JPS62246614A - Steel pipe conveying roll excellent in wear-resistance - Google Patents
Steel pipe conveying roll excellent in wear-resistanceInfo
- Publication number
- JPS62246614A JPS62246614A JP8743386A JP8743386A JPS62246614A JP S62246614 A JPS62246614 A JP S62246614A JP 8743386 A JP8743386 A JP 8743386A JP 8743386 A JP8743386 A JP 8743386A JP S62246614 A JPS62246614 A JP S62246614A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- steel pipe
- polyamide resin
- wear
- resistance
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 19
- 229920000800 acrylic rubber Polymers 0.000 claims abstract description 12
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract 3
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical group C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 claims description 7
- 239000011342 resin composition Substances 0.000 claims description 5
- 239000000805 composite resin Substances 0.000 abstract 2
- JURLNXPXCMWCHE-UHFFFAOYSA-N 3-ethylidenebicyclo[2.2.1]heptane Chemical group C1CC2C(=CC)CC1C2 JURLNXPXCMWCHE-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000004677 Nylon Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- -1 peroxide compound Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は耐摩耗性の優れた鋼管搬送用ロールであって、
特殊変性ポリアミドを用いた鋼管搬送用ロールに関する
。[Detailed description of the invention] (Industrial application field) The present invention is a steel pipe conveying roll with excellent wear resistance,
This article relates to a roll for conveying steel pipes using specially modified polyamide.
（従来技術）
近年の油田は地下１０．０００メートルに達する深井戸
とか海底、マイナス６０℃の極寒地へと広がり、また硫
化水素や炭酸ガスなど高腐食性の石油、ガス採掘などそ
の条件は過酷化するいっぽうである。この様な厳しい環
境に対応するために強度、耐食性、低温靭性などに優れ
た、権威あるアメリカ石油協会規格をもこえた高級油井
管等の鋼管が要求されている。この様な高度な要求に対
応して、曲げや圧潰に対して高い抵抗性を有する深井戸
用高強度油井管、耐硫化物応力腐食割れに硫化水素雰囲
気用油井管等が開発されている。これら高級油井管の製
造は全工程がコンピュータ制御されており各工程間を鋼
管搬送用ロールを備えたラインで搬送されている。(Prior technology) In recent years, oil fields have expanded to deep wells reaching 10,000 meters underground, on the seabed, and in extremely cold regions of -60 degrees Celsius, and the conditions are harsh, such as drilling for highly corrosive oil and gas such as hydrogen sulfide and carbon dioxide. On the other hand, it becomes In order to cope with such harsh environments, there is a demand for high-grade oil country tubular goods and other steel pipes that have excellent strength, corrosion resistance, and low-temperature toughness, and that exceed the authoritative American Petroleum Institute standards. In response to such advanced demands, high-strength oil country tubular goods for deep wells with high resistance to bending and crushing, oil country country tubular goods for use in hydrogen sulfide atmospheres that are resistant to sulfide stress corrosion cracking, and the like have been developed. The entire manufacturing process of these high-grade oil country tubular goods is computer-controlled, and the pipes are transported between each process on a line equipped with rolls for transporting steel pipes.
特に、サイジング工程以後のクーリングベット、矯正、
管厚、外径検査（非破壊検査）、管端切断、検査工程間
の搬送では、高級油井管の表面にひっかき傷等の損傷を
つけると製品に致命的欠陥を与え品質上の問題を生じる
と同時に、歩留りや生産性に影響をおよぼす。In particular, cooling bed, straightening after sizing process,
During pipe thickness and outer diameter inspection (non-destructive testing), pipe end cutting, and transportation between inspection processes, scratches or other damage to the surface of high-grade oil country tubing can cause fatal product defects and quality problems. At the same time, it affects yield and productivity.
これらの問題点を克服するために鋼管搬送ロールとして
初期のセラミック製ロールから注型ナイロン製ロールが
使用されるようになった。即ち、注型す身ロン製ロール
を使用することにより鋼管表面に傷をつけることなく好
適に使用されるようになった。In order to overcome these problems, cast nylon rolls have been used as steel pipe transport rolls, replacing the earlier ceramic rolls. That is, by using a roll made of cast iron, it has become possible to use it suitably without damaging the surface of the steel pipe.
しかし、注型ナイロン製ロールは、硬度日ソクラエール
Ｒ１２２、引張弾性率３．７５Ｘ１０′ｆｋｇ ／ Ｃ
ＪＪと剛性が高いか、耐摩耗寿命が１ケ月と短かく、補
修頻度が高くコスト高をもたらせた。この点の改良をす
べく種々検討の結果、ショアー硬度Ｄ６５、引張弾性率
５Ｘ１０’ｋｇ／−と剛性が低く、衝撃吸収性の良い超
高分子量ポリエチレン（略称ＵＨＭＷ−ＰＥ ＩＩｏ
ｓｔａｌｅｎＧＬＩＲ４１２：ヘキスト社製）の鋼管搬
送ロールがテストされ、耐摩耗性を大巾に向上し、耐摩
耗寿命が３ケ月となり補修コストが大巾に低下した。However, the cast nylon roll has a hardness of R122 and a tensile modulus of 3.75X10'fkg/C.
Perhaps because it has higher rigidity than JJ, it has a short wear life of one month, requiring frequent repairs and resulting in high costs. As a result of various studies to improve this point, we have developed ultra-high molecular weight polyethylene (abbreviated as UHMW-PE IIo), which has a Shore hardness of D65, a tensile modulus of 5 x 10'kg/-, and has low rigidity and good impact absorption properties.
stalenGLIR412 (manufactured by Hoechst) was tested, and the abrasion resistance was significantly improved, the wear resistance life was 3 months, and the repair cost was significantly reduced.
現在Ｕ）（ＭＷ−ＰＲロールが好んで使用されて、鋼管
表面に損傷を与える問題も解消されたが、耐圧縮強度が
２５０ｋｇ／ｃｊと小さく使用中の荷重により流動を生
じ、ロールが両端でセ・ノドを起こすことと、表面硬度
が低いために搬送されてくる鋼管端面のカットエツジに
よってロール表面が頻繁に引きかき傷を負う欠点を有し
ている。Currently, U) (MW-PR rolls are preferred and the problem of damaging the steel pipe surface has been solved, but the compressive strength is as low as 250 kg/cj, and the load during use causes flow, and the rolls roll at both ends. The disadvantages are that the roll surface is frequently scratched by the cut edge of the end face of the steel pipe being conveyed due to the low surface hardness.
この様にロール表面に生じた傷の開口部にオイル等異物
が侵入し、ひいては製品鋼管表面に損傷を与えたり、汚
損する可能性を有していた。There is a possibility that foreign substances such as oil may enter the openings of the scratches formed on the roll surface, thereby damaging or staining the surface of the product steel pipe.
（発明が解決しようとする問題点）
本発明はこのような高価な高級油井管の表面に傷をつけ
ることなく搬送することの出来るロールや鋼管検査ライ
ンにおいて使用するロールを供給し、その使用時間を長
くして補修費を節減することにある。(Problems to be Solved by the Invention) The present invention provides rolls that can transport such expensive high-grade oil country tubular goods without damaging their surfaces, and rolls used in steel pipe inspection lines, and reduce the amount of time they can be used. The purpose is to extend the length and reduce repair costs.
（問題点を解決するための手段）
本発明の特徴とするところは、ポリアミド樹脂５０〜９
５重量％と主鎖にエチリデンノルボルネン構造を有する
アクリルゴム５０〜５重量％をブレンドしてなるポリア
ミド樹脂組成物を鋼管搬送用ロールの素材に用いた耐摩
耗性の優れた鋼管搬送用ロールにあり、現在広く使用さ
れている注型ナイロンロールや改良品のＵＨＭＷ−ＰＥ
製ロールの欠点を改善して、更に、耐摩耗性、耐クリー
プ性そして耐表面損傷性を備えたロールにある。(Means for solving the problems) The feature of the present invention is that polyamide resin 50-9
5% by weight of acrylic rubber having an ethylidene norbornene structure in the main chain, and a polyamide resin composition blended with 50% to 5% by weight of acrylic rubber having an ethylidene norbornene structure in the main chain. , currently widely used cast nylon rolls and improved UHMW-PE
The present invention is a roll that improves the drawbacks of manufactured rolls and further has wear resistance, creep resistance, and surface damage resistance.
上記の観点より、注型ナイロンに準する硬度と剛性を有
し、更に、ＵＨＭＷ−ＰＥの欠点である耐圧縮性を備え
たロールを開発すべく種々の検討を行った所、本発明者
等が先に提案（特開昭６１−２７５１号公報、特開昭６
０−２５８２５８号公報）しているポリアミド樹脂に主
鎖にエチリデンノルボルネン構造を有するアクリルゴム
をブレンドしてなるポリアミド樹脂組成物が極めて優れ
ていることを見出した。From the above viewpoint, the present inventors conducted various studies to develop a roll that has hardness and rigidity comparable to cast nylon, and also has compression resistance, which is a drawback of UHMW-PE. was first proposed (Japanese Patent Application Laid-Open No. 61-2751,
It has been found that a polyamide resin composition obtained by blending an acrylic rubber having an ethylidene norbornene structure in the main chain with a polyamide resin disclosed in Japanese Patent Publication No. 0-258258 is extremely superior.
上記ポリアミド樹脂組成物は、耐圧縮性でＵＨＭＷ−Ｐ
Ｒの欠点をカバーし、パーオキサイド架橋変性によって
コールドフローも起こさないのであり、ポリアミド樹脂
としては主としてε−カプロラクタムのアニオン重合で
得られるナイロン−６であり、その製造方法については
例えば特公昭５０−９０２６号公報、また特公昭５１−
１２７７号公報に開示されている。しかし、本発明では
これらの方法によって得られるポリアミド樹脂に限定さ
れるものではなく、他の方法によって得られるものでも
よい。かかるポリアート樹脂は通常ペレット化されたも
ので、他のポリマーとブレンドしやすいようになってい
る。The above polyamide resin composition has compression resistance and UHMW-P
It overcomes the drawbacks of R and does not cause cold flow due to peroxide crosslinking modification.The polyamide resin is mainly nylon-6 obtained by anionic polymerization of ε-caprolactam, and its manufacturing method is described in, for example, Japanese Patent Publication No. 1973- Publication No. 9026, and Special Publication No. 1983-
It is disclosed in Japanese Patent No. 1277. However, the present invention is not limited to polyamide resins obtained by these methods, and may be obtained by other methods. Such polyate resins are usually pelletized to facilitate blending with other polymers.
また、エチリデンルンボルネンを主鎖に有するアクリル
ゴムとしては、エチルアクリレート、ブチルアクリレー
ト等のアルキルアクリレート等を主成分とし、これに架
橋可能にするための成分としてエチリデンノルボルネン
とで構成され、また必要に応じ重合調節剤として２−メ
ルカプトベンゾチアゾールを添加したものであり、例え
ば日本合成ゴム■製のアクリルゴムＪＳＲＡＲＩＯＩ、
ＡＲ２０１及びその粉末ゴムとして＾ＲＯ２７、ＡＲＯ
２６等が知られている。In addition, acrylic rubber having ethylidene norbornene in its main chain is composed of an alkyl acrylate such as ethyl acrylate or butyl acrylate as a main component, and ethylidene norbornene as a component to enable crosslinking. 2-mercaptobenzothiazole is added as a polymerization regulator according to the specifications, such as acrylic rubber JSRARIOI manufactured by Japan Synthetic Rubber ■,
AR201 and its powder rubber ^RO27, ARO
26 mag is known.
ここで用いる上記アクリルゴムは粉末状のものがポリア
ミド樹脂とブレンドする上で好ましく、その添加量は５
〜５０重量％であり５重量％以下になるとゴム分が少な
いのでゴムによる衝撃吸収力が小さく耐衝撃性の向上は
期待されない。また、５０重量％になるとブレンド組成
物が軟らかくなりエンジニアリングプラスチックとして
の剛性が低下する。The acrylic rubber used here is preferably in powder form for blending with the polyamide resin, and the amount added is 5
-50% by weight, and if it is less than 5% by weight, the rubber content is so small that the impact absorption capacity of the rubber is small and no improvement in impact resistance is expected. Further, when the amount is 50% by weight, the blend composition becomes soft and the rigidity as an engineering plastic decreases.
更に、本発明において使用するパーオキサイド化合物は
１分の半減期を得るための分解温度がｌ００℃以上の化
合物で、例えばジクミルパーオキサイド、２．５−ジメ
チル−２，５ジ（ターシャリブチルパーオキシ）ヘキサ
ン、ベンゾイル−パーオキサイド、α、α−ビス（ター
シャリブチルパーオキシイソプロビル）ベンゼン、ター
シャリ−ブチル−パーオキサイド等であり、安定性の面
から炭酸カルシウムで希釈したものを用いたものが望ま
しい。Further, the peroxide compound used in the present invention is a compound having a decomposition temperature of 100°C or higher to obtain a half-life of 1 minute, such as dicumyl peroxide, 2,5-dimethyl-2,5 di(tert-butyl), etc. (peroxy)hexane, benzoyl peroxide, α,α-bis(tert-butylperoxyisopropyl)benzene, tert-butyl peroxide, etc., and from the viewpoint of stability, those diluted with calcium carbonate were used. Something is desirable.
上記組成を有するポリアミド樹脂組成物が特に鋼管搬送
用ロールに適用されるためには、まずアイドツト衝撃強
さ７ 、 ０〜１５ 、 ０ ｋｇ−ａｍ／ｃｓｍ。In order for the polyamide resin composition having the above composition to be particularly applied to rolls for conveying steel pipes, it must first have an eye impact strength of 7.0 to 15.0 kg-am/csm.
動摩擦係数０．１〜０．６の範囲で耐圧縮疲労性が１６
０万回以上の特性が必要となる。Compressive fatigue resistance is 16 in the range of dynamic friction coefficient 0.1 to 0.6.
Characteristics that can be used over 00,000 times are required.
ここで、耐圧縮疲労性とは■島津製作所製電機油圧す−
ボ式材料試験機にて試料サイズ１０×ｌＱ Ｘ ２５
ｍｍで６０℃の温度にて３０Ｈｚのサイクルで２０ｋｇ
／−と１ ’２０ ｋｇ／ａｊ（７）荷重範囲で４％永
久歪を生ずるに至る圧縮回数を示す。比較のためにＵＨ
ＭＷ−ＰＲでは、同一条件にて５，９１０回で寿命に達
する。Here, what is compression fatigue resistance?
Sample size 10 x 1Q x 25 using a material testing machine
20 kg at a cycle of 30 Hz at a temperature of 60°C in mm
/- and 1 '20 kg/aj (7) Indicates the number of times of compression to produce 4% permanent strain in the load range. For comparison, UH
MW-PR reaches the end of its life after 5,910 cycles under the same conditions.
この点からのＵＨＭＷ−ＰＥのクリープ特性が劣ってい
ることを示す。This shows that the creep properties of UHMW-PE are inferior in this respect.
以下に具体的実施例で示す。Specific examples will be shown below.
（実施例１）
特公昭５０−９０２６号公報により開示されているε−
カプロラクタムのアニオン重合によって得られたポリア
ミド樹脂のペレット、粉末状のアクリルゴム、パーオキ
サイド化合物、イタコン酸を下記に示す配合によってヘ
ンシェルミキサーで室温にて３〜５分間よく攪拌してブ
レンド物を作り、これを２軸押用機（池貝鉄工社製 Ｐ
ＣＭ−４５）によって押出しペレットを製造した。(Example 1) ε- disclosed in Japanese Patent Publication No. 50-9026
Pellets of polyamide resin obtained by anionic polymerization of caprolactam, powdered acrylic rubber, peroxide compound, and itaconic acid are mixed well in a Henschel mixer at room temperature for 3 to 5 minutes according to the formulation shown below to make a blend. This is a twin-screw pushing machine (manufactured by Ikegai Tekko Co., Ltd.
Extruded pellets were produced by CM-45).
配合
ポリアミド樹脂 ９０ｋｇＡＲ−０２７１
１１０ｋｇ
パーへキサ２５Ｂ−４０＊ ２ １ ｋｇイタコン酸
１ ｋｇ＊１１日本合成ゴム社製
アクリルゴム
＊２０日本油脂社製パーオキサイド化合者上記押出機の
夫々のゾーンにおける温度は（Ｎ。Compounded polyamide resin 90kgAR-0271
110 kg Perhexa 25B-40* 2 1 kg Itaconic acid 1 kg * 11 Acrylic rubber manufactured by Japan Synthetic Rubber Co., Ltd. * 20 Peroxide compound manufactured by Nihon Yushi Co., Ltd. The temperature in each zone of the extruder is (N.
、 １） １００℃、 （Ｎｏ、 ２） １７
０℃、 （Ｎ。, 1) 100℃, (No, 2) 17
0℃, (N.
、３）２１０℃、 （Ｎｏ、 ４）２１０℃、 （Ｎ
。, 3) 210℃, (No, 4) 210℃, (N
.
、５）２３０℃、 （Ｎｏ、６）２３０℃、 （ＮＯ，
７）２３０℃であり、アダプターおよびダイの温度はい
ずれも２３０℃であった。, 5) 230℃, (No, 6) 230℃, (NO,
7) 230°C, and the adapter and die temperatures were both 230°C.
このようにして得られたペレットを池貝鉄工社製ＦＳ−
５０−２５押出機にて下記条件にて２１２φ九棒に押出
成形を行った。The pellets thus obtained were used as FS-
Extrusion molding was performed using a 50-25 extruder under the following conditions into nine bars of 212φ.
押出条件
シリンダ一温度”ｃ ＣＩＣ２Ｃ３Ｃ４アダプタ一温
度’ＣＡｐ
グイ温度”ＣＤ ＩＤ ２ Ｄ ３
上記成形丸棒から２００φ球状の幅１００ｆｉロールを
切削加工して、下記走行条件で使用した。Extrusion conditions Cylinder temperature "c" CIC2C3C4 adapter temperature "CAp Gui temperature" CD ID 2 D 3 A 200φ spherical roll with a width of 100fi was cut from the above-mentioned round bar and used under the following running conditions.
その結果は、第１表及び第１図に示される。The results are shown in Table 1 and FIG.
所定の外径と内径をもつ鋼管は同一方向に回転する複数
の搬送ロールによって支持され、このロー９＝
−ルは鋼管の長手方法に対してスキュール角０〜２５°
の傾きを有している。また、鋼管の上側には押えロール
が設けられている。A steel pipe with a predetermined outer diameter and inner diameter is supported by a plurality of conveyor rolls rotating in the same direction, and these rolls have a skew angle of 0 to 25° with respect to the longitudinal direction of the steel pipe.
It has a slope of Further, a presser roll is provided on the upper side of the steel pipe.
従って、鋼管は搬送ロールの回転に伴って回転し、同時
にスキュール角によって搬送する。Therefore, the steel pipe rotates with the rotation of the transport rolls and is simultaneously transported by the skewer angle.
この場合、上記搬送ロールの回転速度は３５０ＲＰＭで
あり、また鋼管の移動速度は８０Ｍ／ｗｉｎであった。In this case, the rotation speed of the transport roll was 350 RPM, and the moving speed of the steel pipe was 80 M/win.
このような鋼管の走行条件下において、上記搬送ロール
の使用寿命は鋼管の間に左右に±１ｗｍ、上下に±２ｆ
ｉのクリアランスが生じた時点で限界（月）とした。Under such steel pipe running conditions, the service life of the above conveyor roll is ±1wm horizontally and ±2f vertically between the steel pipes.
The limit (month) was set at the time when the clearance of i occurred.
このように本発明のロールは比較例２のＵＨＭＷ−ＰＥ
製ロールと比べて２倍の寿命を示すと同時にロール表面
の摩耗状態もカットグロス跡を示さず鋼管先端の衝撃カ
ット摩耗にも強いことを示した。第１図に３ケ月使用後
のロールの摩耗状態を比較例２のＵＨＭＷ−ＰＥロール
と共に示すが本図からも如何に優れているかが明らかで
ある。In this way, the roll of the present invention is made of UHMW-PE of Comparative Example 2.
It showed double the lifespan compared to manufactured rolls, and at the same time, the roll surface showed no cut gloss marks and was resistant to impact cut wear at the tip of the steel pipe. FIG. 1 shows the wear condition of the roll after 3 months of use, together with the UHMW-PE roll of Comparative Example 2, and it is clear from this figure how excellent the roll is.
（比較例１）
本比較例では、従来から良く使用されている注＝１０−
型ナイロンの例を示す。本比較例の注型ナイロンは特公
昭５０−９０２６号公報に従って金型中で成形した２０
６φｘｓｏｏｚの丸棒から切削加工により２００φ球状
の幅１００鶴のロールを切削加工して作成した、走行条
件は実施例１と同一条件で使用した。使用した注型ナイ
ロンの物性と寿命を実施例１共もに示す。使用結果は第
１表に示す如く約１ケ月と短命であった。しかし、表面
の摩耗状態はスムースな状態を示した。(Comparative Example 1) In this comparative example, an example of 10-type nylon, which has been commonly used in the past, is shown. The cast nylon of this comparative example was molded in a mold according to Japanese Patent Publication No. 50-9026.
A roll having a width of 100 mm and having a spherical shape of 200 mm was cut from a round bar of 6 mm x sooz, and the running conditions were the same as in Example 1. The physical properties and life of the cast nylon used are also shown in Example 1. As shown in Table 1, the usage was short-lived, lasting about one month. However, the surface wear state was smooth.
（比較例２）
本比較例２ではＵ ＨＭ Ｗ−Ｐ Ｅ（Ｈｏ５ｔａｌｎ
ＧＬＩＲ＃４１２ ｉヘキスト社製）製ロールの例を
示す。ＵＨＭＷ−ＰＥ製ロールはＨｏ５ｔａｌｎ ＧＬ
ＩＲ＃ ４１２粉末をラム押出成形法で成形した２１２
φ丸棒から切削加工して２００φ球状、幅１００ｆｉの
ロールを作成して実施例１と同時に使用したその結果を
第１表に物性と共に示す。注型ナイロンロールに比較し
て良好な結果を示すが、表面に搬送鋼管端エツジによる
大きなカット傷が多数発生していた。(Comparative Example 2) In Comparative Example 2, UHM W-P E (Ho5taln
An example of a roll manufactured by GLIR#412 (manufactured by i-Hoechst) is shown. UHMW-PE roll is Ho5taln GL
212 made by molding IR# 412 powder by ram extrusion method
A roll having a 200φ spherical shape and a width of 100fi was prepared by cutting a φ round bar and used simultaneously with Example 1. The results are shown in Table 1 along with the physical properties. Although the results were better than cast nylon rolls, there were many large cut scratches on the surface caused by the edges of the conveying steel pipes.
寿命は３ケ月であった。The lifespan was 3 months.
第１表
（発明の効果）
以上の結果から明らかなように、本発明のポリアミド樹
脂と主鎖にエチリデンノルボルネン構造を有するアクリ
ルゴムをブレンドしてなるポリアミド樹脂を用いた鋼管
搬送ロールがすぐれた性能と寿命を示すことが明らかに
なった。Table 1 (Effects of the Invention) As is clear from the above results, the steel pipe conveying roll using the polyamide resin obtained by blending the polyamide resin of the present invention with acrylic rubber having an ethylidene norbornene structure in the main chain has excellent performance. It was revealed that this indicates the lifespan.
第１図は本発明に係る実施例及び比較例の鋼管搬送ロー
ルの３ケ月の摩耗状態図を示す。
特許出願人 三ツ星ベルト株式会社
−１３＝
第１図
手続補正書（自発）
昭和６２年 ５月ｌＩ日FIG. 1 shows a three-month wear diagram of the steel pipe conveying rolls of Examples and Comparative Examples according to the present invention. Patent applicant Mitsuboshi Belting Co., Ltd.-13 = Figure 1 procedural amendment (voluntary) May 11, 1985
Claims (1)
ンノルボルネン構造を有するアクリルゴム５０〜５重量
％をブレンドしてなるポリアミド樹脂組成物を鋼管搬送
用ロールの素材に用いることを特徴とする耐摩耗性の優
れた鋼管搬送用ロール。1. A wear-resistant product characterized in that a polyamide resin composition made by blending 50 to 95% by weight of polyamide resin and 50 to 5% by weight of acrylic rubber having an ethylidene norbornene structure in the main chain is used as a material for steel pipe conveying rolls. A roll for conveying steel pipes with excellent properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8743386A JPS62246614A (en) | 1986-04-15 | 1986-04-15 | Steel pipe conveying roll excellent in wear-resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8743386A JPS62246614A (en) | 1986-04-15 | 1986-04-15 | Steel pipe conveying roll excellent in wear-resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62246614A true JPS62246614A (en) | 1987-10-27 |
Family
ID=13914732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8743386A Pending JPS62246614A (en) | 1986-04-15 | 1986-04-15 | Steel pipe conveying roll excellent in wear-resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62246614A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02120352A (en) * | 1988-09-23 | 1990-05-08 | Bayer Ag | Molding material of graft polymer containing polyamide and tert-butyl acrylate |
| KR100401469B1 (en) * | 2001-04-13 | 2003-10-17 | 박종찬 | Method of Making A Roller of Conveyer Belt System is Consist of Polaymide for Main Material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952291A (en) * | 1982-09-20 | 1984-03-26 | 株式会社東芝 | Video ram writing controller |
| JPS60129417A (en) * | 1983-12-19 | 1985-07-10 | Toray Ind Inc | Synthetic resin coated roll |
| JPS612751A (en) * | 1984-06-13 | 1986-01-08 | Mitsuboshi Belting Ltd | Polyamide resin composition having impact resistance |
-
1986
- 1986-04-15 JP JP8743386A patent/JPS62246614A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952291A (en) * | 1982-09-20 | 1984-03-26 | 株式会社東芝 | Video ram writing controller |
| JPS60129417A (en) * | 1983-12-19 | 1985-07-10 | Toray Ind Inc | Synthetic resin coated roll |
| JPS612751A (en) * | 1984-06-13 | 1986-01-08 | Mitsuboshi Belting Ltd | Polyamide resin composition having impact resistance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02120352A (en) * | 1988-09-23 | 1990-05-08 | Bayer Ag | Molding material of graft polymer containing polyamide and tert-butyl acrylate |
| KR100401469B1 (en) * | 2001-04-13 | 2003-10-17 | 박종찬 | Method of Making A Roller of Conveyer Belt System is Consist of Polaymide for Main Material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102190836B (en) | Convex rib winding reinforced polyvinyl chloride hose for sand transportation and preparation method thereof | |
| US4563495A (en) | Resinous composition for sliding members | |
| CN101870811A (en) | Cold-resistance super tough nylon polyolefin alloy and preparation method thereof | |
| CN108485253A (en) | A kind of nylon composite materials and preparation method thereof | |
| CN104530695A (en) | Wear-resistant nylon composite material and preparation method thereof | |
| CN106700221A (en) | Metallocene linear low-density polyethylene-containing rubber plastic hose material | |
| CN108774349A (en) | A kind of UHMWPE melting extrusions level composite material and preparation method thereof, moulding process and application | |
| CN112358724B (en) | High-wear-resistance low-temperature-rise polyamide composition and preparation method and application thereof | |
| CN112143242A (en) | Physical and chemical synergistic modified low-temperature high-strength wear-resistant nylon 66 and preparation method thereof | |
| CN107057154A (en) | Wear resistant polyethylene composite pipe | |
| JPS60135446A (en) | Melt-moldable fluororesin composition | |
| CN101696291A (en) | Wearable ultrahigh molecular weight polyethylene tubular product and preparation method thereof | |
| JPS62246614A (en) | Steel pipe conveying roll excellent in wear-resistance | |
| CN114163812A (en) | Low-temperature-resistant high-wear-resistance nylon material and preparation method and application thereof | |
| CN106832908A (en) | A kind of wear-resistant, scratch-resistant engineering plastics and preparation method thereof | |
| US20030131911A1 (en) | Tool steel for plastic molds | |
| CN1280355C (en) | Polyamide composition | |
| CN113527786B (en) | Ultrahigh molecular weight polyethylene composition and preparation method thereof, ultrahigh molecular weight polyethylene pipe and preparation method and application thereof, and composite pipe | |
| CN112961419A (en) | Flame-retardant wear-resistant high-density polyethylene composite material for carrier roller and preparation method thereof | |
| CN104530526A (en) | Fibreless-core planar-transmission belt and preparation method thereof | |
| CN115304829B (en) | High-friction conveyor belt material and preparation method thereof | |
| CN111518327A (en) | Special material for buried polyethylene structural wall pipeline and preparation method thereof | |
| CN105017615A (en) | High-softening-point ultra-high-molecular-weight polyethylene alloy material and preparation method thereof | |
| CN115340715A (en) | Injection moldable high-abrasion-resistance high-density polyethylene and preparation method thereof | |
| KR101734700B1 (en) | Poly-amide resin compostion for arm of door checker device |