten steel further, forms one layer of heat preservation cover layer simultaneously, is conducive to moulding by casting.Then obtained sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank are heat-treated, heat treatment comprises Quench and temper.Wherein, quenching under 1030 DEG C of conditions, first carries out mist to quench 8min, and then wind is quenched 12min, and temperature is 300 DEG C, and tempering time is 3h, obtained sleeve, spanner connecting rod, hand-held pole and movable rod.Finally sleeve, spanner connecting rod, hand-held pole and movable rod are assembled into final products to turn a millstone formula spanner.
Formula of the turning a millstone spanner that embodiment of the present invention 1-4 is obtained carries out performance test, and test result is as shown in table 2.
Formula of the turning a millstone spanner the performance test results that table 2 embodiment of the present invention 1-4 is obtained
Can learn from table 2, what the present invention obtained turn a millstone, and formula spanner hardness is high, impact flexibility good, and wearability and corrosion resistance are good, abrasion and corrosion will be caused seriously to cause screens inaccurate because of Long-Time Service, extend the service life of formula spanner of turning a millstone in use procedure.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although made a detailed description the present invention and quoted some specific embodiments as proof, to those skilled in the art, only otherwise it is obvious for leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (10)
1. a formula spanner of turning a millstone, comprise sleeve, spanner connecting rod and hand-held pole vertically disposed with spanner connecting rod, it is characterized in that, movable rod is provided with between described sleeve and spanner connecting rod, described movable rod one end is inserted solid on sleeve, the other end and spanner connecting rod head end are articulated and connected, and described hand-held pole is positioned at spanner connecting rod end and is connected as a single entity with spanner connecting rod, and described hand-held pole is vertical with movable rod to be arranged; Wherein, the material of described sleeve, spanner connecting rod, hand-held pole and movable rod is chrome-vanadium steel, and described chrome-vanadium steel is grouped into by the one-tenth of following mass percent: C:0.3-0.4%, Cr:5.5-6.5%, V:1.0-1.6%, Cu:0.2-0.4%, Si:0.4-0.55%, Mn:0.9-1.1%, Ti:0.01-0.04%, S≤0.03%, P≤0.03%, surplus is Fe and inevitable impurity element.
2. one according to claim 1 is turned a millstone formula spanner, it is characterized in that, the end face that described movable rod faces sleeve extends to form bumping square to sleeve direction, described sleeve section offers the square opening matched with bumping square on the end face of movable rod, the end face that described movable rod faces spanner connecting rod extends to form screw rod to spanner connecting rod direction and screw rod runs through by spanner connecting rod head end, described screw rod is provided with hold-down nut, and described bumping square and screw rod divide and are listed in movable rod both sides.
3. one according to claim 1 and 2 is turned a millstone formula spanner, it is characterized in that, the end face that described sleeve deviates from movable rod offers the nut trepan for tightening or unscrew work nut.
4. one according to claim 1 is turned a millstone formula spanner, and it is characterized in that, the material of described sleeve, spanner connecting rod, hand-held pole and movable rod is chrome-vanadium steel, described chrome-vanadium steel is grouped into by the one-tenth of following mass percent: C:0.32-0.36%, Cr:5.8-6.2%, V:1.2-1.5%, Cu:0.2-0.3%, Si:0.4-0.45%, Mn:0.9-1.0%, Ti:0.02-0.04%, S≤0.03%, P≤0.03%, surplus is Fe and inevitable impurity element.
5. a preparation method for formula of turning a millstone spanner, is characterized in that, described preparation method comprises the following steps:
S1: take vanadium iron, ferrochrome, ferrosilicon, ferromanganese and ferrotianium by the constituent of chrome-vanadium steel according to claim 1 and mass percent;
S2: add slag former in smelting furnace, skim after load melting, then the above-mentioned ferrochrome that weighs up and vanadium iron are added in smelting furnace, ferrosilicon and ferromanganese is added after its fusing, to come out of the stove after whole fusing cast, tapping temperature is 1600-1680 DEG C, before coming out of the stove, the ferrotianium pulverized is put into casting ladle;
S3: by the mold heated of sleeve, spanner connecting rod, hand-held pole and movable rod to 260-430 DEG C, then poured in mould by above-mentioned molten steel and pour into sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank, pouring temperature is 1580-1620 DEG C;
S4: above-mentioned obtained sleeve blank, spanner connecting rod blank, hand-held pole blank and movable rod blank are heat-treated, obtain sleeve, spanner connecting rod, hand-held pole and movable rod, finally sleeve, spanner connecting rod, hand-held pole and movable rod are assembled into final products and turn a millstone formula spanner.
6. the preparation method of a kind of formula spanner of turning a millstone according to claim 5, is characterized in that, the slag former described in step S2 is one or more in lime stone, quartz sand, cullet, dolomite, lime.
7. the preparation method of a kind of formula spanner of turning a millstone according to claim 5, is characterized in that, in step S3, the poly-slag agent of quality of molten steel 0.1-0.3% shed immediately by molten steel on molten steel surface after pouring mould into.
8. the preparation method of a kind of formula spanner of turning a millstone according to claim 5, it is characterized in that, the heat treatment described in step S4 comprises Quench and temper.
9. the preparation method of a kind of formula spanner of turning a millstone according to claim 8, is characterized in that, described quenching under 950-1030 DEG C of condition, first carries out mist to quench 4-8min, and then wind is quenched 12-18min.
10. the preparation method of a kind of formula spanner of turning a millstone according to claim 8, it is characterized in that, described temperature is 260-300 DEG C, and tempering time is 3-5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024687.2A CN103753458B (en) | 2014-01-20 | 2014-01-20 | Mill type spanner and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024687.2A CN103753458B (en) | 2014-01-20 | 2014-01-20 | Mill type spanner and production method thereof |
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| CN103753458B true CN103753458B (en) | 2015-05-20 |
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| CN107350997A (en) * | 2017-08-07 | 2017-11-17 | 合肥英源新材料科技有限公司 | A kind of manufacturing process of hardware spanner |
| CN107893194A (en) * | 2017-10-27 | 2018-04-10 | 宁波市鄞州永佳电机工具有限公司 | A kind of high-performance spanner |
| CN113528937A (en) * | 2021-06-09 | 2021-10-22 | 南京钢铁股份有限公司 | Economical steel for hardware tools and manufacturing method thereof |
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| US20090178517A1 (en) * | 2008-01-14 | 2009-07-16 | Kurt Forrester | Nut driver system and method |
| CN201313291Y (en) * | 2008-08-25 | 2009-09-23 | 中冶宝钢技术服务有限公司 | Extendable adjusting movable rotator |
| CN201300383Y (en) * | 2008-12-08 | 2009-09-02 | 孙位彬 | Anchor bar cap nut loosening and tightening spanner |
| CN202071035U (en) * | 2011-05-17 | 2011-12-14 | 肇庆理士电源技术有限公司 | Wrench |
| CN203031511U (en) * | 2013-01-07 | 2013-07-03 | 山东三箭建设工程管理有限公司 | Socket spanner |
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