CN102644647A - Martensite stainless steel anti-theft screw manufactured by quenching hardness-increasing and brittle non-increasing process - Google Patents
Martensite stainless steel anti-theft screw manufactured by quenching hardness-increasing and brittle non-increasing process Download PDFInfo
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- CN102644647A CN102644647A CN2012101385093A CN201210138509A CN102644647A CN 102644647 A CN102644647 A CN 102644647A CN 2012101385093 A CN2012101385093 A CN 2012101385093A CN 201210138509 A CN201210138509 A CN 201210138509A CN 102644647 A CN102644647 A CN 102644647A
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Abstract
The invention discloses a martensite stainless steel anti-theft screw manufactured by a quenching hardness-increasing and brittle non-increasing process, which is installed on a high-voltage electric tower frame, can only be assembled and disassembled by using special tools, and comprises a non-quenched martensite stainless steel anti-theft screw body (11), a screw top bottom surface (32) and a screw top top surface (41) and the like. The 1040 DEG C +-100 DEG C screw body experiencing a tenth conventional time period performs a second conventional oil cooling to 0 DEG C +-40 DEG C (415), and then a third minus 80 DEG C +- 70 DEG C nitrogen freezing is performed on the screw body for 2.5 hours +-2 hours (415). After the martensite stainless steel anti-theft screw is matched with an anti-theft nut and the special assembling and disassembling tools of corresponding specifications and shapes to be used, the martensite stainless steel anti-theft screw can be used for anti-theft and anti-terrorist installation of a large amount of high-voltage outdoor installed electric tower frames and other facilities which are easy to steal and damage by terrorists or fixed installation for the old dismantling and the new replacing, and is remarkable in social benefit.
Description
Technical field
The present invention is the non-standard screw in a kind of fastening piece; After the supporting uses such as the Martensitic Stain Less Steel anti-theft nut that it and corresponding specification, shape, steel and quenching technical are made, assembly and Disassembly special tool; Can be to being installed on outdoor easy robbers such as high-tension electricity steel towers in a large number, being prone to terrifiedly to destroy the antitheft that facility carries out fixed installation of security or tear trade-in open and install and use, its social benefit is obvious.
Background technique
To ending at present; Still lack real effectively, series product such as convenient, the reliable anti-theft screw of antitheft of mounting or dismounting and assembly and Disassembly special tool thereof; Cause and be installed on outdoor easy robber in a large number, be prone to terrifiedly to destroy that facility constantly is stolen and sold etc., it has caused restriction and influence in various degree to people's production, life.
Listed the present invention and existing half anti-theft screw or the non-anti-theft thread part product anti-theft feature background technique table of comparisons below:
Summary of the invention
The objective of the invention is provides a kind of simple in structure for overcoming deficiency of the prior art, and quenching technical is easy, adorns, tears open conveniently, and the reliable the present invention that guards against theft increases with quenching and do not increase the Martensitic Stain Less Steel anti-theft screw technology that crisp technology is made firmly.
The technical solution adopted for the present invention to solve the technical problems is:
The present invention increases with quenching and does not increase the Martensitic Stain Less Steel anti-theft screw that crisp technology is made firmly; Comprise not quenched martensite stainless steel anti-theft screw nail body 11, screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, screw screw top 31, screw top bottom surface 32, screw top excircle tapered wall 33 or screw top epimere excircle tapered wall 34, screw top outer wall hypomere flange excircle tapered wall 35, screw top outer wall hypomere flange excircle tapered wall major diameter end face 36; In the screw top end face 41, screw top end face off-centre in circle shrinkage pool 42, the screw top end face off-centre at the bottom of the circle shrinkage pool 43, in the screw top end face off-centre at the bottom of circle shrinkage pool wall 44 or screw top end face inward recess 51, the screw top end face inward recess 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; The peripheral end face dextrad of screw top endoporus precession concave type top keeps out 61, left retaining wall 62 is kept out on screw top end face dextrad precession concave type top, right slope shape end face 63 is kept out on screw top end face dextrad precession concave type top or the protruding Gao Shiding of the peripheral end face dextrad precession of screw top endoporus keeps out 71, the protruding Gao Shiding of screw top end face dextrad precession keeps out right retaining wall 72, the protruding Gao Shiding of screw top end face dextrad precession keeps out left slope shape end face 73 or the peripheral end face left-hand of screw top endoporus precession concave type top keeps out 81, right retaining wall 82 is kept out on screw top end face left-hand precession concave type top, left slope shape end face 83 is kept out on screw top end face left-hand precession concave type top or the protruding Gao Shiding of the peripheral end face left-hand precession of screw top endoporus keeps out 91, the protruding Gao Shiding of screw top end face left-hand precession keeps out left retaining wall 92, the protruding Gao Shiding of screw top end face left-hand precession keeps out right slope shape end face 93 or peripheral end face " V " font of screw top endoporus is recessed keeps out 101 or the peripheral end face of screw top endoporus " fall V " font is protruding keeps out 111 or the peripheral end face of the screw top endoporus shape of " facing upward first quarter moon " is recessed keeps out 121 or peripheral end face " first quarter moon of the bowing " shape of screw top endoporus is protruding keeps out 131; 311 is holding time; 312 are the vacuum hardening temperature; 216 newly are warming up to 240 ℃ ± 100 ℃ insulation tempering 2.5 hours ± 1.5 hours for non-the present invention to the nail body weight of the 5th conventional period oil cooling to 0 ℃ ± 40 ℃; 217 is that the nail body steel hardness of non-the present invention after 5 conventional period vacuum quenching oil cold-peace tempering reaches 40 ° of Rockwell hardnesss at least; 218 for non-the present invention through the nail body steel after the 5 conventional period vacuum quenching oil cold-peace tempering crisp after fastening anti-theft screw hammer into shape pound easily broken; The conventional vacuum hardening that divides six period different temperatures and different time to the nail of quenched martensite stainless steel anti-theft screw not body 11; Promptly the 1st conventional period is following closely body from 0 ℃ of temperature-rise period 211 that is warming up to 850 ℃ ± 100 ℃; The 2nd conventional period to 850 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 212; The 3rd conventional period the nail body from 850 ℃ ± 100 ℃ temperature-rise periods 213 that continue to be warming up to 1040 ℃ ± 100 ℃; The 4th conventional period to 1040 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 214; The 5th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out the conventional period of the 1st conventional oil cooling to 0 ℃ ± 40 ℃ 215, the 6 to the 5th 1040 ℃ ± 100 ℃ nails body of conventional period carry out nail body behind the 1st conventional oil cooling to 0 ℃ ± 40 ℃ 215 be warming up to again again 850 ℃ ± 100 ℃ 411, the 7 conventional periods of temperature-rise period to 850 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 412; The 8th conventional period continued to be warming up to 1040 ℃ ± 100 ℃ temperature-rise period 413 to 850 ℃ ± 100 ℃ nail bodies; The 9th conventional period to 1040 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hour 414, the 10 conventional period carried out the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 to 1040 ℃ ± 100 ℃ nail bodies, to the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least behind freezing 2.5 hours of the 3rd subzero 80 ℃ ± 70 ℃ nitrogen ± 2 hours 416 increases with quenching and equates before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
The invention has the beneficial effects as follows:
1, the anti-theft nut and the dress of the present invention and corresponding specification, shape, steel and quenching technical, tear supporting use such as special tool open after, can be to being installed on outdoor easy robbers such as high-tension electricity steel towers in a large number, being prone to the terrified facility that destroys and guarding against theft, anti-ly probably fixedly mount or tear open having installed and used of trade-in.
2, the present invention increases through quenching and does not firmly increase crisp technology and process and install the anti-theft screw after fastening, can effectively prevent thief or terrified saboteur and laterally pound screw rod body suddenly with weight and break, split and use quenching steel-tooths such as pipe tongs, monkey wrench to be rolled into, to screw out; Adopt Martensitic Stain Less Steel to make can not get rusty etc., thereby can reach permanent guards against theft fully, anti-purpose probably through quenching.
3, the present invention is simple in structure, and quenching technical is easy, and adorn, tear open conveniently, antitheft, anti-probably reliable, social benefit is obvious.
Description of drawings
Fig. 1 is the 1st kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 2 is the 2nd kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 3 is the 3rd kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 4 is the 4th kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 5 is the 5th kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 6 is the 6th kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 7 is the 7th kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 8 is the 8th kind of embodiment's concrete structure schematic representation of the present invention.
Fig. 9 is the 9th kind of embodiment's concrete structure schematic representation of the present invention.
Figure 10 is the 10th kind of embodiment's concrete structure schematic representation of the present invention.
Figure 11 carries out conventional vacuum hardening schematic representation for non-the present invention to the Martensitic Stain Less Steel anti-theft screw, and it is for offering the map that the present invention contrasts usefulness.
Figure 12 does not increase crisp technology firmly and makes the practical implementation of Martensitic Stain Less Steel anti-theft screw and quench to increase and do not increase crisp method schematic representation firmly for the present invention increases with quenching.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
Fig. 1 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, on screw screw top 31, be provided with screw top bottom surface 32, screw top excircle tapered wall 33, screw top epimere excircle tapered wall 34, screw top outer wall hypomere flange excircle tapered wall 35, screw top outer wall hypomere flange excircle tapered wall major diameter end face 36; On screw top end face 41, be provided with in the screw top end face off-centre in circle shrinkage pool 42, the screw top end face off-centre at the bottom of the circle shrinkage pool 43, circle shrinkage pool wall 44 in the screw top end face off-centre; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 2 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, on screw top end face 41, be provided with in the screw top end face off-centre in circle shrinkage pool 42, the screw top end face off-centre at the bottom of the circle shrinkage pool 43, circle shrinkage pool wall 44 in the screw top end face off-centre; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 3 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; Be provided with on the peripheral end face of screw top endoporus that the peripheral end face dextrad of screw top endoporus precession concave type top keeps out 61, left retaining wall 62 is kept out on screw top end face dextrad precession concave type top, right slope shape end face 63 is kept out on screw top end face dextrad precession concave type top; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 4 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, on screw top end face 41, be provided with in the screw top end face inward recess off-centre at the bottom of circle shrinkage pool 51, the screw top end face inward recess 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; Keep out 71 at the protruding Gao Shiding of the peripheral end face dextrad precession of screw top endoporus, the protruding Gao Shiding of screw top end face dextrad precession keeps out right retaining wall 72, the protruding Gao Shiding of screw top end face dextrad precession keeps out left slope shape end face 73; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 5 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; Be provided with on the peripheral end face of screw top endoporus that the peripheral end face left-hand of screw top endoporus precession concave type top keeps out 81, right retaining wall 82 is kept out on screw top end face left-hand precession concave type top, left slope shape end face 83 is kept out on screw top end face left-hand precession concave type top; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 6 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; Be provided with on the peripheral end face of screw top endoporus that the protruding Gao Shiding of the peripheral end face left-hand precession of screw top endoporus keeps out 91, the protruding Gao Shiding of screw top end face left-hand precession keeps out left retaining wall 92, the protruding Gao Shiding of screw top end face left-hand precession keeps out right slope shape end face 93; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 7 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; Be provided with on the peripheral end face of screw top endoporus that peripheral end face " V " font of screw top endoporus is recessed keeps out 101; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 8 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; On the peripheral end face of screw top endoporus, be provided with the peripheral end face of screw top endoporus " fall V " font is protruding and keep out 111; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Fig. 9 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; On the peripheral end face of screw top endoporus, being provided with the peripheral end face of screw top endoporus " faces upward first quarter moon " shape is recessed and keep out 121; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Figure 10 be not respectively equipped with on the quenched martensite stainless steel anti-theft screw nail body 11 linking body structure screw nail bar 21, screw nail bar screw thread 22, screw nail bar bottom surface 23, be provided with screw top bottom surface 32, screw top excircle tapered wall 33 on the screw screw top 31, be provided with screw top end face inward recess 51, screw top end face inward recess on the screw top end face 41 at the bottom of 52, screw top end face indent hole wall 53, screw top end face indent hole wall screw thread 54; Be provided with on the peripheral end face of screw top endoporus that peripheral end face " first quarter moon of the bowing " shape of screw top endoporus is protruding keeps out 131; To the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Through the 3rd subzero 80 ℃ ± 70 ℃ nitrogen increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least after freezing 2.5 ± 2 hours 416, increase with quenching and equate before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
The Martensitic Stain Less Steel anti-theft screw is carried out on the conventional vacuum hardening schematic representation in the non-the present invention of Figure 11; 311 is holding time; 312 are the vacuum hardening temperature; The conventional vacuum hardening that divides 5 period different temperatures and different time to the nail of quenched martensite stainless steel anti-theft screw not body 11; Promptly the 1st conventional period is following closely body from 0 ℃ of temperature-rise period 211 that is warming up to 850 ℃ ± 100 ℃; The 2nd conventional period to 850 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 212; The 3rd conventional period the nail body from 850 ℃ ± 100 ℃ temperature-rise periods 213 that continue to be warming up to 1040 ℃ ± 100 ℃; The 4th conventional period to 1040 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hour 214, the 5 conventional period carried out oil cooling to 0 ℃ ± 40 ℃ 215 to 1040 ℃ ± 100 ℃ nail bodies, the nail body weight behind the oil cooling to 0 ℃ ± 40 ℃ newly is warming up to 240 ℃ ± 100 ℃ insulation tempering 2.5 hours ± 1.5 hours 216; Non-the present invention after the conventional vacuum quenching oil cold-peace tempering of 5 periods follows closely body steel hardness and reaches 40 ° 217 of Rockwell hardness at least, follows closely the crisp anti-theft screw after fastening of body steel through the non-the present invention after the conventional vacuum quenching oil cold-peace tempering of 5 periods and hammers into shape and pound easily broken 218.The purpose of the conventional vacuum hardening process schematic representation of this non-the present invention of appendix is not increase crisp technology patent of invention firmly and contrast is provided and consults and uses for accompanying drawing 12 quenches to increase.
The practical implementation increase the Martensitic Stain Less Steel anti-theft screw that does not increase crisp technology manufacturing firmly with quenching in Figure 12 the present invention is quenched to increase and is not increased firmly on the crisp method schematic representation; 11 are the nail of quenched martensite stainless steel anti-theft screw not body; 311 is holding time; 312 are the vacuum hardening temperature; The 1st conventional period was followed closely body 11 to quenched martensite stainless steel anti-theft screw not from 0 ℃ of temperature-rise period 211 that is warming up to 850 ℃ ± 100 ℃; The 2nd conventional period to 850 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 212; The 3rd conventional period was continued 850 ℃ ± 100 ℃ nail bodies to be warming up to 1040 ℃ ± 100 ℃ temperature-rise period 213; The 4th conventional period to 1040 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 214; The 5th conventional period was carried out conventional oil cooling to 0 ℃ ± 40 ℃ 215 to 1040 ℃ ± 100 ℃ nail bodies; The 6th conventional period carried out nail body behind the 1st conventional oil cooling to 0 ℃ ± 40 ℃ 215 to the 5th 1040 ℃ ± 100 ℃ nails body of conventional period and is warming up to 850 ℃ ± 100 ℃ temperature-rise period 411 more again; The 7th conventional period to 850 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hours 412; The 8th conventional period continued to be warming up to 1040 ℃ ± 100 ℃ temperature-rise period 413 to 850 ℃ ± 100 ℃ nail bodies; The 9th conventional period to 1040 ℃ ± 100 ℃ nail bodies be incubated 2.5 hours ± 1.5 hour 414, the 10 conventional period carried out the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 to 1040 ℃ ± 100 ℃ nail bodies, to the 10th conventional period to 1040 ℃ ± 100 ℃ nail bodies carry out nail body behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ 415 carried out the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours 416; Increasing the steel hardness that does not increase the Martensitic Stain Less Steel anti-theft screw 417 of crisp technology manufacturing firmly with quenching and reach 40 ° 418 of Rockwell hardness at least behind freezing 2.5 hours of the 3rd subzero 80 ℃ ± 70 ℃ nitrogen ± 2 hours 416 increases with quenching and equates before the steel toughness of the Martensitic Stain Less Steel anti-theft screw 417 that does not increase crisp technology manufacturing firmly and the quenching or close anti-theft screw after fastening is not pounded suddenly with iron hammer and can be ruptured 419.
Claims (1)
1. one kind increases with quenching and firmly not to increase the Martensitic Stain Less Steel anti-theft screw that crisp technology is made; Comprise not quenched martensite stainless steel anti-theft screw nail body (11), screw nail bar (21), screw nail bar screw thread (22), screw nail bar bottom surface (23), screw screw top (31), screw top bottom surface (32), screw top excircle tapered wall (33) or screw top epimere excircle tapered wall (34), screw top outer wall hypomere flange excircle tapered wall (35), screw top outer wall hypomere flange excircle tapered wall major diameter end face (36); (52), screw top end face indent hole wall (53), screw top end face indent hole wall screw thread (54) at the bottom of circle shrinkage pool wall (44) or screw top end face inward recess (51), the screw top end face inward recess in (43), the screw top end face off-centre at the bottom of the circle shrinkage pool in circle shrinkage pool (42), the screw top end face off-centre in the screw top end face (41), screw top end face off-centre; The peripheral end face dextrad of screw top endoporus precession concave type top is kept out (61), screw top end face dextrad precession concave type top and is kept out left retaining wall (62), screw top end face dextrad precession concave type top and keep out right slope shape end face (63) or the protruding Gao Shiding of the peripheral end face dextrad precession of screw top endoporus and keep out (71), the protruding Gao Shiding of screw top end face dextrad precession and keep out right retaining wall (72), the protruding Gao Shiding of screw top end face dextrad precession and keep out left slope shape end face (73) or the peripheral end face left-hand of screw top endoporus precession concave type top and keep out (81), screw top end face left-hand precession concave type top and keep out right retaining wall (82), screw top end face left-hand precession concave type top and keep out left slope shape end face (83) or the protruding Gao Shiding of the peripheral end face left-hand precession of screw top endoporus and keep out (91), the protruding Gao Shiding of screw top end face left-hand precession and keep out left retaining wall (92), the protruding Gao Shiding of screw top end face left-hand precession and keep out right slope shape end face (93) or peripheral recessed the keeping out of end face " V " font (101) of screw top endoporus or the peripheral end face of screw top endoporus " fall V " font is protruding and keep out (111) or the peripheral end face of screw top endoporus and " face upward first quarter moon " shape is recessed to keep out (121) or the peripheral end face of screw top endoporus " first quarter moon of bowing " shape is protruding and keep out (131); (311) be holding time; (312) be the vacuum hardening temperature; (216) the nail body weight of the 5th conventional period oil cooling to 0 ℃ ± 40 ℃ newly is warming up to 240 ℃ ± 100 ℃ insulation tempering 2.5 hours ± 1.5 hours for non-the present invention; (217) reach 40 ° of Rockwell hardnesss at least for the nail body steel hardness of non-the present invention after 5 conventional period vacuum quenching oil cold-peace tempering; (218) for non-the present invention through the crisp anti-theft screw after fastening of the nail body steel after the 5 conventional period vacuum quenching oil cold-peace tempering hammer into shape pound easily broken; The conventional vacuum hardening that divides 10 period different temperatures and different time to the nail body of quenched martensite stainless steel anti-theft screw not (11); Promptly the 1st conventional period is following closely body from 0 ℃ of temperature-rise period (211) that is warming up to 850 ℃ ± 100 ℃; The 2nd conventional period was incubated 2.5 hours ± 1.5 hours (212) to 850 ℃ ± 100 ℃ nail bodies; The 3rd conventional period the nail body from 850 ℃ ± 100 ℃ temperature-rise periods (213) that continue to be warming up to 1040 ℃ ± 100 ℃; The 4th conventional period was incubated 2.5 hours ± 1.5 hours (214) to 1040 ℃ ± 100 ℃ nail bodies; The 5th conventional period was carried out the 1st conventional oil cooling to 0 ℃ ± 40 ℃ (215) to 1040 ℃ ± 100 ℃ nail bodies, and the 6th conventional period carried out nail body behind the 1st conventional oil cooling to 0 ℃ ± 40 ℃ (215) to the 5th 1040 ℃ ± 100 ℃ nails body of conventional period and is warming up to 850 ℃ ± 100 ℃ temperature-rise period (411) more again, and the 7th conventional period was incubated 2.5 hours ± 1.5 hours (412) to 850 ℃ ± 100 ℃ nail bodies; The 8th conventional period continued to be warming up to 1040 ℃ ± 100 ℃ temperature-rise period (413) to 850 ℃ ± 100 ℃ nail bodies; The 9th conventional period was incubated 2.5 hours ± 1.5 hours (414) to 1040 ℃ ± 100 ℃ nail bodies, and the 10th conventional period was carried out the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ (415) to 1040 ℃ ± 100 ℃ nail bodies, and characteristic of the present invention is: the 10th conventional period is carried out freezing 2.5 hours ± 2 hours (416) of subzero 80 ℃ ± 70 ℃ nitrogen the 3rd time to the nail body that 1040 ℃ ± 100 ℃ nail bodies carry out behind the 2nd conventional oil cooling to 0 ℃ ± 40 ℃ (415); The steel hardness that increasing with quenching behind the 3rd subzero 80 ℃ ± 70 ℃ nitrogen freezing 2.5 hours ± 2 hours (416) do not increase the Martensitic Stain Less Steel anti-theft screw (417) that crisp technology makes firmly reaches 40 ° of Rockwell hardnesss (418) at least, increases with quenching to equate before the steel toughness that do not increase the Martensitic Stain Less Steel anti-theft screw (417) that crisp technology makes firmly and the quenching or close anti-theft screw after fastening is pounded can not rupture (419) suddenly with iron hammer.
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| CN2012101385093A CN102644647A (en) | 2012-04-23 | 2012-04-23 | Martensite stainless steel anti-theft screw manufactured by quenching hardness-increasing and brittle non-increasing process |
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| CN2012101385093A CN102644647A (en) | 2012-04-23 | 2012-04-23 | Martensite stainless steel anti-theft screw manufactured by quenching hardness-increasing and brittle non-increasing process |
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| CN104164542A (en) * | 2014-08-17 | 2014-11-26 | 成都亨通兆业精密机械有限公司 | Heat treatment method of automobile screw |
| CN104164541A (en) * | 2014-08-17 | 2014-11-26 | 成都亨通兆业精密机械有限公司 | Heat treatment method beneficial to core tenacity of auto screw |
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Application publication date: 20120822 |