JPH0665711A - Masking method for thermal spraying of cylinder block - Google Patents

Masking method for thermal spraying of cylinder block

Info

Publication number
JPH0665711A
JPH0665711A JP22594392A JP22594392A JPH0665711A JP H0665711 A JPH0665711 A JP H0665711A JP 22594392 A JP22594392 A JP 22594392A JP 22594392 A JP22594392 A JP 22594392A JP H0665711 A JPH0665711 A JP H0665711A
Authority
JP
Japan
Prior art keywords
cylinder
masking
cylinder block
bore
disassembled
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
Application number
JP22594392A
Other languages
Japanese (ja)
Inventor
Koji Harada
弘司 原田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP22594392A priority Critical patent/JPH0665711A/en
Publication of JPH0665711A publication Critical patent/JPH0665711A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide the method for completely masking the inside surface of the crank case part of a cylinder block as the method for masking the surface of the crank case at the time of forming a thermally sprayed film on the wall surface of the cylinder bore of the cylinder block. CONSTITUTION:This method consists in masking the inside surface of the crank case part 4 of the cylinder block, which is smaller in the spacing L between the internal end faces of opposite crank journal parts 3a, 3b of the cylinder block 1 than the inside diameter(d) of the cylinder bore by inserting a masking pipe 11 into the crank case part at the time of the thermal spraying treatment of the inside surface of the cylinder bore 2a. This masking pipe 11 is a flanged cylinder which can be disassembled. The outside diameter of this flange 12 is larger than the inside diameter of the bore and the outside diameter of the cylinder 13 is smaller than the spacing between the internal end faces. In addition, the disassembled parts 11a, 11b of the masking pipe 11 can pass the spacing. These disassembled parts are assembled within the crank case part 4 and thereafter, the flange 12 is pressed to the bottom end face of the cylinder bore 2a.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、エンジンのシリンダブ
ロックに関し、より詳しくは、シリンダブロックのシリ
ンダボアの壁面に溶射膜を形成する際にクランクケース
面をマスクする方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine cylinder block, and more particularly to a method of masking a crankcase surface when forming a sprayed film on the wall surface of a cylinder bore of a cylinder block.

【0002】[0002]

【従来の技術】シリンダブロックのボア内面に耐摩耗性
の溶射膜を形成することがなされていおり、本出願人
も、例えば、特願平2−183286号にて形成方法を
提案した。そして、従来、ボア壁面の溶射処理を施す場
合には、シリンダブロックのボア下部でのクランクケー
ス部での内面(壁面)に不用な溶射粒子が付着しないよ
うにマスキング管を用いて、例えば、図1および図2に
示した如くに行われる。この場合には、鋳鉄ないしアル
ミニウム合金による鋳造と、機械加工とによってシリン
ダブロック1を製作する。シリンダブロック1には、シ
リンダボア2a、2bおよび2cがボア径dで設けら
れ、これらボアの間でボアの下部に相対するクランクシ
ャフト(図示せず)のジャーナル部(軸受部)3a、3
bが所定の内部端面間距離Lで設けられている。この距
離Lがボア径dよりも小さい。そして、シリンダボアと
ジャーナル部との間が、クランクケース部4であり、ボ
ア径よりも大きい空洞部を構成している。
2. Description of the Related Art A wear-resistant sprayed coating has been formed on the inner surface of a bore of a cylinder block, and the applicant of the present invention also proposed a forming method in, for example, Japanese Patent Application No. 2-183286. Then, conventionally, when performing thermal spraying treatment on the bore wall surface, a masking tube is used to prevent unnecessary thermal spray particles from adhering to the inner surface (wall surface) of the crankcase portion at the lower portion of the bore of the cylinder block, for example, as shown in FIG. 1 and as shown in FIG. In this case, the cylinder block 1 is manufactured by casting with cast iron or an aluminum alloy and machining. The cylinder block 1 is provided with cylinder bores 2a, 2b and 2c with a bore diameter d, and journal portions (bearing portions) 3a, 3 of a crankshaft (not shown) facing the lower part of the bore between these bores.
b is provided at a predetermined distance L between the inner end faces. This distance L is smaller than the bore diameter d. The crankcase portion 4 is located between the cylinder bore and the journal portion, and constitutes a hollow portion having a diameter larger than the bore diameter.

【0003】それぞれのシリンダボア2a(2b、2
c)の内面に、溶射ガン6から溶射粒子7を照射して溶
射膜8を形成する。この溶射処理の際には、シリンダブ
ロック1をシリンダボア2aの中心軸を中心にして回転
させ、かつ溶射ガン6を下方向(または上方向)に移動
させて、ボア壁面全体に均一な溶射膜8が形成される。
この時に、下方よりマスキング管9をボア2aの下端面
のレベルまで挿入して、クランクケース部4の内面に溶
射粒子が付着するのを低減している。
Each cylinder bore 2a (2b, 2
The inner surface of c) is irradiated with the spray particles 7 from the spray gun 6 to form the spray film 8. During this thermal spraying process, the cylinder block 1 is rotated around the central axis of the cylinder bore 2a, and the thermal spray gun 6 is moved downward (or upward) to obtain a uniform thermal spray film 8 on the entire bore wall surface. Is formed.
At this time, the masking tube 9 is inserted from below to the level of the lower end surface of the bore 2a to reduce the adhesion of thermal spray particles to the inner surface of the crankcase portion 4.

【0004】[0004]

【発明が解決しようとする課題】従来のマスキング管9
は、その外径はシリンダボア径dよりも大きいが、クラ
ンクジャーナル部3a、3bとはぶつからないように2
つの平行平面(図2)を有する円筒管の形態である。こ
のマスキング管9の使用によって、クランクケース部4
の壁面での一部(図2におけるマスキング管9の円弧部
分に対応する部分)には溶射粒子は遮られて届かない
が、ジャーナル部3a、3b上方の壁面部分(図2にお
けるマスキング管9の平面部分に対応する部分)には図
1に示した隙間を通って溶射粒子7が付着する。マスキ
ング管を使用しない場合よりも使用することによって、
不用な溶射粒子がクランクケース部内面に付着するのを
大幅に減らすことができた訳であるが、依然として、付
着してしまう。
Conventional masking tube 9
Has an outer diameter larger than the cylinder bore diameter d, but is designed to avoid collision with the crank journal portions 3a, 3b.
It is in the form of a cylindrical tube with two parallel planes (Fig. 2). By using this masking tube 9, the crankcase portion 4
Although the sprayed particles are blocked by a portion of the wall surface of the mask (the portion corresponding to the circular arc portion of the masking tube 9 in FIG. 2) and cannot reach, the wall portion above the journal portions 3a, 3b (the masking tube 9 in FIG. 2). The sprayed particles 7 are attached to the portion corresponding to the plane portion) through the gap shown in FIG. By using the masking tube more than without
Although it was possible to greatly reduce the adhesion of useless spray particles to the inner surface of the crankcase portion, they still adhered.

【0005】この付着した溶射粒子はクランクケース部
内面では密着性が悪いために、エンジン作動中に脱落す
る恐れがある。脱落した溶射粒子(金属粉体)はクラン
クケース内のエンジンオイルへ混入し、微小なものはオ
イルと共に循環し、摺動部位へのかみ込み、焼き付き発
生の原因となる恐れがある。したがって、本発明の目的
は、シリンダブロックのクランクケース部内面を溶射粒
子から完全にマスキングする方法を提供することであ
る。
The adhered thermal spray particles have a poor adhesion on the inner surface of the crankcase portion, and therefore may fall off during engine operation. The sprayed particles (metal powder) that have fallen off may mix into the engine oil in the crankcase, and minute particles may circulate along with the oil, causing biting into sliding parts and causing seizure. Therefore, it is an object of the present invention to provide a method of completely masking the inner surface of the crankcase portion of a cylinder block from spray particles.

【0006】[0006]

【課題を解決するための手段】上述の目的が、エンジン
のシリンダブロックでの相対するクランクジャーナル部
の内部端面間隔Lがシリンダボア内径dよりも小さなシ
リンダブロックでのクランクケース部の内面を、シリン
ダボア内面の溶射処理の際に、マスキング管を挿入して
マスクする方法において、前記マスキング管が分解可能
のフランジ付き円筒であり、該フランジの外径Dが前記
シリンダ内径dより大きく、該円筒の外径Eが内部端面
間隔Lよりも小さく、かつ前記マスキング管を分解した
ときにそれぞれの分解部品が前記クランクジャーナル部
を通過でき、該分解部品を前記クランクケース部の内部
にて組立ててから前記フランジをシリンダボアの下端面
に当接させることを特徴とするシリンダブロック溶射用
マスク方法によって達成される。
SUMMARY OF THE INVENTION The above-mentioned object is to make the inner surface of the crankcase portion of the cylinder block in which the inner end surface distance L of the opposing crank journal portions in the cylinder block of the engine is smaller than the inner diameter d of the cylinder bore, the inner surface of the cylinder bore. In the method of masking by inserting a masking tube during the thermal spraying treatment of No. 1, the masking tube is a decomposable cylinder with a flange, and the outer diameter D of the flange is larger than the cylinder inner diameter d and the outer diameter of the cylinder is E is smaller than the inner end face distance L, and when the masking tube is disassembled, each disassembled part can pass through the crank journal part, and the disassembled part is assembled inside the crankcase part before the flange is assembled. According to a mask method for spraying a cylinder block, which is characterized in that it is brought into contact with the lower end surface of the cylinder bore. It is achieved.

【0007】分解可能のフランジ付き円筒のマスキング
管を、斜めに2分割し、フランジの割合の大きい方の分
解部品はその上端の分割面と直角方向での幅(y)が内
部端面間隔(L)よりも小さいことが好ましい。分解可
能のフランジ付き円筒のマスキング管を、垂直方向に3
分割し、その中の最小分割部品はその外径円弧を結ぶ直
線(x)が内部端面間隔(L)よりも小さく、残りの2
つの分割部品は同じサイズであることが好ましい。
A cylindrical masking tube with a flange that can be disassembled is diagonally divided into two parts, and the disassembled part with the larger proportion of the flange has a width (y) in the direction perpendicular to the divided surface of the upper end of the disassembled part which is equal to the internal end face spacing (L). ) Is preferable. Detachable cylindrical masking tube with a flange,
The minimum divided part among the divided parts has a straight line (x) connecting the outer diameter circular arcs smaller than the internal end face interval (L), and the remaining 2 parts.
Preferably, the two pieces are of the same size.

【0008】[0008]

【作用】本発明に係る溶射時のマスク方法によれば、分
解部品は相対するクランクジャーナル部の内部端面間隔
(L)よりも小さい幅でこの間隔からクランクケース部
内に挿入することができ、最後に挿入する分解部品でマ
スキング管に組み立てると、そのマスキング管はシリン
ダボアの下端面の全てと当接して、クランクケース部へ
の溶射粒子の漏れを確実に防止する。
According to the mask method for spraying according to the present invention, the disassembled component can be inserted into the crankcase portion from this interval with a width smaller than the internal end face spacing (L) of the opposing crank journals. When the masking tube is assembled with the disassembled part to be inserted into the cylinder, the masking tube comes into contact with the entire lower end surface of the cylinder bore, and reliably prevents the sprayed particles from leaking to the crankcase portion.

【0009】[0009]

【実施例】以下、添付図面を参照して、本発明の実施態
様例によって本発明を詳細に説明する。従来のマスキン
グ管に代わる本発明に係る分割可能のマスキング管の典
型的な2種類の場合を図3および図5に示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings by way of example embodiments of the present invention. 3 and 5 show two typical cases of the dividable masking tube according to the present invention, which replaces the conventional masking tube.

【0010】実施例1 図3(a)、(b)および(c)に示すように、マスキ
ング管11はフランジ12付き円筒13であり、フラン
ジ12の外径Dはシリンダボア径dよりも少し大きく、
かつ円筒13の外径Eはクランクジャーナル部の内部端
面間隔(L)よりも小さい。そして、本発明にしたがっ
て、フランジ付き円筒のマスキング管11を斜めに2分
割し、フランジの割合の大きい方の分解部品11aはそ
の上端の分割面11cと直角方向での幅(y)が内部端
面間隔(L)よりも小さい。他方の分解部品11bは円
筒13の割合の大きいものである。
Embodiment 1 As shown in FIGS. 3 (a), 3 (b) and 3 (c), the masking tube 11 is a cylinder 13 with a flange 12, and the outer diameter D of the flange 12 is slightly larger than the cylinder bore diameter d. ,
Moreover, the outer diameter E of the cylinder 13 is smaller than the inner end face distance (L) of the crank journal portion. According to the present invention, the cylindrical masking tube 11 with a flange is diagonally divided into two parts, and the disassembled part 11a having the larger proportion of the flange has a width (y) in the direction perpendicular to the divided surface 11c at the upper end of the disassembled part 11a. It is smaller than the interval (L). The other disassembled component 11b has a large percentage of the cylinder 13.

【0011】図1および図2に図示したシリンダブロッ
クと同じシリンダブロック1を用意し、図4に示すよう
に、まず分解部品11aを下方よりクランクジャーナル
部3a、3bの間を通してクランクケース4の内部まで
挿入する。次に、他方の分解部品11bを分割面11c
に沿ってクランクケース4の内部まで挿入し、図3のよ
うに一つのマスキング管11に組み立てる。このマスキ
ング管11をそのフランジ12がボア2aの下端面に当
接させる。
A cylinder block 1 which is the same as the cylinder block shown in FIGS. 1 and 2 is prepared. As shown in FIG. 4, first, the disassembled part 11a is passed from below between the crank journal parts 3a and 3b to the inside of the crankcase 4. Insert up to. Next, the other disassembled component 11b is attached to the dividing surface 11c.
Along the inside of the crankcase 4 and then assembled into one masking tube 11 as shown in FIG. The flange 12 of the masking tube 11 is brought into contact with the lower end surface of the bore 2a.

【0012】この状態で、従来通りに、シリンダボア2
aの内面に、溶射ガン6から溶射粒子7を照射して溶射
膜8を形成する。この溶射処理の際には、シリンダブロ
ック1をシリンダボア2aの中心軸を中心にして回転さ
せ、かつ溶射ガン6を下方向(または上方向)に移動さ
せて、ボア壁面全体に均一な溶射膜8とすることができ
る。この溶射処理において、マスキング管11がボア2
aの下端面の全周にわたって間隙の無いように当接して
いるので、溶射粒子がクランクケース部4の内面に付着
することはない。このようにして、クランクケース部4
の壁面を完全にマスキングすることができる。
In this state, in the conventional manner, the cylinder bore 2
The inner surface of a is irradiated with thermal spray particles 7 from the thermal spray gun 6 to form a thermal spray film 8. During this thermal spraying process, the cylinder block 1 is rotated around the central axis of the cylinder bore 2a, and the thermal spray gun 6 is moved downward (or upward) to obtain a uniform thermal spray film 8 on the entire bore wall surface. Can be In this thermal spraying process, the masking tube 11 has a bore 2
Since the lower end surface of a is in contact with the entire circumference of the lower end surface with no gap, the sprayed particles do not adhere to the inner surface of the crankcase portion 4. In this way, the crankcase portion 4
The wall surface of can be completely masked.

【0013】実施例2 図5(a)および(b)に示すように、マスキング管2
1はその外径形状が実施例1のマスキング管11と同じ
であり、フランジ22付き円筒23であり、フランジ2
2の外径Dはシリンダボア径dよりも少し大きく、かつ
円筒23の外径Eはクランクジャーナル部の内部端面間
隔(L)よりも小さい。そして、本発明にしたがって、
フランジ付き円筒のマスキング管21を垂直方向に3分
割し、その中の最小分解部品21cはその外径円弧を結
ぶ直線(x)が内部端面間隔(L)よりも小さく、残り
の2つの分解部品21aおよび21bは同じサイズであ
る。そして、切断面21d、21eおよび21fは直径
方向での幅を有する垂直な平面である。分解部品21a
および21bは同じサイズであるのが最も好ましいが、
サイズが異なっても良い。
Embodiment 2 As shown in FIGS. 5A and 5B, the masking tube 2
No. 1 has the same outer diameter shape as the masking tube 11 of the first embodiment, and is a cylinder 23 with a flange 22.
The outer diameter D of 2 is a little larger than the cylinder bore diameter d, and the outer diameter E of the cylinder 23 is smaller than the internal end face distance (L) of the crank journal portion. And according to the invention,
The cylindrical masking tube 21 with a flange is divided into three parts in the vertical direction, and the smallest disassembled part 21c therein is such that the straight line (x) connecting the outer diameter arcs is smaller than the inner end face spacing (L), and the remaining two disassembled parts. 21a and 21b have the same size. The cut surfaces 21d, 21e and 21f are vertical planes having a width in the diametrical direction. Disassembled parts 21a
Most preferably, and 21b are the same size,
The size may be different.

【0014】図1および図2に図示したシリンダブロッ
クと同じシリンダブロック1を用意し、図6に示すよう
に、まず分解部品21aおよび21bを窄めた状態で下
方よりクランクジャーナル部3a、3bの間を通してク
ランクケース4の内部まで挿入し、拡張する。次に、最
小分解部品21cを分割面21eおよび21fに沿って
クランクケース4の内部まで挿入し、図5のように一つ
のマスキング管21に組み立てる。このマスキング管2
1をそのフランジ12がボア2aの下端面に当接させ
る。
A cylinder block 1 which is the same as the cylinder block shown in FIGS. 1 and 2 is prepared, and as shown in FIG. 6, first, the disassembled parts 21a and 21b are closed and the crank journal portions 3a and 3b are inserted from below. Insert through the space to the inside of the crankcase 4 and expand. Next, the minimum disassembled part 21c is inserted into the crankcase 4 along the dividing surfaces 21e and 21f, and assembled into one masking tube 21 as shown in FIG. This masking tube 2
The flange 12 is brought into contact with the lower end surface of the bore 2a.

【0015】この状態で、従来通りに、シリンダボア2
aの内面に、溶射ガン6から溶射粒子7を照射して溶射
膜8を形成する。この溶射処理の際には、シリンダブロ
ック1をシリンダボア2aの中心軸を中心にして回転さ
せ、かつ溶射ガン6を下方向(または上方向)に移動さ
せて、ボア壁面全体に均一な溶射膜8とすることができ
る。この溶射処理において、マスキング管21がボア2
aの下端面の全周にわたって間隙の無いように当接して
いるので、溶射粒子がクランクケース部4の内面に付着
することはない。このようにして、実施例1と同様にク
ランクケース部4の壁面を完全にマスキングすることが
できる。
In this state, in the conventional manner, the cylinder bore 2
The inner surface of a is irradiated with thermal spray particles 7 from the thermal spray gun 6 to form a thermal spray film 8. During this thermal spraying process, the cylinder block 1 is rotated around the central axis of the cylinder bore 2a, and the thermal spray gun 6 is moved downward (or upward) so that the uniform thermal spray film 8 is formed on the entire bore wall surface. Can be In this thermal spraying process, the masking tube 21 has a bore 2
Since the lower end surface of a is in contact with the entire circumference of the lower end surface without any gap, the spray particles do not adhere to the inner surface of the crankcase portion 4. In this way, the wall surface of the crankcase portion 4 can be completely masked as in the first embodiment.

【0016】[0016]

【発明の効果】以上説明したように、本発明に係るシリ
ンダブロック溶射用マスク方法によると、分割可能なマ
スキング管を採用することで、シリンダボアの下端面と
クランクケース部との間を完全に遮断して溶射粒子のク
ランクケース部内面付着を防止する。従来発生していた
不用な粒子付着が無く、それに伴う問題も無くなる。
As described above, according to the mask method for spraying a cylinder block of the present invention, the masking pipe that can be divided is used to completely block the lower end surface of the cylinder bore from the crankcase portion. This prevents the sprayed particles from adhering to the inner surface of the crankcase portion. There is no unnecessary particle adhesion that has occurred in the past, and the problems associated therewith are eliminated.

【図面の簡単な説明】[Brief description of drawings]

【図1】従来のマスキング管を用いたシリンダボアの内
面溶射処理を行っている状態のシリンダブロックの部分
断面図である。
FIG. 1 is a partial cross-sectional view of a cylinder block in a state where an inner surface thermal spraying process of a cylinder bore using a conventional masking tube is performed.

【図2】図1のシリンダブロックの部分底面図である。FIG. 2 is a partial bottom view of the cylinder block of FIG.

【図3】(a)は本発明に係るマスク方法を実施するた
めの分割可能マスキング管の平面図である。(b)は図
3(a)の線I−Iでの断面図である。(c)は図3
(a)の矢印IIから見た側面図である。
FIG. 3 (a) is a plan view of a dividable masking tube for carrying out the mask method according to the present invention. FIG. 3B is a sectional view taken along line I-I of FIG. (C) is FIG.
It is the side view seen from the arrow II of (a).

【図4】図3のマスキング管を用いてシリンダボアの内
面溶射処理を行っている状態のシリンダブロックの部分
断面図である。
FIG. 4 is a partial cross-sectional view of the cylinder block in a state where the inner surface of the cylinder bore is sprayed using the masking tube of FIG.

【図5】(a)は本発明に係るマスク方法を実施するた
めの別の分割可能マスキング管の平面図である。(b)
は図5(a)の側面図である。
FIG. 5 (a) is a plan view of another dividable masking tube for carrying out the masking method according to the present invention. (B)
FIG. 6 is a side view of FIG.

【図6】図5のマスキング管を用いてシリンダボアの内
面溶射処理を行っている状態のシリンダブロックの部分
断面図である。
6 is a partial cross-sectional view of the cylinder block in a state where the inner surface of the cylinder bore is sprayed using the masking tube of FIG.

【符号の説明】[Explanation of symbols]

1…シリンダブロック 2a、2b、2c…シリンダボア 3a、3b…クランクジャーナル部 4…クランクケース部 6…溶射ガン 7…溶射粒子 8…溶射膜 11…分割可能マスキング管 11a、11b…分解部品 12…フランジ 13…円筒 21…分割可能マスキング管 21a、21b、21c…分解部品 22…フランジ 23…円筒 d…シリンダボア径 D…フランジ外径 L…クランクジャーナル部の内部端面間隔 E…円筒外径 DESCRIPTION OF SYMBOLS 1 ... Cylinder block 2a, 2b, 2c ... Cylinder bore 3a, 3b ... Crank journal part 4 ... Crank case part 6 ... Spraying gun 7 ... Spraying particle 8 ... Spraying film 11 ... Dividable masking tube 11a, 11b ... Disassembly part 12 ... Flange 13 ... Cylinder 21 ... Dividable masking tube 21a, 21b, 21c ... Disassembled part 22 ... Flange 23 ... Cylinder d ... Cylinder bore diameter D ... Flange outer diameter L ... Crank journal inner end face distance E ... Cylinder outer diameter

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 エンジンのシリンダブロック(1)での
相対するクランクジャーナル部(3a、3b)の内部端
面間隔(L)がシリンダボア内径(d)よりも小さなシ
リンダブロック(1)でのクランクケース部(4)の内
面を、シリンダボア(2a)内面の溶射処理の際に、マ
スキング管を挿入してマスクする方法において、前記マ
スキング管(11、21)が分解可能のフランジ付き円
筒であり、該フランジ(12、22)の外径(D)が前
記シリンダ内径(d)より大きく、該円筒(13、2
3)の外径(E)が内部端面間隔(L)よりも小さく、
かつ前記マスキング管を分解したときにそれぞれの分解
部品(11a、11b、21a、21b、21c)が前
記クランクジャーナル部(3a、3b)を通過でき、該
分解部品を前記クランクケース部(4)の内部にて組立
ててから前記フランジ(12、22)をシリンダボア
(2a)の下端面に当接させることを特徴とするシリン
ダブロック溶射用マスク方法。
1. A crankcase part in a cylinder block (1) in which an internal end face distance (L) between opposed crank journal parts (3a, 3b) in the cylinder block (1) of the engine is smaller than a cylinder bore inner diameter (d). In the method of masking the inner surface of (4) by inserting a masking tube during the thermal spraying treatment of the inner surface of the cylinder bore (2a), the masking tube (11, 21) is a decomposable cylinder with a flange. The outer diameter (D) of (12, 22) is larger than the cylinder inner diameter (d), and the cylinder (13, 2)
The outer diameter (E) of 3) is smaller than the inner end face spacing (L),
Moreover, when the masking tube is disassembled, the disassembled parts (11a, 11b, 21a, 21b, 21c) can pass through the crank journal parts (3a, 3b), and the disassembled parts are separated from the crankcase part (4). A cylinder block thermal spray mask method, characterized in that the flanges (12, 22) are brought into contact with the lower end surface of the cylinder bore (2a) after internally assembled.
JP22594392A 1992-08-25 1992-08-25 Masking method for thermal spraying of cylinder block Pending JPH0665711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22594392A JPH0665711A (en) 1992-08-25 1992-08-25 Masking method for thermal spraying of cylinder block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22594392A JPH0665711A (en) 1992-08-25 1992-08-25 Masking method for thermal spraying of cylinder block

Publications (1)

Publication Number Publication Date
JPH0665711A true JPH0665711A (en) 1994-03-08

Family

ID=16837330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22594392A Pending JPH0665711A (en) 1992-08-25 1992-08-25 Masking method for thermal spraying of cylinder block

Country Status (1)

Country Link
JP (1) JPH0665711A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910577A1 (en) * 1998-12-18 2000-06-21 Volkswagen Ag Thermal coating of cavity surfaces, especially plasma spray coating of cylinder running surfaces of an i. c. engine crank-case, comprises masking surface regions not to be coated before pretreatment and-or coating
EP1152139A1 (en) * 2000-05-03 2001-11-07 Sulzer Metco AG Device for coating cylinder walls of engine blocks
US6589605B2 (en) * 1999-08-16 2003-07-08 Ford Global Technologies, Llc Masking for engine blocks for thermally sprayed coatings and method of masking same
JP2006169619A (en) * 2004-12-20 2006-06-29 Nissan Motor Co Ltd Masking apparatus for thermally sprayed film
JP2006291336A (en) * 2005-04-14 2006-10-26 Nissan Motor Co Ltd Thermal spray masking method for cylinder block, and thermal spray masking device therefor
JP2007239000A (en) * 2006-03-07 2007-09-20 Nissan Motor Co Ltd Masking device of sprayed coating and masking method for sprayed coating
JP2007314824A (en) * 2006-05-24 2007-12-06 Toyota Motor Corp Masking tool for thermal spraying
JP2008025032A (en) * 2006-07-24 2008-02-07 Sulzer Metco Ag Masking system for the masking of crank chamber of internal combustion engine
JP2008150689A (en) * 2006-12-19 2008-07-03 Nissan Motor Co Ltd Thermal spray masking member and thermal spray masking method
US7823284B2 (en) 2005-01-28 2010-11-02 Nissan Motor Co., Ltd. Masking an engine block during coating application
CN101922375A (en) * 2009-06-10 2010-12-22 F.波尔希名誉工学博士公司 Cylinder block and method for the production of a cylinder block
CN103381539A (en) * 2012-05-01 2013-11-06 福特全球技术公司 Cylinder bore with selective surface treatment and method of making the same
JP2015124438A (en) * 2013-12-27 2015-07-06 トヨタ自動車株式会社 Masking for cylinder bore spray coating
WO2017029757A1 (en) * 2015-08-20 2017-02-23 日産自動車株式会社 Masking member for spraying
JP2017125487A (en) * 2016-01-15 2017-07-20 株式会社スギノマシン Surplus spray coating removal device, shield plate and shield unit
JP2018053350A (en) * 2016-09-30 2018-04-05 本田技研工業株式会社 Film forming device
US10220453B2 (en) 2015-10-30 2019-03-05 Ford Motor Company Milling tool with insert compensation
US10221806B2 (en) 2012-05-01 2019-03-05 Ford Global Technologies, Llc Cylindrical engine bore

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910577A1 (en) * 1998-12-18 2000-06-21 Volkswagen Ag Thermal coating of cavity surfaces, especially plasma spray coating of cylinder running surfaces of an i. c. engine crank-case, comprises masking surface regions not to be coated before pretreatment and-or coating
DE19910577B4 (en) * 1998-12-18 2010-09-09 Volkswagen Ag Method and arrangement for the thermal coating of surfaces of an interior, in particular of cylinder running surfaces of a cylinder crankcase of an internal combustion engine
US6589605B2 (en) * 1999-08-16 2003-07-08 Ford Global Technologies, Llc Masking for engine blocks for thermally sprayed coatings and method of masking same
KR100702075B1 (en) * 2000-05-03 2007-04-02 술처 멧코 아게 An apparatus for protecting cylinders walls of an engine block during a thermal coating operation
EP1152139A1 (en) * 2000-05-03 2001-11-07 Sulzer Metco AG Device for coating cylinder walls of engine blocks
US6572704B2 (en) 2000-05-03 2003-06-03 Sulzer Metco Ag Apparatus for protecting cylinder walls of an engine block during a thermal coatings operation
JP2006169619A (en) * 2004-12-20 2006-06-29 Nissan Motor Co Ltd Masking apparatus for thermally sprayed film
JP4649978B2 (en) * 2004-12-20 2011-03-16 日産自動車株式会社 Thermal spray coating masking equipment
US7823284B2 (en) 2005-01-28 2010-11-02 Nissan Motor Co., Ltd. Masking an engine block during coating application
US8479680B2 (en) 2005-01-28 2013-07-09 Nissan Motor Co., Ltd. Engine block coating system
JP2006291336A (en) * 2005-04-14 2006-10-26 Nissan Motor Co Ltd Thermal spray masking method for cylinder block, and thermal spray masking device therefor
JP2007239000A (en) * 2006-03-07 2007-09-20 Nissan Motor Co Ltd Masking device of sprayed coating and masking method for sprayed coating
JP2007314824A (en) * 2006-05-24 2007-12-06 Toyota Motor Corp Masking tool for thermal spraying
JP4742986B2 (en) * 2006-05-24 2011-08-10 トヨタ自動車株式会社 Masking jig for thermal spraying
JP2008025032A (en) * 2006-07-24 2008-02-07 Sulzer Metco Ag Masking system for the masking of crank chamber of internal combustion engine
EP1886737A1 (en) * 2006-07-24 2008-02-13 Sulzer Metco AG Masking system for masking a crank case in a combustion engine
US7874262B2 (en) 2006-07-24 2011-01-25 Sulzer Metco Ag Masking system for the masking of a crank chamber of an internal combustion engine
JP2008150689A (en) * 2006-12-19 2008-07-03 Nissan Motor Co Ltd Thermal spray masking member and thermal spray masking method
CN101922375A (en) * 2009-06-10 2010-12-22 F.波尔希名誉工学博士公司 Cylinder block and method for the production of a cylinder block
US8544379B2 (en) 2009-06-10 2013-10-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Cylinder block and method for the production of a cylinder block
DE102009024463B4 (en) 2009-06-10 2020-06-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method of manufacturing a cylinder block
CN103381539A (en) * 2012-05-01 2013-11-06 福特全球技术公司 Cylinder bore with selective surface treatment and method of making the same
US10221806B2 (en) 2012-05-01 2019-03-05 Ford Global Technologies, Llc Cylindrical engine bore
JP2015124438A (en) * 2013-12-27 2015-07-06 トヨタ自動車株式会社 Masking for cylinder bore spray coating
WO2017029757A1 (en) * 2015-08-20 2017-02-23 日産自動車株式会社 Masking member for spraying
US10220453B2 (en) 2015-10-30 2019-03-05 Ford Motor Company Milling tool with insert compensation
JP2017125487A (en) * 2016-01-15 2017-07-20 株式会社スギノマシン Surplus spray coating removal device, shield plate and shield unit
JP2018053350A (en) * 2016-09-30 2018-04-05 本田技研工業株式会社 Film forming device

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