JPH03219043A - Low carbon boron steel track shoe and its manufacture - Google Patents
Low carbon boron steel track shoe and its manufactureInfo
- Publication number
- JPH03219043A JPH03219043A JP1170590A JP1170590A JPH03219043A JP H03219043 A JPH03219043 A JP H03219043A JP 1170590 A JP1170590 A JP 1170590A JP 1170590 A JP1170590 A JP 1170590A JP H03219043 A JPH03219043 A JP H03219043A
- Authority
- JP
- Japan
- Prior art keywords
- track
- low
- boron steel
- track shoe
- shoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229910000712 Boron steel Inorganic materials 0.000 title claims description 20
- PPWPWBNSKBDSPK-UHFFFAOYSA-N [B].[C] Chemical compound [B].[C] PPWPWBNSKBDSPK-UHFFFAOYSA-N 0.000 title claims description 3
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002826 coolant Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000005496 tempering Methods 0.000 claims abstract description 5
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 18
- 238000010791 quenching Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 230000000171 quenching effect Effects 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 6
- PALQHNLJJQMCIQ-UHFFFAOYSA-N boron;manganese Chemical compound [Mn]#B PALQHNLJJQMCIQ-UHFFFAOYSA-N 0.000 claims description 5
- 230000000452 restraining effect Effects 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 abstract description 2
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 150000001721 carbon Chemical class 0.000 abstract 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 10
- 238000005336 cracking Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- YHEXKHYQCQBLJR-UHFFFAOYSA-N [B].[Mn].[C] Chemical compound [B].[Mn].[C] YHEXKHYQCQBLJR-UHFFFAOYSA-N 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
【発明の詳細な説明】
］産業上の利用分野１
本発明は、無限軌道車両等の腹帯に使用される履板とそ
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION] Industrial Application Field 1 The present invention relates to a track shoe used as a belly band for a tracked vehicle, etc., and a method for manufacturing the same.
［従来の技術］
無限軌道車両等に用いられる腹帯のうち、路面に接する
履板は、耐摩耗性が要求されるとともに、履板に加わる
負荷に耐えるための強度、衝撃特性、破壊靭性が要求さ
れる。[Prior Art] Among the belts used in tracked vehicles, the tracks that contact the road surface are required to have wear resistance, as well as strength, impact properties, and fracture toughness to withstand the load applied to the tracks. be done.
これらの要求品質を満足するため、従来、履板は次の（
イ）、（ロ）の方法等により製造される。In order to satisfy these quality requirements, conventionally, the shoes were manufactured using the following (
Manufactured by methods such as a) and (b).
（イ）中炭素系マンガン鋼を素材とし、加熱後、無拘束
状態で水または水溶性焼入れ液または油を用いて焼入れ
し、その後４００℃以上の高温で焼もどしを行う方法。(a) A method in which medium-carbon manganese steel is used as a material, and after heating, quenching is performed using water or a water-soluble quenching liquid or oil in an unrestrained state, and then tempering is performed at a high temperature of 400°C or higher.
（ロ）中炭素系マンガン・ボロン鋼を素材とし、無拘束
状態で水または水溶性焼入れ液ま７ｊは油を用いて焼入
れし、その後、１５０〜２５０℃の低温で焼もどしを行
う方法。(b) A method in which medium-carbon manganese-boron steel is used as a material, quenched in an unrestricted state using water or a water-soluble quenching liquid or oil, and then tempered at a low temperature of 150 to 250°C.
［発明が解決しようとする課題１
上記（イ）、（ロ）の製造方法、およびそれらの製造方
法によって得られた腰板には、下記の問題がある。[Problem to be Solved by the Invention 1] The manufacturing methods (a) and (b) above and the wainscoting obtained by these manufacturing methods have the following problems.
まず、製造面については、中炭素系マンガン鋼または中
炭素系マンガン・ボロン鋼を素材としているため、水焼
入れの場合には焼割れが発生し易い。また、無拘束焼入
れであるために、焼入れ変形の発生がさけられず、熱処
理後、矯正が必要である。First, regarding manufacturing, since the material is medium carbon manganese steel or medium carbon manganese boron steel, quench cracking is likely to occur when water quenching. In addition, since unrestricted quenching is used, quenching deformation cannot be avoided, and straightening is required after heat treatment.
定量的には、中炭素系マンガン鋼は、０．２８−０゜３
６％Ｃ，０，１５〜０．３５％Ｓ ｉ 、 １．２０〜
１．５０％Ｍｎ 。Quantitatively, medium carbon manganese steel is 0.28-0゜3
6%C, 0.15~0.35%S i , 1.20~
1.50%Mn.
Ｍ ａｘｅ、 ０４０％Ｐ、 Ｍａｘｏ、０４０％Ｓの
組成を有し、ぞの焼割れ発生率は約０．２％である。中
炭素系マンガン・ボロン鋼は０．２８〜０，３６％Ｃ１
０，１５〜０６３５％Ｓｉ 、０．８０〜１．１０％Ｍ
ｎ １Ｍａｘ０．０４０％Ｐ１Ｍａｘｏ、 ０４０％Ｓ
、５〜３０ｐｐｍＢの組成を有し、その焼割れ発生率は
約０．１％である。また、変形については、下ローラー
上を無拘束で送って低密度冷却液噴射で冷却覆るため、
上方にそりがえる変形を生じる（第５図参照）。It has a composition of Max. Medium carbon manganese/boron steel is 0.28-0.36%C1
0.15~0635%Si, 0.80~1.10%M
n 1Max0.040%P1Maxo, 040%S
, 5 to 30 ppmB, and its quench cracking incidence is about 0.1%. In addition, regarding deformation, the lower roller is sent unrestricted and cooled and covered with a low-density coolant jet.
This causes an upward warping deformation (see Figure 5).
また、製造された履板の品質については、中炭素系マン
ガン鋼の場合、製品硬さが１−ＩＲｃ３７〜４３レベル
での使用が多いため、耐摩耗性が低く、また強度も低い
ため、使用中に［曲がり」等の不具合がある。一方、中
炭素系マンガン・ボロン鋼は、製品硬さがｌ−Ｉ ＲＣ
４３〜５２レベルでの使用が多いため、耐摩耗性、強度
は優れているが、破壊靭性値（ＫＩＣ）が低いため、使
用中の折損事故が避けられない。Regarding the quality of the manufactured track shoes, medium carbon manganese steel is often used with product hardness at the 1-IRc level of 37 to 43, resulting in low wear resistance and low strength. There are defects such as bends inside. On the other hand, medium carbon manganese/boron steel has a product hardness of l-I RC
Since it is often used at a level of 43 to 52, it has excellent wear resistance and strength, but its fracture toughness value (KIC) is low, so breakage accidents during use are unavoidable.
本発明は、上記問題点を解決するために、すぐれた耐摩
耗性を有し、かつＪぐれた衝撃特性および破壊靭性を有
Ｊる履帯用履板およびその製造方法を提供することを目
的とＪる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to provide a track shoe that has excellent wear resistance, as well as excellent impact properties and fracture toughness, and a method for manufacturing the same. Jru.
［課題を解決するための手段］
上記目的は、本発明によれば、つぎの履帯用履板および
その製造方法によって達成される。[Means for Solving the Problems] According to the present invention, the above object is achieved by the following crawler shoes and method for manufacturing the same.
く１） 炭素量が０．１５〜０．３０％で不純物元素の
Ｓが０．０１５％以下の低炭素系マンガン・ボロン鋼か
ら成り、高液流密度の冷却液噴射を含む焼入れ、低温焼
もどしの熱処理が施されていることを特徴とする低炭素
ボロン鋼履板。1) Made of low-carbon manganese-boron steel with a carbon content of 0.15 to 0.30% and an impurity element S of 0.015% or less, it is quenched including cooling liquid injection with a high liquid flow density, and low-temperature quenching. Low-carbon boron steel footwear that is characterized by being subjected to a reversible heat treatment.
（２） 炭素口が０．１５〜０１３０％で不純物元素の
Ｓが０．０１５％以下の低炭素系マンガン・ボロン鋼を
履板素材とし、
該履板素材に加熱を施して均一なオーステナイｉ・組織
とし、
加熱直後に、前記腰板素材を冷却槽内の回転する上下ロ
ーラー間に通して前記履板木材に変形阻止の拘束力を与
えつつ、噴射パイプより高液流密度の冷却液を前記履板
素材に噴射することによって前記履板素材を焼入れし、
その後、１５０〜２５０℃で低湿焼もどしすることを特
徴とする低炭素ボロン鋼腰板の製造方法。(2) Low-carbon manganese-boron steel with a carbon content of 0.15 to 0.130% and an impurity element S of 0.015% or less is used as a shoe shoe material, and the shoe shoe material is heated to produce uniform austenite.・Immediately after heating, the wainscot material is passed between rotating upper and lower rollers in a cooling tank to apply a restraining force to prevent deformation of the track board wood, and a cooling liquid with a high liquid flow density is applied to the above from the injection pipe. A method for producing a low carbon boron steel wainscot board, characterized in that the track board material is quenched by spraying it onto the track board material, and then low humidity tempered at 150 to 250°C.
［作 用］
低炭素系マンガン・ボロン鋼を腹板素材として用いるこ
とにより、焼割れがなくなり、破壊靭性が良好になり、
かつ耐摩耗性、強度面でも最高の熱処理品質が付与され
る。[Function] By using low carbon manganese/boron steel as the material for the belly plate, quench cracking is eliminated and fracture toughness is improved.
It also has the highest heat treatment quality in terms of wear resistance and strength.
また、製造方法において、焼入れ工程で上下ロラー闇を
通して拘束しつつ冷却するので、熱処理時の変形が抑え
られる。さらに、高液流密度の冷却液を用いて焼入れす
るので、冷却速度の増大を通して、表面硬さ、耐摩耗性
、強度が向上する。In addition, in the manufacturing method, deformation during heat treatment is suppressed because cooling is performed while being restrained through the upper and lower rollers in the quenching process. Furthermore, since the quenching process is performed using a cooling liquid with a high liquid flow density, the surface hardness, wear resistance, and strength are improved through an increase in the cooling rate.
耐摩耗性、硬さ、強度と、衝撃特性、破壊靭性とは、相
反する特性のため、従来は両立させることが困難であっ
たが、本発明により、第４図に示す如く、両立させるこ
とが可能となった。Conventionally, it was difficult to achieve both wear resistance, hardness, strength, impact properties, and fracture toughness because they are contradictory properties, but with the present invention, it has been possible to achieve both, as shown in Figure 4. became possible.
［実施例］ 以下、本発明の詳細な説明する。[Example] The present invention will be explained in detail below.
第１図は無限軌道帯１とその構成部品を示し、履板２、
履板連結用ポルｌ−３およびナラｌ−４、リング５．６
、ブッシング７、ダスＩ〜シール８、およびピン９から
一単位が構成される。Figure 1 shows the track belt 1 and its component parts, including tracks 2,
Pole l-3 and nara l-4 for connecting shoes, ring 5.6
, bushing 7, das I to seal 8, and pin 9 constitute one unit.
履板２に要求される特性は、耐摩耗性（表面硬さ大）、
強度、および良好な衝撃特性、破壊靭性である。The characteristics required for the track shoes 2 are wear resistance (high surface hardness),
strength, and good impact properties, fracture toughness.
本発明では、履板２の素材材料に、従来の中炭素系マン
ガン鋼あるいは中炭素系マンガン・ボロン鋼に代えて、
低炭素系マンガン・ボロン鋼が用いられる。この低炭素
系マンガン・ボロン鋼の組成は表１通りである。In the present invention, the material of the track plates 2 is replaced with conventional medium carbon manganese steel or medium carbon manganese boron steel.
Low carbon manganese/boron steel is used. The composition of this low carbon manganese boron steel is shown in Table 1.
表１ 本発明品の塑性（ｗｔ％） 続いて、履板２は焼入れ、焼もどしされる。Table 1 Plasticity of the product of the present invention (wt%) Subsequently, the track board 2 is hardened and tempered.
まず、焼入れについては、履板２を約８７０℃に加熱し
て均一なオーステノーイト組織とづる。加熱直後に、急
冷するが、これは第２図に示すように、冷却槽内の、回
転する上下ローラー１０．１１間に履板２を挿入して冷
却槽内を移動させ、履板拘東用拘束力を付与された上ロ
ーラ−１０で履板２を拘束しつつ、上ローラ−１０の間
および下ローラ−１１の間に配置されＩζ噴劃側イプ１
２．１３より、高液流密度の冷却液を噴射Ｊることによ
って行う。上ロラー１０による履板拘束力は３〜ＩＯＴ
ＯＮである。First, for hardening, the track board 2 is heated to about 870° C. to form a uniform austenoid structure. Immediately after heating, it is rapidly cooled, as shown in Figure 2, by inserting the track 2 between the rotating upper and lower rollers 10 and 11 in the cooling tank and moving it in the cooling tank. While restraining the track board 2 with the upper roller 10 which is given a restraining force, the I
2.13, this is done by injecting a cooling liquid with a high liquid flow density. The shoe binding force by the upper roller 10 is 3 to IOT
It is ON.
また、上側噴射パイプ１２からの冷却液の液流密度は、
０．５〜３ Ｆ７１３／Ｉｒｔ−ｍｉｎであり、下側噴
射バイブ１３からの冷却液の液流密度は３〜３０ＴｒＬ
”／’ｒｄ・ｍ団であり、回れも高液流密度とされてい
る。In addition, the liquid flow density of the cooling liquid from the upper injection pipe 12 is
0.5 to 3 F713/Irt-min, and the liquid flow density of the coolant from the lower injection vibe 13 is 3 to 30 TrL.
"/'rd・m group, and the rotation is also said to have a high liquid flow density.
冷却液は水とは限らず、水溶性焼入れ液、油等であって
もよい。The cooling liquid is not limited to water, and may be a water-soluble quenching liquid, oil, or the like.
かくして、本発明の履板２が得られる。In this way, the track board 2 of the present invention is obtained.
つぎに、作用について説明する。Next, the effect will be explained.
まず、低炭素系マンガン・ボロン鋼を履板２のｌａ＋Ａ
として用いたことにより、熱処理における焼われがなく
なる。また、低炭素とボロンにより良好な衝撃特性、破
壊靭性が１りることが容易になる。First, low carbon manganese/boron steel is la+A for track board 2.
By using it as a heat treatment, there is no burning during heat treatment. In addition, low carbon and boron make it easy to achieve good impact properties and fracture toughness.
不純物Ｓし少なくしであるので、上記の特性が安定して
得られる。Since the amount of impurity S is reduced, the above characteristics can be stably obtained.
また、腹板２を回転づる上下ローラー１０．１１間で拘
束しつつ冷却するので、熱処理時の変形が最小に抑えら
れる。また、焼入れは高液流密度の冷却液で急速冷却す
るので、最高の熱処理品質が付与され、高硬度、高強度
が得られる。さらに高液流密度の冷却液による冷却にお
いて、下側噴射パーｒプ１３からの液層を上側噴射バイ
ブ１２からの液量よりら多くしであるので、履板２の上
側へのそりかえり変形は抑制される。上記の上下ローラ
ー１０．１１による拘束および下側噴射パイプ１３から
の冷却液の多量噴射によって、履板２の変形は、第３図
の爪方向の曲りが±０．３＃以内、Ｂ方向の曲りが（−
１，０１７１／／１以内と低いレベルに抑えられる。Further, since the belly plate 2 is cooled while being restrained between the rotating upper and lower rollers 10 and 11, deformation during heat treatment can be suppressed to a minimum. In addition, since the quenching process involves rapid cooling using a cooling liquid with a high liquid flow density, the highest heat treatment quality is imparted, resulting in high hardness and high strength. Furthermore, in cooling with a cooling liquid with a high liquid flow density, the amount of liquid from the lower injection part 13 is larger than the amount of liquid from the upper injection vibrator 12, so that the track 2 is warped upward and deformed. is suppressed. Due to the above-mentioned restraint by the upper and lower rollers 10.11 and the injection of a large amount of cooling fluid from the lower injection pipe 13, the deformation of the track board 2 is limited to within ±0.3# in the claw direction in FIG. 3, and in the B direction. The bend is (-
It can be kept to a low level of 1,0171//1 or less.
このようにして得られた履板２の特性を従来の材質およ
び熱処理による履板の特性と比べると、次の表に示した
ようになる。The characteristics of the track shoes 2 thus obtained are compared with those of conventional track boards made of materials and heat treated, as shown in the following table.
（以下余白）
表２ 従来品と本発明品との特性比較
上表かられかるように、本発明の履板２の製品硬さはＩ
−ＩＲＣ４２−４９と高硬度であるため、良好な耐摩耗
性が得られる。また、トＩ ＲＣ４２〜４９と高硬度で
あるにもかかわらず、衝撃特性および破壊靭性特性が格
段に優れているため、使用中の折損事故は防止される。(Space below) Table 2 Comparison of characteristics between the conventional product and the product of the present invention As seen from the table above, the product hardness of the track board 2 of the present invention is I
- Good wear resistance can be obtained due to the high hardness of IRC42-49. In addition, although it has a high hardness of IRC42 to 49, it has extremely excellent impact properties and fracture toughness, so breakage accidents during use are prevented.
［発明の効果１
（イ）、低炭素系マンガン・ボロン鋼の使用により、焼
割れが皆無となり、磁気探傷工程を省略できる。[Effect of the invention 1 (a) By using low-carbon manganese-boron steel, there will be no quench cracking, and the magnetic flaw detection process can be omitted.
（ロ）、低炭素系マンガン・ボロン鋼の使用により、良
好な衝撃特性および破壊靭性特性が得られる。(b) Good impact properties and fracture toughness properties can be obtained by using low carbon manganese/boron steel.
（ハ）、高液流密度の冷却液の噴射によって冷却速度を
速めることができ、低炭素系鋼の使用にもかかわらず、
硬さ、強度を出すことができる。したがって、従来、両
立が困難と考えられていた耐摩耗性、硬さ、強度と、衝
撃特性、破壊靭性とが両立する。(c) The cooling rate can be increased by injection of coolant with high liquid flow density, and despite the use of low carbon steel,
It can provide hardness and strength. Therefore, wear resistance, hardness, strength, impact properties, and fracture toughness, which were conventionally considered difficult to achieve, are compatible.
（ニ）、上下ローラー闇で履板を拘束しながら焼入れを
行うので、焼入れ時の変形を最小に抑制でき、変形矯正
工程を省略できる。(d) Since hardening is performed while restraining the track discs in the dark between the upper and lower rollers, deformation during hardening can be suppressed to a minimum and the deformation correction process can be omitted.
（ホ）、上下からの高液流密度の冷却液の噴射量を、上
下で只ならせることによっても、焼入れ時の変形を制御
でき、変形を最小に抑制することができる。(e) Deformation during quenching can be controlled and minimized by making the amount of high liquid flow density coolant jetted from above and below the same.
第１図は無限軌道帯とその構成部品の斜視図、第２図は
本発明方法で履板を焼入れしているときの装置の側面図
、
第３図は履板の曲がりを測定した方向を示Ｊ−履板の平
面図、
第４図は硬さ、強度と衝撃値、破壊靭性との関係を示す
概念図、
第５図は従来方法で履板を焼入れしているときの装置の
側面図、
である。
２・・・・・・履板
１０・・・・・・上ローラ−
１１・・・・・・下ローラ−
１２・・・・・・土側噴射パイプ
１３・・・・・・下側噴射パイプFig. 1 is a perspective view of the track belt and its component parts, Fig. 2 is a side view of the equipment used to harden the tracks according to the method of the present invention, and Fig. 3 shows the direction in which the bending of the tracks was measured. Figure 4 is a conceptual diagram showing the relationship between hardness, strength, impact value, and fracture toughness. Figure 5 is a side view of the equipment used to harden the track using the conventional method. Figure, is. 2...Track plate 10...Upper roller 11...Lower roller 12...Soil side injection pipe 13...Lower side injection pipe
Claims (1)
０．０１５％以下の低炭素系マンガン・ボロン鋼から成
り、高液流密度の冷却液噴射を含む焼入れ、低温焼もど
しの熱処理が施されていることを特徴とする低炭素ボロ
ン鋼履板。 ２、炭素量が０．１５〜０．３０％で不純物元素のＳが
０．０１５％以下の低炭素系マンガン・ボロン鋼を履板
素材とし、 該履板素材に加熱を施して均一なオーステナイト組織と
し、 加熱直後に、前記履板素材を冷却槽内の回転する上下ロ
ーラー間に通して前記履板素材に変形阻止の拘束力を与
えつつ、噴射パイプより高液流密度の冷却液を前記履板
素材に噴射することによって前記履板素材を焼入れし、 その後、１５０〜２５０℃で低温焼もどしすることを特
徴とする低炭素ボロン鋼履板の製造方法。[Claims] 1. Made of low-carbon manganese-boron steel with a carbon content of 0.15 to 0.30% and an impurity element S of 0.015% or less, it is capable of jetting a coolant with a high liquid flow density. Low-carbon boron steel footwear characterized by being subjected to heat treatment including quenching and low-temperature tempering. 2. Low-carbon manganese/boron steel with a carbon content of 0.15 to 0.30% and an impurity element S of 0.015% or less is used as a shoe shoe material, and the shoe shoe material is heated to form uniform austenite. Immediately after heating, the track material is passed between rotating upper and lower rollers in a cooling tank to apply a restraining force to prevent deformation of the track material, while a cooling liquid with a high liquid flow density is applied to the track material from an injection pipe. A method for manufacturing low carbon boron steel tracks, characterized in that the track board material is quenched by spraying onto the track material, and then low-temperature tempering is performed at 150 to 250°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011705A JP2823052B2 (en) | 1990-01-23 | 1990-01-23 | Low carbon manganese-boron steel footwear and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011705A JP2823052B2 (en) | 1990-01-23 | 1990-01-23 | Low carbon manganese-boron steel footwear and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03219043A true JPH03219043A (en) | 1991-09-26 |
| JP2823052B2 JP2823052B2 (en) | 1998-11-11 |
Family
ID=11785460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011705A Expired - Lifetime JP2823052B2 (en) | 1990-01-23 | 1990-01-23 | Low carbon manganese-boron steel footwear and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2823052B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100963787B1 (en) * | 2008-03-28 | 2010-06-14 | 현대제철 주식회사 | Apparatus for manufacturing of track shoe |
| US8008133B2 (en) | 2008-02-11 | 2011-08-30 | Globalfoundries Inc. | Chip package with channel stiffener frame |
| US8216887B2 (en) | 2009-05-04 | 2012-07-10 | Advanced Micro Devices, Inc. | Semiconductor chip package with stiffener frame and configured lid |
| US8232138B2 (en) | 2010-04-14 | 2012-07-31 | Advanced Micro Devices, Inc. | Circuit board with notched stiffener frame |
| US8313984B2 (en) | 2008-03-19 | 2012-11-20 | Ati Technologies Ulc | Die substrate with reinforcement structure |
| ITMI20120755A1 (en) * | 2012-05-04 | 2013-11-05 | Cicsa S R L | METHOD OF THERMAL TREATMENT FOR STEEL ELEMENTS |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463320A (en) * | 2015-12-06 | 2016-04-06 | 辽宁宏昌重工股份有限公司 | High-strength wear-resistant steel for track shoe and preparing method for high-strength wear-resistant steel |
| KR102594098B1 (en) * | 2021-04-15 | 2023-10-25 | 일신테크 주식회사 | Forklift shoe cooling method by cooling device |
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| JPS5717051A (en) * | 1980-07-05 | 1982-01-28 | Ricoh Co Ltd | Dma address generating method |
| JPS58120719A (en) * | 1982-01-08 | 1983-07-18 | Kobe Steel Ltd | Manufacture of case hardening b steel |
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| JPS61186419A (en) * | 1985-02-13 | 1986-08-20 | Toyota Motor Corp | Production of drive shaft |
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|---|---|---|---|---|
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| JPS5417682A (en) * | 1977-07-08 | 1979-02-09 | Mitsubishi Electric Corp | Semiconductor and its manufacture |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8008133B2 (en) | 2008-02-11 | 2011-08-30 | Globalfoundries Inc. | Chip package with channel stiffener frame |
| US8313984B2 (en) | 2008-03-19 | 2012-11-20 | Ati Technologies Ulc | Die substrate with reinforcement structure |
| US8927344B2 (en) | 2008-03-19 | 2015-01-06 | Ati Technologies Ulc | Die substrate with reinforcement structure |
| KR100963787B1 (en) * | 2008-03-28 | 2010-06-14 | 현대제철 주식회사 | Apparatus for manufacturing of track shoe |
| US8216887B2 (en) | 2009-05-04 | 2012-07-10 | Advanced Micro Devices, Inc. | Semiconductor chip package with stiffener frame and configured lid |
| US8232138B2 (en) | 2010-04-14 | 2012-07-31 | Advanced Micro Devices, Inc. | Circuit board with notched stiffener frame |
| ITMI20120755A1 (en) * | 2012-05-04 | 2013-11-05 | Cicsa S R L | METHOD OF THERMAL TREATMENT FOR STEEL ELEMENTS |
| EP2660340A1 (en) * | 2012-05-04 | 2013-11-06 | Cicsa S.r.l. | Method of thermal treatment for steel elements |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2823052B2 (en) | 1998-11-11 |
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