JPH04341576A - Method for lining inner face of cylinder - Google Patents
Method for lining inner face of cylinderInfo
- Publication number
- JPH04341576A JPH04341576A JP3111906A JP11190691A JPH04341576A JP H04341576 A JPH04341576 A JP H04341576A JP 3111906 A JP3111906 A JP 3111906A JP 11190691 A JP11190691 A JP 11190691A JP H04341576 A JPH04341576 A JP H04341576A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- lining
- coating layer
- powder
- cylinder
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000011247 coating layer Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims description 9
- 239000002612 dispersion medium Substances 0.000 claims description 8
- 238000007581 slurry coating method Methods 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920001875 Ebonite Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- NUEWEVRJMWXXFB-UHFFFAOYSA-N chromium(iii) boride Chemical compound [Cr]=[B] NUEWEVRJMWXXFB-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は各種管材や樹脂の射出・
押出機シリンダ等の筒状体の内面のライニング方法に関
する。[Industrial Application Field] The present invention is applicable to the injection and
The present invention relates to a method for lining the inner surface of a cylindrical body such as an extruder cylinder.
【０００２】0002
【従来の技術】筒状体の内面に耐食・耐摩耗性あるいは
鏡面性、清浄性等の各種機能を付与するために、所期の
物性を有するライニング材によって筒状体内面にライニ
ング層を形成することが行われる。ライニング層を容易
にかつ筒状体の内面に強固に接合する方法として、特開
平１−１５４８１９号公報に開示されている方法がある
。この方法は、ライニング対象である筒状体の内部にラ
イニング層となる管体を同心状に挿入し、両部材の接触
部にレーザ光を照射しつつ、筒状体の外面より絞り加工
を行ない、両部材を接合するものである。[Prior Art] In order to impart various functions such as corrosion resistance, abrasion resistance, specularity, and cleanliness to the inner surface of a cylindrical body, a lining layer is formed on the inner surface of the cylindrical body using a lining material having desired physical properties. What is done is done. As a method for easily and firmly bonding a lining layer to the inner surface of a cylindrical body, there is a method disclosed in JP-A-1-154819. This method involves inserting the tubular body concentrically into the cylindrical body to be lined, and drawing the lining from the outer surface of the cylindrical body while irradiating the contact area between the two members with a laser beam. , which joins both members.
【０００３】0003
【発明が解決しようとする課題】しかしながら、ソリッ
ドのライニング材は、高密度エネルギーのレーザ光が照
射されると急激な熱勾配（熱衝撃） が生じ、ビームの
進行方向に多数のヒートクラックが発生する。このクラ
ックはレーザ光の照射によって溶融したライニング材の
溶融プールより深く、ビード直下に多数残留し、品質欠
陥を招来する。尚、クラックの深さはビードの厚み、即
ち照射エネルギーに比例するため、クラックの発生は不
可避的に生じる。もっとも、筒状体およびライニング用
管体が共に靭性の高い溶接性の良好な材料であれば熱衝
撃によるヒートクラックはある程度回避されるが、適用
される材質上大きな制約が生じ、通常の耐食、耐摩耗材
は適用困難である。また、両者の接合に際し、外側の筒
状体を絞り加工する必要があるため、肉厚の大きい筒状
体の内面ライニングに適用し難いという問題がある。[Problem to be solved by the invention] However, when a solid lining material is irradiated with a high-density energy laser beam, a sharp thermal gradient (thermal shock) occurs, and many heat cracks occur in the direction of beam propagation. do. These cracks are deeper than the molten pool of the lining material melted by laser beam irradiation and remain in large numbers directly under the bead, resulting in quality defects. Incidentally, since the depth of a crack is proportional to the thickness of the bead, that is, the irradiation energy, cracks inevitably occur. However, if both the cylindrical body and the lining tube are made of materials with high toughness and good weldability, heat cracks due to thermal shock can be avoided to some extent, but there are major restrictions on the materials that can be applied, and normal corrosion resistance and Wear-resistant materials are difficult to apply. Furthermore, since it is necessary to draw the outer cylindrical body when joining the two, there is a problem in that it is difficult to apply it to the inner lining of a thick cylindrical body.
【０００４】本発明はかかる問題に鑑みなされたもので
、筒状体の材質、肉厚に拘らず、その内面にヒートクラ
ックを発生させることなく、所期のライニング層を強固
に接合形成することができる筒状体内面のライニング方
法を提供することを目的とする。The present invention was developed in view of the above problem, and it is an object of the present invention to firmly bond and form a desired lining layer without causing heat cracks on the inner surface of the cylindrical body, regardless of the material and wall thickness of the cylindrical body. An object of the present invention is to provide a method for lining the inner surface of a cylindrical body.
【０００５】[0005]
【課題を解決するための手段】本発明は、筒状体の内面
にライニング材の粉末により粉末被覆層を形成し、該粉
末被覆層にレーザ光を照射しつつ溶融すると共に溶融部
を筒状体内面に溶着させ凝固させてライニング層を形成
することを発明の構成とする。前記粉末被覆層の形成に
際しては、分散媒中にライニング材の粉末を分散させた
スラリーを筒状体の内面に塗布し、スラリー塗布層より
分散媒を除去することによって、容易に形成できる。[Means for Solving the Problems] The present invention forms a powder coating layer on the inner surface of a cylindrical body using powdered lining material, melts the powder coating layer while irradiating it with a laser beam, and forms the melted portion into a cylindrical shape. The structure of the invention is to form a lining layer by welding and solidifying the inner surface of the body. The powder coating layer can be easily formed by applying a slurry in which lining material powder is dispersed in a dispersion medium to the inner surface of the cylindrical body, and removing the dispersion medium from the slurry coating layer.
【０００６】[0006]
【作用】筒状体の内面に形成された粉末被覆層は、レー
ザ光の高エネルギーにより急速に溶融され、レーザビー
ム径に沿った形状の溶融プールを形成する。該溶融プー
ルの形成の際、プール直下の筒状体内表面も部分的に溶
融される。このため、溶融プールの急冷凝固によって形
成されたライニング層は筒状体内面に強固に溶融接合さ
れた状態となる。尚、粉末被覆層の形成の際、有機バイ
ンダーを使用しても、粉末被覆層中に残留したバインダ
ーは、レーザ光の照射時に蒸発除去される。[Operation] The powder coating layer formed on the inner surface of the cylindrical body is rapidly melted by the high energy of the laser beam, forming a molten pool shaped along the diameter of the laser beam. During the formation of the melt pool, the inner surface of the cylindrical body directly below the pool is also partially melted. Therefore, the lining layer formed by rapid solidification of the molten pool is firmly fused and bonded to the inner surface of the cylindrical body. Note that even if an organic binder is used when forming the powder coating layer, the binder remaining in the powder coating layer is evaporated and removed during laser light irradiation.
【０００７】粉末被覆層の溶融および溶融プール直下の
筒状体表面の溶融深さは、粉末被覆層に照射するレーザ
ビームのエネルギー（入力ワット数） の調整により制
御可能であり、筒状体内面にレーザビームが直接照射さ
れないため、該内面すなわち接合面におけるヒートクラ
ックの発生が回避される。従って、ライニング材料や筒
状体に材質上の制約は生じず、又筒状体の肉厚に拘らず
、所期のライニング層を筒状体内面に形成できる。[0007] The melting of the powder coating layer and the melting depth of the surface of the cylindrical body directly below the molten pool can be controlled by adjusting the energy (input wattage) of the laser beam irradiated to the powder coating layer. Since the laser beam is not directly irradiated on the inner surface, that is, on the bonding surface, the occurrence of heat cracks is avoided. Therefore, there are no restrictions on the lining material or the cylindrical body, and a desired lining layer can be formed on the inner surface of the cylindrical body regardless of the wall thickness of the cylindrical body.
【０００８】また、本発明の実施に際しては、筒状体の
内部にレーザ反射プリズムを軸心上に沿って相対移動か
つ相対回転自在に支持するだけで、筒状体の外部より軸
心に沿って入射されたレーザ光を反射プリズムを介して
筒状体内周面全域に容易に照射することができ、ライニ
ング対象の筒状体の内径や長さにほとんど左右されず、
所期のライニング層を容易に形成することができる。Furthermore, in carrying out the present invention, by simply supporting the laser reflecting prism inside the cylindrical body so as to be relatively movable and relatively rotatable along the axis, It is possible to easily irradiate the entire circumferential surface of the cylindrical body with the laser light incident on it through the reflective prism, and it is almost unaffected by the inner diameter and length of the cylindrical body to be lined.
A desired lining layer can be easily formed.
【０００９】[0009]
【実施例】本発明のライニング対象となる筒状体として
は、管材や中実材の中心に孔明け加工を施した各種金属
材を用いることができる。材質は、機械構造用炭素鋼や
合金鋼等、特に制限はない。本発明を実施するには、ま
ず、筒状体の内面に所期のライニング材の粉末からなる
粉末被覆層を形成する。前記ライニング材の粉末として
は、ライニング層に要求される耐摩耗性や耐食性等の物
性に応じて、Ｎｉ基やＣｏ基等の合金粉末又はこれらの
粉末に周期律表の第４， ５， ６族の金属の炭化物、
窒化物、硼化物のいずれか一種以上のセラミックス粉末
が添加された混合粉末を挙げることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS As the cylindrical body to be lined in the present invention, various metal materials such as pipe materials or solid materials with a hole drilled in the center can be used. There are no particular restrictions on the material, such as carbon steel for mechanical structures or alloy steel. To carry out the present invention, first, a powder coating layer made of powder of a desired lining material is formed on the inner surface of a cylindrical body. The powder of the lining material may be Ni-based or Co-based alloy powder, or powders containing powders of powders such as powders of powders 4, 5, and 6 of the periodic table, depending on the physical properties such as abrasion resistance and corrosion resistance required for the lining layer. carbides of group metals,
Examples include mixed powders to which ceramic powder of one or more of nitrides and borides is added.
【００１０】筒状体の内周面に前記粉末被覆層を形成す
るには、前記粉末に分散媒を加えて混合したスラリーを
準備し、図１に示すように、該スラリー２を回転自在に
支持された筒状体１ の内部に注入し、その両開口端に
装着された端板３ の内周部に設けられたポーラス部材
４ からスラリー塗布層７ 中の液分を脱液する。同図
中、５は硬質ゴムローラ、６はスラリー供給用の注入樋
である。
この方法は、筒状体１が長尺の場合、特に有効な方法で
ある。筒状体１ が短尺のものや非円筒状のものでは旋
盤のチャック機構を適用すればよい。In order to form the powder coating layer on the inner peripheral surface of the cylindrical body, a slurry is prepared by adding a dispersion medium to the powder, and as shown in FIG. 1, the slurry 2 is rotatably rotated. The slurry is injected into the supported cylindrical body 1, and the liquid in the slurry coating layer 7 is removed from the porous member 4 provided on the inner periphery of the end plate 3 attached to both open ends thereof. In the figure, 5 is a hard rubber roller, and 6 is an injection gutter for supplying slurry. This method is particularly effective when the cylindrical body 1 is long. If the cylindrical body 1 is short or non-cylindrical, a lathe chuck mechanism may be used.
【００１１】前記スラリーの分散媒としては、水、揮発
性有機溶剤、これらの液体に有機バインダーを添加した
ものを使用することができる。有機バインダーとしては
、天然又は合成の高分子物質を水や揮発性有機溶剤に溶
かした各種接着剤を利用することができる。スラリー塗
布層７ から液分が脱液された筒状体１ は、次に、図
２に示すように、減圧状態で加熱乾燥される。乾燥室９
には排気孔１０、ヒータ１１が設けられており、筒状
体１ は回転ローラ１２上に載置されて低速回転下で乾
燥される。加熱温度は、バインダーを含む分散媒を使用
したときは、バインダーが燃焼消失する温度に設定すれ
ばよい。As the dispersion medium for the slurry, water, a volatile organic solvent, or a mixture of these liquids with an organic binder added can be used. As the organic binder, various adhesives made by dissolving natural or synthetic polymeric substances in water or volatile organic solvents can be used. The cylindrical body 1 from which the liquid has been removed from the slurry coating layer 7 is then heated and dried under reduced pressure, as shown in FIG. Drying room 9
is provided with an exhaust hole 10 and a heater 11, and the cylindrical body 1 is placed on a rotating roller 12 and dried under low speed rotation. When a dispersion medium containing a binder is used, the heating temperature may be set to a temperature at which the binder is burnt out.
【００１２】次に、脱脂・乾燥された粉末被覆層１４を
有する筒状体１ は、図３に示すように、回転下で、粉
末被覆層１４にレーザ光が照射される。筒状体１ は硬
質ゴムローラ５ によって回転自在に支持されており、
その一端開口には先端部にレーザ反射プリズム１５が付
設された支持軸１６が軸心方向に沿って進退自在に挿入
されている。
又、他端開口からレーザ発振器１７から発射されたレー
ザ光が軸心方向に沿って筒状体１ の内部に入射されて
いる。レーザ光はプリズム１５に入射すると直角方向に
屈折して、粉末被覆層１４に照射され、照射部分のライ
ニング粉末を溶融して、溶融プールを形成する。この際
、レーザ発振器の出力を調整して、筒状体１ の内表面
もわずかに溶融させるようにする。支持軸１６を連続的
に後退させることにより、プリズム１５の反射位置も後
退し、粉末被覆層１４は順次溶融され、急冷凝固してラ
イニング層１８になると共に筒状体１ の内周面に強固
に溶着接合される。
尚、Ａｒガス等の不活性ガス１９を粉末被覆層１４の内
面に流しておくことにより、溶融プールの酸化を防止す
ることができる。Next, the cylindrical body 1 having the degreased and dried powder coating layer 14 is rotated, and the powder coating layer 14 is irradiated with a laser beam, as shown in FIG. The cylindrical body 1 is rotatably supported by a hard rubber roller 5.
A support shaft 16 having a laser reflecting prism 15 attached to its tip is inserted into the opening at one end so as to be movable forward and backward along the axial direction. Further, the laser beam emitted from the laser oscillator 17 is incident on the inside of the cylindrical body 1 along the axial direction from the other end opening. When the laser beam is incident on the prism 15, it is refracted in a right angle direction, and is irradiated onto the powder coating layer 14, melting the lining powder in the irradiated area to form a molten pool. At this time, the output of the laser oscillator is adjusted so that the inner surface of the cylindrical body 1 is also slightly melted. By continuously retracting the support shaft 16, the reflection position of the prism 15 is also retracted, and the powder coating layer 14 is sequentially melted, rapidly solidified, and becomes the lining layer 18, and is firmly attached to the inner peripheral surface of the cylindrical body 1. It is welded and joined. Note that by flowing an inert gas 19 such as Ar gas over the inner surface of the powder coating layer 14, oxidation of the molten pool can be prevented.
【００１３】本発明のライニング方法は、金属， 鉱物
， 鉱油， 食品， 化学薬品等の輸送管、樹脂機械用
各種シリンダ、その他ストレートダイやクロスヘッドダ
イ等の筒状体の内面ライニング手段として好適である。
次に、具体的実施例として、樹脂押出し成形機用長尺単
軸シリンダの内面ライニング例を示す。
（１） ＳＣＭ４４０ 調質材（Ｈｓ３５） 、φ３２
０ ×４１００ｍｍの素材に深孔穿孔機により内径φ９
９ｍｍの孔を明けて、シリンダ本体（円筒状体） を製
作した。内面粗度はＲｍａｘ ２０〜２５Ｓに加工した
。
（２） （１）と並行して、Ｎｉ基耐摩・耐食合金にク
ロム硼化物（ＣｒＢ）、タングステンカーバイド（ＷＣ
）を重量パーセントで２０％添加し、乾式高エネルギー
ボールミルにより３Ｈｒ 粉砕混合し、ライニング用混
合粉末を得た。The lining method of the present invention is suitable as a means for lining the inner surface of cylindrical bodies such as transport pipes for metals, minerals, mineral oils, foods, chemicals, etc., various cylinders for resin machines, and other cylindrical bodies such as straight dies and crosshead dies. be. Next, as a specific example, an example of the inner lining of a long single-shaft cylinder for a resin extrusion molding machine will be shown. (1) SCM440 tempered material (Hs35), φ32
0 x 4100mm material with inner diameter φ9 using a deep hole drilling machine
A 9mm hole was drilled and the cylinder body (cylindrical body) was manufactured. The inner surface roughness was processed to Rmax 20-25S. (2) In parallel with (1), chromium boride (CrB) and tungsten carbide (WC) are added to the Ni-based wear and corrosion resistant alloy.
) was added in an amount of 20% by weight and pulverized and mixed for 3 hours using a dry high-energy ball mill to obtain a mixed powder for lining.
【００１４】該混合粉末を １００重量部、メチルアル
コールを １００重量部、ワックス（木ロウ） を１０
重量部として配合し、ニーダで２Ｈｒ 湿式混合し、粉
末スラリーを得た。
（３） シリンダ本体を図１の遠心機に取付け、遠心重
力倍数（Ｇ）が約６０〜６５Ｇとなる回転数を与え、シ
リンダ本体の開口端より、端板を介してスラリーを注入
した。注入量は、本体内面に約４ｍｍ厚のスラリー塗布
層が形成される量とした。注入後メチルアルコールが脱
液されるまで約２０分間回転を継続した。
（４） 脱液後、図２の減圧炉に装入し、低回転下で室
温から ４５０Ｋまで昇温し、脱脂、乾燥した。
（５） 粉末被覆層が形成されたシリンダ本体を、図１
の遠心機に再度セットし、図３のように、先端に反射プ
リズムを取付けた支持軸をレーザ入射側開口端まで挿入
し、レーザ光のセンタリングを行ない、軸心にプリズム
をセットした。その後、支持軸挿入側よりＡｒ ガスを
微量（１ｌ／ｍｉｎ ）流入させ、同時にシリンダ本体
を内面周速が ２５０〜 ２８０ｍｍ／ｍｉｎ となる
ように回転させ、レーザビームを １．８ＫＷの出力で
照射した。この際、プリズムの送り速度は５ｍｍ／Ｒｅ
ｖとした。この結果、層厚 １．８〜 ２．０ｍｍのラ
イニング層が全長に亘って接合されたシリンダ素管が得
られた。
（６） シリンダ素管の内面を機械加工し、外径φ ３
１５ｍｍ×内径φ９６ｍｍ×４０６０ｍｍ（Ｌ／Ｄ ＝
４２） の長尺複合シリンダを得た。ライニング層の表
面硬度はＨＲＣ６６であった。[0014] 100 parts by weight of the mixed powder, 100 parts by weight of methyl alcohol, and 10 parts by weight of wax (wood wax).
They were blended in parts by weight and wet mixed for 2 hours in a kneader to obtain a powder slurry. (3) The cylinder body was attached to the centrifuge shown in FIG. 1, the rotation speed was set such that the centrifugal gravity multiple (G) was approximately 60 to 65 G, and slurry was injected from the open end of the cylinder body through the end plate. The injection amount was such that a slurry coating layer with a thickness of about 4 mm was formed on the inner surface of the main body. After injection, rotation was continued for about 20 minutes until the methyl alcohol was removed. (4) After deliquifying, it was placed in the vacuum furnace shown in Figure 2, heated at low speed from room temperature to 450K, degreased, and dried. (5) The cylinder body on which the powder coating layer is formed is shown in Figure 1.
As shown in Fig. 3, the support shaft with a reflective prism attached to the tip was inserted as far as the opening end on the laser incidence side, the laser beam was centered, and the prism was set on the axis. After that, a small amount of Ar gas (1 l/min) was introduced from the support shaft insertion side, and at the same time, the cylinder body was rotated so that the inner peripheral speed was 250 to 280 mm/min, and a laser beam was irradiated with an output of 1.8 KW. . At this time, the feed speed of the prism is 5 mm/Re
v. As a result, a cylinder base tube was obtained in which a lining layer having a layer thickness of 1.8 to 2.0 mm was joined over the entire length. (6) Machining the inner surface of the cylinder tube to reduce the outer diameter to φ3
15mm x inner diameter φ96mm x 4060mm (L/D =
42) A long composite cylinder was obtained. The surface hardness of the lining layer was HRC66.
【００１５】[0015]
【発明の効果】以上説明した通り、本発明のライニング
方法は、筒状体の内面にライニング材の粉末からなる粉
末被覆層を形成し、該被覆層にレーザ光を照射するので
、高エネルギーのレーザ光によってライニング材を容易
に溶融することができ、又レーザ光が直接筒状体内面に
照射されないためヒートクラックの発生のおそれがなく
、所期のライニング層を筒状体内面に強固に溶着接合す
ることができる。また、実施に際し、筒状体の材質、肉
厚、寸法に制限がほとんどなく、利用価値が高いと同時
にレーザ光の高エネルギー密度によって、融点の高いセ
ラミックス材料等のライニング層形成も可能となった。As explained above, the lining method of the present invention forms a powder coating layer made of lining material powder on the inner surface of a cylindrical body, and irradiates the coating layer with a laser beam. The lining material can be easily melted by laser light, and since the laser light is not directly irradiated onto the inner surface of the cylindrical body, there is no risk of heat cracks, and the desired lining layer is firmly welded to the inner surface of the cylindrical body. Can be joined. In addition, there are almost no restrictions on the material, wall thickness, and dimensions of the cylindrical body, and the use value is high.At the same time, the high energy density of the laser beam makes it possible to form a lining layer of ceramic materials with a high melting point. .
【図１】スラリー塗布層の形成状態を示す筒状体の断面
図である。FIG. 1 is a cross-sectional view of a cylindrical body showing the state of formation of a slurry coating layer.
【図２】スラリー塗布層の脱脂、乾燥状態を示す筒状体
の断面図である。FIG. 2 is a cross-sectional view of the cylindrical body showing the degreasing and drying state of the slurry coating layer.
【図３】粉末被覆層にレーザ光を照射することによりラ
イニング層の形成状態を示す筒状体の断面図である。FIG. 3 is a cross-sectional view of a cylindrical body showing how a lining layer is formed by irradiating a powder coating layer with a laser beam.
１ 筒状体 ７ スラリー塗布層 １４ 粉末被覆層 １５ レーザ反射プリズム １７ レーザ発振器 １８ ライニング層 1 Cylindrical body 7 Slurry coating layer 14 Powder coating layer 15 Laser reflecting prism 17 Laser oscillator 18 Lining layer
Claims (3)
より粉末被覆層を形成し、該粉末被覆層にレーザ光を照
射しつつ溶融すると共に溶融部を筒状体内面に溶着させ
凝固させてライニング層を形成することを特徴とする筒
状体内面のライニング方法。1. A powder coating layer is formed on the inner surface of a cylindrical body using powdered lining material, and the powder coating layer is melted while being irradiated with a laser beam, and the melted portion is welded to the inner surface of the cylindrical body and solidified. A method for lining the inner surface of a cylindrical body, the method comprising forming a lining layer.
させたスラリーを筒状体の内面に塗布し、スラリー塗布
層より分散媒を除去して粉末被覆層を形成する請求項１
に記載した筒状体内面のライニング方法。2. A powder coating layer is formed by applying a slurry in which lining material powder is dispersed in a dispersion medium to the inner surface of the cylindrical body, and removing the dispersion medium from the slurry coating layer.
The method for lining the inner surface of a cylindrical body described in .
、Ｃｏ基合金粉末又はこれらの粉末に周期律表の第４，
５，６族の金属の炭化物、窒化物、硼化物のいずれか一
種以上の粉末が添加された混合粉末であり、分散媒は有
機バインダー、揮発性有機溶剤、水のいずれか一種以上
からなる液体である請求項２に記載した筒状体内面のラ
イニング方法。3. The powder of the lining material is a Ni-based alloy powder, a Co-based alloy powder, or these powders contain powders from the fourth group of the periodic table.
It is a mixed powder to which one or more powders of carbides, nitrides, and borides of Group 5 and 6 metals are added, and the dispersion medium is a liquid consisting of one or more of organic binders, volatile organic solvents, and water. The method for lining the inner surface of a cylindrical body according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3111906A JPH04341576A (en) | 1991-05-16 | 1991-05-16 | Method for lining inner face of cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3111906A JPH04341576A (en) | 1991-05-16 | 1991-05-16 | Method for lining inner face of cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04341576A true JPH04341576A (en) | 1992-11-27 |
Family
ID=14573091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3111906A Pending JPH04341576A (en) | 1991-05-16 | 1991-05-16 | Method for lining inner face of cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04341576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0834599A1 (en) * | 1996-09-26 | 1998-04-08 | Günter Hackerodt | Process for coating inner sliding surfaces of cylinders, especially aluminium surfaces |
| US6534134B1 (en) * | 1998-11-20 | 2003-03-18 | University Of Puerto Rico | Apparatus and method for pulsed laser deposition of materials on wires and pipes |
-
1991
- 1991-05-16 JP JP3111906A patent/JPH04341576A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0834599A1 (en) * | 1996-09-26 | 1998-04-08 | Günter Hackerodt | Process for coating inner sliding surfaces of cylinders, especially aluminium surfaces |
| US6534134B1 (en) * | 1998-11-20 | 2003-03-18 | University Of Puerto Rico | Apparatus and method for pulsed laser deposition of materials on wires and pipes |
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