JPH01100217A - Hardening agent - Google Patents
Hardening agentInfo
- Publication number
- JPH01100217A JPH01100217A JP25736387A JP25736387A JPH01100217A JP H01100217 A JPH01100217 A JP H01100217A JP 25736387 A JP25736387 A JP 25736387A JP 25736387 A JP25736387 A JP 25736387A JP H01100217 A JPH01100217 A JP H01100217A
- Authority
- JP
- Japan
- Prior art keywords
- water
- colloidal silica
- hardening agent
- agent
- hardening
- 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
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000008119 colloidal silica Substances 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 230000000171 quenching effect Effects 0.000 claims description 25
- 238000010791 quenching Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 abstract description 15
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 229910000734 martensite Inorganic materials 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 7
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920001515 polyalkylene glycol Polymers 0.000 description 3
- -1 siloxane structure Chemical group 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 2
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は焼入剤に関し、詳しくは焼入操作において蒸気
膜段階を短縮するとともに、300℃付近での冷却速度
を制御し、焼入物に充分な硬度と均一な物性を付与する
ことのできるすぐれた焼入剤に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a quenching agent, and more specifically, it shortens the steam film stage in a quenching operation, controls the cooling rate at around 300°C, and improves quenching properties. The present invention relates to an excellent hardening agent that can impart sufficient hardness and uniform physical properties to the hardening agent.
〔従来の技術及び発明が解決しようとする問題点〕一般
に、焼入剤には蒸気膜段階(処理物の表面が蒸気膜で覆
われている段階)を短縮することならびに冷却速度、特
に鋼のマルテンサイト変態開始温度である300°C付
近での冷却速度が速過ぎないことが要求されている。[Problems to be solved by the prior art and the invention] In general, quenching agents are used to shorten the steam film stage (the stage in which the surface of the workpiece is covered with a steam film) and to improve the cooling rate, especially for steel. It is required that the cooling rate around 300°C, which is the martensitic transformation start temperature, is not too fast.
従来から、水溶性焼入剤が高い安全性を有するため、広
く用いられているが、300°C付近での冷却速度が速
過ぎ、その結果として焼入物に歪みや焼割れが生ずると
いう問題がある。Water-soluble quenching agents have been widely used due to their high safety, but the problem is that the cooling rate at around 300°C is too fast, resulting in distortion and quenching cracks in the quenched product. There is.
そのため、冷却速度を適当な範囲に制御する目的で、水
に水溶性ポリマー等の高分子化合物を配合することが試
みられている。Therefore, in order to control the cooling rate within an appropriate range, attempts have been made to blend a polymer compound such as a water-soluble polymer with water.
しかしながら、高分子化合物を配合した焼入剤は、30
0°C付近での冷却速度は適度にコントロールされるが
、蒸気膜段階が長くなり、その結果、焼入物の金属に異
常組成を発生させ、また硬度不足や焼むらを起こし、実
用上満足しうるちのではない。However, the hardening agent containing a polymer compound has a
Although the cooling rate near 0°C is moderately controlled, the vapor film stage becomes longer, resulting in an abnormal composition in the metal of the quenched product, as well as insufficient hardness and uneven firing, making it unsatisfactory for practical use. Not Shiuruchino.
そこで、本発明者らは上記従来技術の問題点を解消し、
焼入操作において蒸気膜段階を短縮するとともに、30
0°C付近での冷却速度を制御できる焼入剤を開発すべ
く鋭意研究を重ねた。Therefore, the present inventors solved the problems of the above-mentioned conventional technology,
It shortens the steam film stage in the quenching operation and
We have conducted intensive research to develop a hardening agent that can control the cooling rate around 0°C.
その結果、特定の粒径を有するコロイド状シリカを用い
ることによって、上記課題を達成しうることを見出し、
本発明を完成するに至った。すなわち、本発明は水に粒
径1000mμ以下のコロイド状シリカを配合したこと
を特徴とする焼入剤を提供する(以下、第一発明という
)とともに、水に水溶性ポリマー及び粒径1000mμ
以下のコロイド状シリカを配合したことを特徴とする焼
入剤(以下、第二発明という)を提供するものである。As a result, they discovered that the above problems could be achieved by using colloidal silica having a specific particle size,
The present invention has now been completed. That is, the present invention provides a quenching agent characterized by blending colloidal silica with a particle size of 1000 mμ or less in water (hereinafter referred to as the first invention), as well as a water-soluble polymer and a particle size of 1000 mμ or less in water.
The present invention provides a hardening agent (hereinafter referred to as the second invention) characterized in that it contains the following colloidal silica.
上記第一発明では、水にコロイド状シリカを配合するが
、このコロイド状シリカは、シロキサン構造を有し、シ
リカの各粒子にそれらが互いに反発し合うのに充分な負
電荷をもたせたものである。In the first invention, colloidal silica is blended with water, but this colloidal silica has a siloxane structure, and each silica particle has a negative charge sufficient to repel each other. be.
このコロイド状シリカを製造するには、各種の方法があ
るが、最も一般的にはイオン交換樹脂を用いる方法で、
ケイ酸ナトリウム水溶液を陽イオン交換樹脂層を通して
5ioz/NazO(モル比)が60〜130のゾルを
得、これを60°C以上に加熱熟成して、10nm以下
の粒子を重合させ、密度の大きい独立分散粒子にまで成
長させ、これを新たにイオン交換樹脂層を通して得た希
薄ゾルを徐々に添加することによって、前記独立分散粒
子に表面に重合沈積させて所望のコロイド状シリカとす
ることができる。さらに、高濃度のゾルを得るには、陰
陽両イオン交換樹脂層を次々に通して高純度にすればよ
い。There are various methods to produce this colloidal silica, but the most common method is to use an ion exchange resin.
A sodium silicate aqueous solution is passed through a cation exchange resin layer to obtain a sol with a 5ioz/NazO (molar ratio) of 60 to 130, and this is heated and aged at 60°C or higher to polymerize particles of 10 nm or less and have a high density. By growing independently dispersed particles and gradually adding dilute sol obtained through a new ion exchange resin layer, the independently dispersed particles can be polymerized and deposited on the surface to form the desired colloidal silica. . Furthermore, in order to obtain a highly concentrated sol, the sol may be passed through successive layers of anionic and anionic ion exchange resins to achieve high purity.
第一発明に用いるコロイド状シリカは、粒径が1000
mμ以下のもの、好ましくは3〜100mμのものであ
る。1000mμを越えるものでは、沈殿が生じて実用
に供することができない。The colloidal silica used in the first invention has a particle size of 1000
It is less than mμ, preferably 3 to 100 mμ. If it exceeds 1000 mμ, precipitation will occur and it cannot be put to practical use.
第一発明の焼入剤において、上記コロイド状シリカの配
合量は、特に制限はないが、通常は焼入剤全量の0.0
05〜50重量%、好ましくは0.01〜10重量%の
範囲で適宜選定すればよい。In the hardening agent of the first invention, the amount of colloidal silica blended is not particularly limited, but is usually 0.0 of the total amount of the hardening agent.
The amount may be appropriately selected within the range of 0.05 to 50% by weight, preferably 0.01 to 10% by weight.
なお、第一発明の焼入剤は、水に上述したコロイド状シ
リカを配合することによって得られるが、さらに、防錆
剤、防腐剤、消泡剤、pH調整剤等の添加剤を加えるこ
ともできる。The quenching agent of the first invention can be obtained by blending the above-mentioned colloidal silica with water, but additives such as rust preventives, preservatives, antifoaming agents, and pH adjusters can also be added. You can also do it.
また、第二発明の焼入剤には、水に上記のコロイド状シ
リカとともに、水溶性ポリマーを配合する。この水溶性
ポリマーは、様々なものが使用可能であるが、一般に平
均分子1s o o o〜200000のものが好まし
い。具体的には、ポリビニルアルコール、ポリビニルピ
ロリドン、ポリイソブチレンマレイン酸のアルカリ塩(
Na塩。Further, in the quenching agent of the second invention, a water-soluble polymer is blended with water together with the above-mentioned colloidal silica. Various water-soluble polymers can be used, but those having an average molecular weight of 1 soooo to 200,000 are generally preferred. Specifically, polyvinyl alcohol, polyvinylpyrrolidone, polyisobutylene maleic acid alkali salt (
Na salt.
K塩など)、ポリアクリル酸のアルカリ塩(Na塩、に
塩など)、ポリアルキレングリコール、ポリオキシエチ
レンープロピレンボリエーテル、ポリアミドポリアルキ
レングリコール等を好適なものとして挙げることができ
る。Suitable examples include alkali salts of polyacrylic acid (Na salt, Ni salt, etc.), polyalkylene glycol, polyoxyethylene-propylene polyether, polyamide polyalkylene glycol, and the like.
この第二発明の焼入剤において、上記コロイド状シリカ
と水溶性ポリマーの配合量は、特に制限はないが、通常
は焼入剤全量に対して、コロイド状シリカを0.005
〜50重量%、好ましくは0.01〜10重量%の範囲
とし、水溶性ポリマーを0.1〜50重景%重量ましく
は0.5〜30重量%の範囲の範囲で適宜選定すればよ
い。In the hardening agent of the second invention, the amount of the colloidal silica and water-soluble polymer blended is not particularly limited, but usually 0.005% of the colloidal silica is added to the total amount of the hardening agent.
-50% by weight, preferably 0.01-10% by weight, and if the water-soluble polymer is appropriately selected in the range of 0.1-50% by weight or 0.5-30% by weight. good.
なお、第二発明の焼入剤は、水に上述した水溶性ポリマ
ーならびにコロイド状シリカを配合することによって得
られるが、さらに、防錆剤、防腐剤、消泡剤、pH調整
剤等の添加剤を加えることもできる。The quenching agent of the second invention can be obtained by blending water with the above-mentioned water-soluble polymer and colloidal silica, but it can also be obtained by adding a rust preventive agent, a preservative, an antifoaming agent, a pH adjuster, etc. Agents can also be added.
次に、本発明を実施例及び比較例により更に詳しく説明
する。Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples.
実施例1
水89.5重量%に、水溶性ポリマーとして分子量20
000のポリエチレングリコール10重量%及び粒径1
2mμのコロイド状シリカ0.5重量%を配合して焼入
剤を調製した。Example 1 A water-soluble polymer with a molecular weight of 20% was added to 89.5% by weight of water.
000 polyethylene glycol 10% by weight and particle size 1
A hardening agent was prepared by blending 0.5% by weight of colloidal silica of 2 mμ.
一方、直径10mmX長さ30mmの5US304材に
その表面から0.5mmの位置に熱電対を設置してテス
トピースを作製した。On the other hand, a test piece was prepared by installing a thermocouple at a position of 0.5 mm from the surface of a 5US304 material having a diameter of 10 mm and a length of 30 mm.
次に、このテストピースを800℃に加熱後、上記焼入
剤に投入し、その冷却状態を測定した。Next, this test piece was heated to 800° C., then placed in the above-mentioned quenching agent, and its cooling state was measured.
焼入剤の液温か40゛Cの場合のテストピースの冷却曲
線を第1図に、60°Cの場合のテストピースの冷却曲
線を第2図にそれぞれ示す。Fig. 1 shows the cooling curve of the test piece when the liquid temperature of the quenching agent is 40°C, and Fig. 2 shows the cooling curve of the test piece when the liquid temperature of the quenching agent is 60°C.
比較例1
実施例1において、焼入剤として水90重量%と分子量
20000のポリアルキレングリコール10重量%から
なるものを用いたこと以外は、実施例1と同様の操作を
行った。結果を第1図及び第2図にそれぞれ示す。Comparative Example 1 The same operation as in Example 1 was carried out, except that a quenching agent consisting of 90% by weight of water and 10% by weight of polyalkylene glycol having a molecular weight of 20,000 was used. The results are shown in FIGS. 1 and 2, respectively.
実施例1と比較例1を比べれば明らかなように、焼入剤
に粒径12mμのコロイド状シリカを添加することによ
り、処理物が蒸気膜で覆われている所謂蒸気膜段階(8
00〜450°C程度)がほとんどなくなり、しかも、
300 ’C付近での冷却速度は、実施例1と比較例1
共はぼ同程度であることがわかる。As is clear from a comparison of Example 1 and Comparative Example 1, by adding colloidal silica with a particle size of 12 mμ to the quenching agent, the so-called steam film stage (8
00 to 450°C) almost disappears, and
The cooling rate at around 300'C is the same as that of Example 1 and Comparative Example 1.
It can be seen that the two are about the same.
また、第1.2図かられかるように、焼入剤の液温を高
くすると、比較例1では蒸気膜段階の時間が長くなるが
、一方実施例1ではほとんど変わらない。Moreover, as can be seen from FIG. 1.2, when the liquid temperature of the quenching agent is increased, the time for the vapor film stage becomes longer in Comparative Example 1, but on the other hand, there is almost no difference in Example 1.
以上の如く、本発明の焼入剤を用いれば、焼入れにおけ
る蒸気膜段階を短縮することができるとともに、鋼のマ
ルテンサイト変態開始温度での冷却速度をゆっくりする
ことができる。そのため、本発明の焼入剤を用いて各種
網の焼入れを行えば、焼きムラや異常組成を生ずること
なく、充分な硬度と均一な物性を付与することができる
。As described above, by using the quenching agent of the present invention, the steam film stage in quenching can be shortened, and the cooling rate at the martensitic transformation start temperature of steel can be slowed down. Therefore, if various types of mesh are hardened using the hardening agent of the present invention, sufficient hardness and uniform physical properties can be imparted to the wire without causing uneven hardening or abnormal composition.
したがって、本発明の焼入剤は、鋼の焼入れを始めとす
る各種金属の熱処理油として有効に利用することができ
る。Therefore, the quenching agent of the present invention can be effectively used as a heat treatment oil for various metals including quenching steel.
第1図は、焼入剤温度40°Cにおける実施例及び比較
例のテストピースの冷却曲線を示し、第2図は、焼入剤
温度60°Cにおける実施例及び比較例のテストピース
の冷却曲線を示す。Figure 1 shows the cooling curves of the test pieces of the example and comparative example at a quenching agent temperature of 40°C, and Figure 2 shows the cooling curves of the test pieces of the example and comparative example at a quenching agent temperature of 60°C. Show a curve.
Claims (2)
配合したことを特徴とする焼入剤。(1) A quenching agent characterized by blending colloidal silica with a particle size of 1000 mμ or less in water.
コロイド状シリカを配合したことを特徴とする焼入剤。(2) A quenching agent characterized by blending water with a water-soluble polymer and colloidal silica with a particle size of 1000 mμ or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25736387A JP2617490B2 (en) | 1987-10-14 | 1987-10-14 | Quenching agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25736387A JP2617490B2 (en) | 1987-10-14 | 1987-10-14 | Quenching agent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01100217A true JPH01100217A (en) | 1989-04-18 |
JP2617490B2 JP2617490B2 (en) | 1997-06-04 |
Family
ID=17305342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25736387A Expired - Lifetime JP2617490B2 (en) | 1987-10-14 | 1987-10-14 | Quenching agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2617490B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1277845A1 (en) * | 2000-07-26 | 2003-01-22 | The BOC Group plc | Quenching method |
JP2007083304A (en) * | 2005-03-03 | 2007-04-05 | Sumitomo Metal Ind Ltd | Method for bending metallic material, bending apparatus, bending equipment train and bent product using the same |
JP2009062612A (en) * | 2007-09-07 | 2009-03-26 | Ind Technol Res Inst | Polymer quenching agent, its manufacturing method, and method of quenching steel material |
WO2011102523A1 (en) * | 2010-02-22 | 2011-08-25 | 出光興産株式会社 | Aqueous heat treatment liquid composition |
JP2018150621A (en) * | 2017-03-10 | 2018-09-27 | 国立大学法人電気通信大学 | Coolant |
-
1987
- 1987-10-14 JP JP25736387A patent/JP2617490B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1277845A1 (en) * | 2000-07-26 | 2003-01-22 | The BOC Group plc | Quenching method |
US6648997B2 (en) | 2000-07-26 | 2003-11-18 | The Boc Group, Plc | Quenching method |
JP2007083304A (en) * | 2005-03-03 | 2007-04-05 | Sumitomo Metal Ind Ltd | Method for bending metallic material, bending apparatus, bending equipment train and bent product using the same |
JP2009062612A (en) * | 2007-09-07 | 2009-03-26 | Ind Technol Res Inst | Polymer quenching agent, its manufacturing method, and method of quenching steel material |
WO2011102523A1 (en) * | 2010-02-22 | 2011-08-25 | 出光興産株式会社 | Aqueous heat treatment liquid composition |
US9023234B2 (en) | 2010-02-22 | 2015-05-05 | Idemitsu Kosan Co., Ltd. | Aqueous heat treatment liquid composition |
JP2018150621A (en) * | 2017-03-10 | 2018-09-27 | 国立大学法人電気通信大学 | Coolant |
Also Published As
Publication number | Publication date |
---|---|
JP2617490B2 (en) | 1997-06-04 |
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