JPH01255515A - Cylinder for molding machine - Google Patents
Cylinder for molding machineInfo
- Publication number
- JPH01255515A JPH01255515A JP63084343A JP8434388A JPH01255515A JP H01255515 A JPH01255515 A JP H01255515A JP 63084343 A JP63084343 A JP 63084343A JP 8434388 A JP8434388 A JP 8434388A JP H01255515 A JPH01255515 A JP H01255515A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- wear
- layers
- component section
- alloy
- 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
- 238000000465 moulding Methods 0.000 title claims description 4
- 238000005192 partition Methods 0.000 claims abstract description 15
- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 13
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/62—Barrels or cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はプラスチック成形機のシリンダー、バレルに関
するもので、特にシリンダー、バレルの端面の耐食性の
向上に寄与するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to cylinders and barrels for plastic molding machines, and particularly contributes to improving the corrosion resistance of the end faces of cylinders and barrels.
特開昭６０−７２６５７、特開昭６２−５４５６４にお
いて製造されたシリンダー１０は第１図に示すように本
体部材部（一般に鋳鉄）ｌ、隔壁部（一般に炭素鋼板）
３、耐摩耗部材部（一般に高クロム鋳鉄）２からなりで
いる。これらのシリンダー１０は第４図に示すように数
本のボルト５で締めつけられ℃使用される。As shown in FIG. 1, the cylinder 10 manufactured in JP-A-60-72657 and JP-A-62-54564 has a main body part (generally made of cast iron) and a partition part (generally made of carbon steel plate).
3. Consists of 2 wear-resistant parts (generally made of high chromium cast iron). These cylinders 10 are tightened with several bolts 5 as shown in FIG. 4 and are used at .degree.
プラスチック成形機運転時シリンダー１０が２５０〜３
５０℃に加熱されると外側の本体部材部１と内側の耐摩
耗部材部２との間の熱膨張の差により第５図の矢印部１
１に数μｍのすき間が発生し、このすき間より溶融プラ
スチック中に含まれる腐食性ガスにより本体部材部ｌ、
隔壁部３、耐摩耗部材部２の三層からなるシリンダー１
０の端面が腐食し、接合強度が低下し割れ１３が誘発さ
れる。Cylinder 10 is 250~3 when operating plastic molding machine
When heated to 50°C, the difference in thermal expansion between the outer body member part 1 and the inner wear-resistant member part 2 causes the arrow part 1 in FIG.
A gap of several micrometers is generated between the main body parts 1 and 1.
Cylinder 1 consisting of three layers: partition wall part 3 and wear-resistant member part 2
The end face of 0 corrodes, the joint strength decreases, and cracks 13 are induced.
又このシリンダー１０の端面に割れ１３が発生するとシ
リングー１０内の温度制御が不十分となり製造されるプ
ラスチック製品の性能を悪化する。Furthermore, if cracks 13 occur on the end face of the cylinder 10, temperature control within the cylinder 10 will become insufficient and the performance of the manufactured plastic product will deteriorate.
シリンダー１０の本体部材部ｌ、隔壁部３、耐摩耗部材
部２の三層からなるシリンダー１０の端面に発生する割
れ１３ヲ防止するには過大な負荷を与えポル）５′ｔ−
締めつけるか、あるいはボルト５の本数を増やす必要が
ある。しかし現状ではボルト５の強度、７ランジ１２の
強度から困難である。In order to prevent cracks 13 from occurring on the end surface of the cylinder 10, which is made up of three layers: the main body part 1, the partition wall part 3, and the wear-resistant member part 2, an excessive load must be applied.
It is necessary to tighten the bolts or increase the number of bolts 5. However, at present, this is difficult due to the strength of the bolt 5 and the strength of the 7-lunge 12.
又このシリンダー１０の端面は異なった材料が接合され
た面であるため残留応力が高く、腐食と応力の作用によ
り割れ１３が更に増大する危険がある。Further, since the end face of the cylinder 10 is a face where different materials are joined, the residual stress is high, and there is a risk that the cracks 13 will further increase due to corrosion and stress.
割れ１３がシリンダー１０の端面に発生するとシリンダ
ー１０内の熱伝達が悪くなり、温度制御が充分に行なわ
れず、プラスチック樹脂の焼きつき、混線が十分に行な
われずプラスチック製品の品質が劣化する。When cracks 13 occur on the end face of the cylinder 10, heat transfer within the cylinder 10 deteriorates, temperature control is not performed sufficiently, and the plastic resin is not seize up or cross-circuiting is performed sufficiently, resulting in deterioration of the quality of the plastic product.
耐食性のすぐれたＮｉ合金全シリンダ一端面に被覆する
ことにより腐食性ガスによる腐食をな（すことができシ
リンダー内の熱伝達、温度制御精度を向上させる事を目
的とする。The purpose is to prevent corrosion caused by corrosive gas by coating one end face of the entire cylinder with a Ni alloy that has excellent corrosion resistance, and to improve heat transfer and temperature control accuracy within the cylinder.
プラスチック材料或いはセラミック等の成形を行う成形
機のシリンダーであって、製作にあたりシリンダー本体
部材部と耐摩耗部材部を隔てている隔壁部の三層から成
る一体構造のシリンダーの端面に前記三層上またがるＮ
ｉ合金被覆層を設ける。A cylinder for a molding machine that molds plastic materials or ceramics, etc., which has an integral structure consisting of three layers of a partition wall separating a cylinder body member part and a wear-resistant member part. straddle N
i Provide an alloy coating layer.
本発明の実施例を第１図ないし第６図により説明すると
、第１図は本発明のシリンダー１０の一部を示し、本体
部材部１と耐摩耗部材部２及び隔壁部３の三層から形成
されている。Embodiments of the present invention will be described with reference to FIGS. 1 to 6. FIG. 1 shows a part of the cylinder 10 of the present invention, which is made up of three layers: a main body member 1, a wear-resistant member 2, and a partition wall 3. It is formed.
第２図は第１図の側面図であり、第３図はＮｉ合金層を
生成する方法を示すものであり、第４図はシリンダーの
使用例であり、第５図は従来の運転時のシリンダーの変
形現象を示すものであり、第６図は第５図の７ランジ１
２の接合部である。Fig. 2 is a side view of Fig. 1, Fig. 3 shows a method for producing a Ni alloy layer, Fig. 4 shows an example of how the cylinder is used, and Fig. 5 shows a conventional operation. Figure 6 shows the deformation phenomenon of the cylinder.
This is the joint of 2.
三層の接合層の５ち耐摩−耗部材部２と隔壁部３とは材
料組成が大きく異なり接合しても内部応力が非常に大き
くなっている。又耐摩耗部材部２と隔壁部３の二層の間
には組成のちがいによる電気化学的作用に生じ卑なる材
料部の方が溶融プラスチ〆
ツタ中に含まれる腐食性ガスにより容易に腐食する。The wear-resistant member portion 2 and the partition wall portion 3 of the three bonding layers have greatly different material compositions, and even if they are bonded together, the internal stress is extremely large. Furthermore, between the two layers of the wear-resistant member part 2 and the partition wall part 3, the material part which is more base due to electrochemical action due to the difference in composition corrodes more easily by the corrosive gas contained in the molten plastic ivy. .
この問題を解決するため第１図に示す如（隔壁部３を中
心として耐摩耗部材部２と本体部材部１にまたがり巾５
〜２０■、深さ０．１〜０．５謹の溝部４を加工し、そ
の空隙部にＮｉ合金の粉体を充てんし９５０〜１０５０
℃に加熱焼結し、Ｎｉ合金層をシリンダー１０の端面に
生成せしめることにより溶融プラスチック中に含まれる
腐食性ガスによるシリンダー１０の端面の腐食、割れ１
３を防止するものである。更に耐摩耗部材部２と隔壁部
３の二層の間の組成のちがいによる電気化学的作用もＮ
ｉ合金層の発生により減少する。このことにより割れ１
３を生じない熱効率の良いシリンダー１０ヲ焼鈍するこ
とができる。In order to solve this problem, as shown in FIG.
~20cm, a groove 4 with a depth of 0.1~0.5cm is machined, and the gap is filled with Ni alloy powder to a thickness of 950~1050.
℃ heating and sintering to form a Ni alloy layer on the end face of the cylinder 10 to prevent corrosion and cracking of the end face of the cylinder 10 due to corrosive gas contained in the molten plastic.
3. Furthermore, the electrochemical effect due to the difference in composition between the two layers of the wear-resistant member portion 2 and the partition wall portion 3 is N.
It decreases due to the formation of i-alloy layer. This causes crack 1
The cylinder 10 can be annealed with good thermal efficiency without producing 3.
以下本発明の作用を述べる。第１図に示す耐摩耗部材部
２に高クロム鋳鉄（Ｃ２，８％、Ｃｒ ２８．２５、Ｎ
ｉ Ｏ，２％、Ｍｏ ｏ、ｓ ｓ、残Ｆｅ ） ｆ、隔
壁部３に普通炭素鋼板（ＣＯ，２２％、Ｍｎ ０．５
％、ＳｉＯ，４外、残Ｆｅ ） ｆ、本体部材部１にダ
クタイル鋳鉄（Ｃ３，５％、Ｓｉ ２．７ ％、Ｃｒ
Ｏ，２％、Ｃｕ Ｏ，２％、Ｆｅ残）を用いて製造した
シリンダー１０ヲ焼鈍（８００℃、５Ｈ保持後３０℃／
Ｈで３００℃まで冷却）し、機械加工完了後、隔壁部３
を中心に巾１０ｍ＋、深さ０．３■の溝部４を設け、溝
部４にＮｉ合金（８２％、Ｓｉ ２％、２５％、残Ｎ１
）ｔ−充填し第３図に示すようにセラミックシート６を
フランジ１２の上下部に置き、鋼板７でボルト５を介し
て締めつける。上記部材を真空炉中で１０２０℃、２時
間保持後、窒素ガスで耐摩耗部材部２を焼入れした。The effects of the present invention will be described below. High chromium cast iron (C2.8%, Cr 28.25, N
i O, 2%, Mo o, s s, residual Fe) f, plain carbon steel plate (CO, 22%, Mn 0.5
%, SiO, 4, remaining Fe) f, Body member part 1 is made of ductile cast iron (C3, 5%, Si 2.7%, Cr
Cylinder 10 manufactured using O, 2%, Cu O, 2%, Fe remainder) was annealed (800°C, 30°C after 5H holding
After cooling to 300℃ with H) and completing machining, the partition wall 3
A groove 4 with a width of 10 m+ and a depth of 0.3 mm is provided around
) T-Fill the ceramic sheets 6 as shown in FIG. After holding the above member at 1020° C. for 2 hours in a vacuum furnace, the wear-resistant member portion 2 was quenched with nitrogen gas.
しかる後フランジ１２の上下面を研削し、製品とした。Thereafter, the upper and lower surfaces of the flange 12 were ground to produce a product.
上記方法で製作したシリンダー１（ＩＡＢｓ用の二軸混
練機のシリンダー１０として１年使用したが腐食、割れ
などの問題は生じなかった。Cylinder 1 manufactured by the above method (used as cylinder 10 of a twin-screw kneader for IABs for one year, but no problems such as corrosion or cracking occurred).
耐食性のすぐれたＮｉ合金被覆層をシリンダー端面に作
ることにより、腐食性ガスによる腐食に対する抵抗を著
しく向上させると共にシリンダー端面に割れの発生をな
（すことにより、シリンダー内の熱伝達、温度制御を精
度よ（行なえるようになった。By creating a Ni alloy coating layer with excellent corrosion resistance on the cylinder end face, it significantly improves the resistance to corrosion caused by corrosive gases, and also prevents cracks from forming on the cylinder end face, thereby improving heat transfer and temperature control within the cylinder. Accuracy (I can now do it.
第１図は本発明のシリンダーの一部を示すものである。
第２図は第１図の側面部である。第３図ｈｓＮｉ合金層
を生成する方法金示すものである。
第４図９工本発明のシリンダーの使用例である。
第５図は従来の運転時のシリンダーの変形現象を示すも
のである。第６図は第５図のフランジの接合部である。
ｌ・・・・・・本体部材部、 ２・・・・・・耐摩耗部
材部、３・・・・・・隔壁部、 ４・・・・・・溝部
、 ５・・・・・・ボルト、６・・・・・・セラミッ
クシート、 ７・・・・・・鋼板、１０・・・・・・
シリンダー、 １１・・・・・・すきま（矢印部ン、１
２・・・・・・フランジ、 １３・・・・・・割れ。FIG. 1 shows a portion of the cylinder of the present invention. FIG. 2 is a side view of FIG. 1. Figure 3 illustrates the method of producing the hsNi alloy layer. FIG. 4 is an example of the use of the cylinder of the present invention. FIG. 5 shows the deformation phenomenon of the cylinder during conventional operation. FIG. 6 shows the joint of the flange of FIG. l...Body member part, 2...Wear-resistant member part, 3...Partition wall part, 4...Groove part, 5...Bolt , 6...ceramic sheet, 7...steel plate, 10...
Cylinder, 11... Clearance (arrow part, 1
2...Flange, 13...Cracked.
Claims (1)
う成形機のシリンダであつて、製作にあたり、シリンダ
本体部材部と耐摩耗部材部を隔てている隔壁部の三層か
ら成る一体構造のシリンダの端面に前記三層をまたがる
Ｎｉ合金被覆層を設けた成形機用シリンダ。（２）前記
Ｎｉ合金の組成がＢ１．０〜４．０％、Ｓｉ１〜１０％
、Ｐ４〜１２％、Ｃｒ０〜２０％、Ｃ＜１％残部Ｎｉか
らなる請求項１記載の成形機用シリンダ。(1) This is a cylinder for a molding machine that molds plastic materials, ceramics, etc., and during manufacturing, the end face of the cylinder has an integral structure consisting of three layers, the partition wall separating the cylinder body member and the wear-resistant member. A cylinder for a molding machine provided with a Ni alloy coating layer spanning the three layers. (2) The composition of the Ni alloy is B1.0~4.0%, Si1~10%
, P4 to 12%, Cr 0 to 20%, C<1%, balance Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63084343A JPH01255515A (en) | 1988-04-06 | 1988-04-06 | Cylinder for molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63084343A JPH01255515A (en) | 1988-04-06 | 1988-04-06 | Cylinder for molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01255515A true JPH01255515A (en) | 1989-10-12 |
| JPH0464496B2 JPH0464496B2 (en) | 1992-10-15 |
Family
ID=13827864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63084343A Granted JPH01255515A (en) | 1988-04-06 | 1988-04-06 | Cylinder for molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01255515A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1036611A2 (en) * | 1999-02-22 | 2000-09-20 | Wall Colmonoy Corporation | Composite barrels for extrusion and injection moulding, and materials therefor |
-
1988
- 1988-04-06 JP JP63084343A patent/JPH01255515A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1036611A2 (en) * | 1999-02-22 | 2000-09-20 | Wall Colmonoy Corporation | Composite barrels for extrusion and injection moulding, and materials therefor |
| EP1036611A3 (en) * | 1999-02-22 | 2000-12-20 | Wall Colmonoy Corporation | Composite barrels for extrusion and injection moulding, and materials therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0464496B2 (en) | 1992-10-15 |
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