JPH02250949A - Carburization preventing agent and method using thereof - Google Patents
Carburization preventing agent and method using thereofInfo
- Publication number
- JPH02250949A JPH02250949A JP6932989A JP6932989A JPH02250949A JP H02250949 A JPH02250949 A JP H02250949A JP 6932989 A JP6932989 A JP 6932989A JP 6932989 A JP6932989 A JP 6932989A JP H02250949 A JPH02250949 A JP H02250949A
- Authority
- JP
- Japan
- Prior art keywords
- carburization
- carburizing
- inhibitor
- agent
- carburized
- 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 21
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 7
- 150000004645 aluminates Chemical class 0.000 claims abstract 4
- 239000003112 inhibitor Substances 0.000 claims description 37
- 230000002265 prevention Effects 0.000 claims description 8
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 5
- 235000021317 phosphate Nutrition 0.000 claims description 4
- 150000004760 silicates Chemical class 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- -1 calcium phosphate Chemical compound 0.000 abstract description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004115 Sodium Silicate Substances 0.000 abstract description 2
- 229910052910 alkali metal silicate Inorganic materials 0.000 abstract description 2
- 239000001506 calcium phosphate Substances 0.000 abstract description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 abstract description 2
- 235000011010 calcium phosphates Nutrition 0.000 abstract description 2
- 229910052911 sodium silicate Inorganic materials 0.000 abstract description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 abstract description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 3
- 239000010452 phosphate Substances 0.000 abstract 3
- 238000005255 carburizing Methods 0.000 description 33
- 150000002484 inorganic compounds Chemical class 0.000 description 16
- 229910010272 inorganic material Inorganic materials 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000001723 curing Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000008119 colloidal silica Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical group [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- ZRALSGWEFCBTJO-UHFFFAOYSA-N anhydrous guanidine Natural products NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）発明の目的
「産業上の利用分野」
本発明は、例えばはだ焼鋼のような低炭素鋼、クロム、
シリコン、モリブデン、マンガンなどを含む合金鋼など
の材料、およびこれら材料から作成された機械や構造部
品などに浸炭を行う場合に、浸炭をしたくない部分を保
護するための浸炭防止剤および浸炭防止方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (a) Purpose of the invention "Field of industrial application"
Carburizing inhibitors and carburizing prevention agents to protect parts that do not want to be carburized when carburizing materials such as alloy steel containing silicon, molybdenum, manganese, etc., and machines and structural parts made from these materials. It is about the method.
「従来の技術」
鉄鋼類から作製された機械や構造部品の鉄鋼部分の疲労
強度や面圧強度、耐摩耗性、耐蝕性、耐熱性を向上させ
ることは機械や構造物の高性能化と材料の節減にとって
きわめて重要である。そのために種々の方法が考えられ
ており、その方法のひとつとして表面硬化法が実用化さ
れている。表面硬化法に種々の方法があり、その一つに
浸炭法がある。浸炭法は炭素を高温下で鉄鋼中に侵入拡
散させるものであり、その深さ方向の炭素濃度は表面か
ら連続的に変化しているいわば理想的な複合材料である
。"Conventional technology" Improving the fatigue strength, contact pressure strength, wear resistance, corrosion resistance, and heat resistance of the steel parts of machines and structural parts made from steel is an important step in improving the performance of machines and structures and materials. This is extremely important for saving money. Various methods have been considered for this purpose, and a surface hardening method has been put into practical use as one of the methods. There are various surface hardening methods, one of which is carburizing. The carburizing method involves infiltrating and diffusing carbon into steel at high temperatures, creating an ideal composite material in which the carbon concentration in the depth direction changes continuously from the surface.
浸炭法としては浸炭性媒質により、およそ３種にわける
ことができ、固体浸炭、ガス浸炭および液体浸炭に分類
される。最近ではこの３種の他にイオン浸炭、真空浸炭
などの新しい浸炭法も開発されており、表面硬化法とし
て最も大規模に行われる表面硬化法である。Carburizing methods can be divided into approximately three types depending on the carburizing medium, and are classified into solid carburizing, gas carburizing, and liquid carburizing. In addition to these three types, new carburizing methods such as ion carburizing and vacuum carburizing have recently been developed, and these are the surface hardening methods that are most widely used.
「発明が解決しようとする課題」
浸炭により機械や構造部品全体の表面硬化を行うと、か
えって、その機械や構造部品の機能や製作上に必要な後
加工の便を損なう場合がある。"Problems to be Solved by the Invention" If the surface of the entire machine or structural part is hardened by carburizing, it may actually impair the function of the machine or structural part or the ease of post-processing necessary for manufacturing.
部品全体を浸炭処理する場合に不都合を生ずる場合とし
て２〜３の実例を示せば、次の如き場合がある。例えば
、小型のクーラー用クランクシャフトにおいて浸炭処理
によって、目的とするクランクシャフトの疲労強度や耐
摩耗性は著しく向上するが、軸端のプーリーを取り付け
るためのネジ部で破壊することがよくある。これは炭化
深さはどの部分でも一定であるが、直径の小さいネジ部
で大きくなるために逆にその部分がもろくなって、弱め
られることに起因する。The following are a few examples of cases where inconveniences may occur when carburizing the entire part. For example, carburizing a crankshaft for a small cooler can significantly improve the intended fatigue strength and wear resistance of the crankshaft, but it often breaks at the threaded part for attaching the pulley at the end of the shaft. This is due to the fact that although the depth of carbonization is constant in all parts, it becomes larger in threaded parts with a smaller diameter, making that part brittle and weakened.
段差の大きなほかの軸やビンでも同様の現象が発生する
。A similar phenomenon occurs with other shafts and bottles with large steps.
また浸炭処理後にその機械や構造部品に孔加工、キー溝
加工などの後加工を行う場合、浸炭により表面硬度が著
しく向上し作業性に支障を生ずる。Further, when post-processing such as hole drilling or keyway processing is performed on the machine or structural component after carburizing, the surface hardness increases significantly due to carburizing, which impedes workability.
このように機能上、加工上あるいは構造上、浸炭処理が
好ましくない部分の浸炭防止方法としてガス浸炭、固体
浸炭の場合は、従来よりシアン化銅液及び硫酸銅液によ
る厚メツキ処理が行われている。しかしながら、これら
メツキ法では、液体浸炭の場合、メツキの銅がＮａＣＮ
を主体とする浴中で高温塩浴中にＮａＣＮと反応してシ
アン化銅となり、皮膜が消滅し塩浴を汚染するだけで、
浸炭防止は困難であった。In the case of gas carburizing or solid carburizing, thick plating treatment with copper cyanide solution or copper sulfate solution has traditionally been used as a method of preventing carburization in areas where carburization is not desirable for functional, processing, or structural reasons. There is. However, in these plating methods, in the case of liquid carburizing, the plating copper is NaCN
It reacts with NaCN in a high-temperature salt bath in a bath mainly consisting of
It was difficult to prevent carburization.
また、被処理材表面にアルミニウムを溶射してアルミニ
ウム薄膜を溶着するアルミメタリコン法もあるが、溶射
には高価な装置と高温を必要とし、作業性、省エネルギ
ーの面で必ずしも良好な結果は得られていない。There is also the aluminum metallicon method, which deposits a thin aluminum film by thermally spraying aluminum onto the surface of the material to be treated, but thermal spraying requires expensive equipment and high temperatures, and does not necessarily produce good results in terms of workability and energy savings. Not yet.
更に、エポキシや脂肪族エステル系有機ポリマーのトル
エンなどの有機溶剤溶液を結合剤とし、珪砂、マグネシ
ア粉及びガラス粉末などを充填剤とした浸炭防止方法（
特開昭４８−１４５３７）もあるが、熱間密着性が劣り
、これもガス浸炭には有効であるものの、液体浸炭にお
いては有効でなく、また、防止剤に有機溶剤を多量に含
有するために取扱上問題があり、溶剤の蒸発による環境
汚染、引火性などの作業環境に問題を有していた。Furthermore, a carburization prevention method using epoxy or aliphatic ester organic polymer solution in an organic solvent such as toluene as a binder and fillers such as silica sand, magnesia powder, and glass powder (
There is also JP-A-48-14537), but it has poor hot adhesion, and although it is effective for gas carburizing, it is not effective for liquid carburizing, and it also contains a large amount of organic solvent as an inhibitor. There were problems in handling, environmental pollution due to evaporation of the solvent, and problems in the working environment such as flammability.
本発明者等はこのような現状に鑑み、簡便で作業性が良
く、安全性が高く、かつ、液体浸炭においても充分使用
できる確実な浸炭防止剤及び浸炭防止方法について、種
々検討した結果、本発明を完成した。In view of the current situation, the inventors of the present invention have conducted various studies on reliable carburization inhibitors and carburization prevention methods that are simple, easy to work with, highly safe, and can be used satisfactorily even in liquid carburizing, and have developed the present invention. Completed the invention.
（Ｅｌ）発明の構成
「課題を解決するための手段」
本発明は、硬化皮膜形成性無機化合物からなる浸炭防止
剤に関するものである。(El) Structure of the Invention ``Means for Solving the Problems'' The present invention relates to a carburization inhibitor comprising a hardened film-forming inorganic compound.
本発明による浸炭防止剤はメツキ法によるような複雑な
作業や繁雑な処理を必要とせずに塗料のように必要部分
に塗布して硬化させるだけで浸炭を完全に防止すること
ができる。加わるに浸炭後の防止剤、皮膜は簡単な打撃
や、ワイヤーブラシによって容易にしかも完全に除去す
ることができ、基材金属の光輝面が簡単に得られるとい
うすぐれた特徴を有する。The carburization inhibitor according to the present invention can completely prevent carburization by simply applying it to the required area like a paint and curing it, without requiring complicated operations or complicated treatments such as the plating method. In addition, the inhibitor and coating after carburization can be easily and completely removed by a simple blow or a wire brush, and has the excellent feature that a bright surface of the base metal can be easily obtained.
本発明による浸炭防止剤は、硬化皮膜形成性の無機化合
物からなる組成物であり、好ましくはその無機化合物は
自己縮合性のものであり、より好ましくは水溶性あるい
は水分散性の珪酸塩、アルミン酸塩およびリン酸塩であ
る。これらの具体例としては、例えば珪酸リチウム、珪
酸ナトリウム、珪酸カリウムなどのような水溶性アルカ
リ金属珪酸塩、コロイダルシリカ、コロイダルアルミナ
などのような水分散性シリカゾル、アルミナゾル、ある
いはリン酸アルミニウム、リン酸マグネシウム、リン酸
カルシウムなどの水溶性リン酸塩などであり、硬化前の
塗布時は液状を呈しているが、基材へ塗布後、水の蒸発
あるいは化学反応により基材表面で硬化皮膜し密着する
性質を有するものである。The carburization inhibitor according to the present invention is a composition comprising an inorganic compound capable of forming a cured film, preferably the inorganic compound is self-condensing, more preferably a water-soluble or water-dispersible silicate, aluminium, etc. It is an acid salt and a phosphate salt. Specific examples of these include water-soluble alkali metal silicates such as lithium silicate, sodium silicate, and potassium silicate; water-dispersible silica sols and alumina sols such as colloidal silica and colloidal alumina; and aluminum phosphate and phosphoric acid. Water-soluble phosphates such as magnesium and calcium phosphate, etc., which are liquid when applied before hardening, but after being applied to a substrate, they form a hardened film on the surface of the substrate due to water evaporation or chemical reaction and adhere tightly. It has the following.
これら無機化合物は各化合物の単体でも２種以上の化合
物を混合したものでも良く、また化合物のの活性を適度
に調節し、密着性の高いピンホールの少ない塗膜を得る
目的で例えば酸化亜鉛などの金属酸化物、水酸化アルミ
ニウムのような金属水酸化物、弗化カルシウム、珪弗化
ナトリウムのような弗化物、硼酸塩、リン酸塩などの化
合物と前述の無機化合物の１種又は２種以上とを一部反
応させてプレポリマー化したいわゆる変成化合物でも良
い。These inorganic compounds may be a single compound or a mixture of two or more compounds, and in order to appropriately adjust the activity of the compound and obtain a coating film with high adhesion and few pinholes, for example, zinc oxide, etc. metal oxides, metal hydroxides such as aluminum hydroxide, fluorides such as calcium fluoride and sodium silicofluoride, borates, phosphates, and one or two of the above-mentioned inorganic compounds. A so-called modified compound obtained by partially reacting the above to form a prepolymer may also be used.
更に、完全な無機化合物ではないが、その化合物の基本
骨格に炭素を含有しないで、例えば、Ｓｉ＋Ｐ、Ｓ、Ｎ
、Ｏなどの原子より成り、側鎖に炭素を含有する化合物
いわゆる無機ポリマー化合物も本発明に包含される。Furthermore, although it is not a completely inorganic compound, it does not contain carbon in the basic skeleton of the compound, for example, Si + P, S, N
, O, etc., and compounds containing carbon in their side chains, so-called inorganic polymer compounds, are also included in the present invention.
これら化合物の例としては、−３ｉ−０−の骨格を有す
るものでは、エチルシリケート、メチルシリケートなど
のアルキルシリケートおよびその部分縮合物、アンモニ
ウム珪酸塩、グアニジン珪酸塩などの有機珪酸塩、ポリ
オルガノシロキサン化合物、ポリアルキルホスファセン
化合物などの１種又は２種以上が使用される。Examples of these compounds having a -3i-0- skeleton include alkyl silicates such as ethyl silicate and methyl silicate and their partial condensates, organic silicates such as ammonium silicates and guanidine silicates, and polyorganosiloxanes. One or more of polyalkylphosphacene compounds, polyalkylphosphacene compounds, etc. are used.
本発明の浸炭防止剤においては、これら化合物単独でも
ある程度の効果を有するが、これらに無機質の骨材を配
合することによりさらにすぐれた効果が得られる。無機
骨材としては、軟化温度が１１００℃以上の耐火物粉末
、金属粉末などが主として用いられる。その形状につい
ては必ずしも限定されるものでなく球状、繊維状、鱗片
状、塊状など種々の形態のものが使用される。また無機
骨材は前記無機化合物との反応性がないか、あるいは反
応性が低いことが望ましい。なぜなら反応性の大きな骨
材を使用する場合は無機化合物との混合と同時に両者が
反応し、塗布作業に困難を生ぜしめたり、浸炭防止剤組
成物として一部として保存する際に硬化などの問題を発
生することがあるからである。しかしながら反応性の高
い骨材を基材に塗布する直前に無機化合物して使用する
方法（いわゆる−液一粉混合型など）も場合によっては
有効な事がある。無機骨材の粒子径及び粒度分布も特に
制限されるものではないが、ｏ、ｏｏｔμ−からＩＩＩ
ＩＩＩ＋の範囲のものを使用することが好ましく、更に
好ましくは０．１μｍから１００μ−の範囲に重量平均
粒度を有する骨材が良（それによって良好な結果が得ら
れる。但し、繊維状、針状の骨材においてはその長さが
この範囲を越えても問題なく用いられる。粒度分布はア
ンドレアゼンの最密充填粒度曲線をとることが最も好ま
しいが、アンドレアゼンの最密充填粒度式におけるｑが
０．２〜１の範囲のものが良好な結果が得られる。In the carburization inhibitor of the present invention, these compounds alone have some effect, but even better effects can be obtained by blending them with inorganic aggregate. As the inorganic aggregate, refractory powders, metal powders, etc. having a softening temperature of 1100° C. or higher are mainly used. The shape thereof is not necessarily limited, and various shapes such as spherical, fibrous, scaly, and lumpy shapes can be used. Further, it is desirable that the inorganic aggregate has no reactivity or low reactivity with the inorganic compound. This is because when highly reactive aggregates are used, both react with the inorganic compound at the same time as they are mixed, causing difficulties in coating work and problems such as hardening when stored as part of the carburization inhibitor composition. This is because it may occur. However, a method of using an inorganic compound immediately before applying a highly reactive aggregate to a base material (so-called liquid-powder mixing type, etc.) may also be effective in some cases. The particle size and particle size distribution of the inorganic aggregate are not particularly limited, but may range from o, ootμ- to III
It is preferable to use aggregates in the range III+, more preferably aggregates having a weight average particle size in the range 0.1 μm to 100 μ− (which gives good results). It can be used without any problem even if the length exceeds this range for aggregates of Good results can be obtained in the range of 0.2 to 1.
無機骨材の具体的な化合物としては例えば、アルミナ、
シリカ、ムライト、ジルコニア、チタニア、マグネシア
などの酸化物、窒化珪素、窒化硼素、窒化アルミニウム
のような窒化物、炭化珪素、炭化硼素のような炭化物、
珪砂、珪石粉末、カオリンなどの天然鉱物、あるいはガ
ラス粉末、金属粉末などの１種又は２種以上が使用され
る。Specific compounds of inorganic aggregate include alumina,
Oxides such as silica, mullite, zirconia, titania, and magnesia; nitrides such as silicon nitride, boron nitride, and aluminum nitride; carbides such as silicon carbide and boron carbide;
One or more of natural minerals such as silica sand, silica stone powder, and kaolin, glass powder, and metal powder are used.
無機化合物と骨材の配合割合は骨材１００重量部に対し
、好ましくは無機化合物１〜１００００重量部、より好
ましくは１０〜１０００重量部である。無機化合物の配
合割合がこの範囲より小さい場合は浸炭防止剤がスラリ
ー状あるいはペースト状にならず、塗布の際の基材への
ぬれを阻害する。逆に大きな場合は骨材の効果が期待で
きなくなり、防止剤を塗布した場合、発泡、ピンホール
、クラック等が生じ完全な浸炭防止が期待できない。The mixing ratio of the inorganic compound and the aggregate is preferably 1 to 10,000 parts by weight, more preferably 10 to 1,000 parts by weight, per 100 parts by weight of the aggregate. If the blending ratio of the inorganic compound is smaller than this range, the carburization inhibitor will not form into a slurry or paste form, which will inhibit wetting of the base material during application. On the other hand, if it is too large, the effectiveness of the aggregate cannot be expected, and when an inhibitor is applied, foaming, pinholes, cracks, etc. occur, and complete carburization prevention cannot be expected.
これらの他に本発明の浸炭防止剤には沈降防止剤、界面
活性剤、顔料、無機繊維、粘度調整剤、溶剤、効果剤な
どが必要に応じ適宜組み合わせて配合することもできる
。In addition to these, antisettling agents, surfactants, pigments, inorganic fibers, viscosity modifiers, solvents, effect agents, and the like can be blended in appropriate combinations as necessary in the carburization inhibitor of the present invention.
本発明の浸炭防止剤は、種々の形態で使用可能いあるが
、通常スラリー状、サスペンション状、ペースト状など
の形態が塗布作業に適するので好ましい。それらの粘度
は、塗布方法によっても異なるが、２５°Ｃにおいて回
転粘度計で５０〜５０００００ｃｐｓ程度が良いが、ス
プレーなどの場合においては、低粘度側のものが、刷毛
塗り、ディッピングなどの場合はやや高い粘度のものが
塗布作業性においてすぐれている。The carburization inhibitor of the present invention can be used in various forms, but forms such as slurry, suspension, and paste are generally preferred because they are suitable for coating work. The viscosity of these materials varies depending on the application method, but a good value is about 50 to 500,000 cps using a rotational viscometer at 25°C. Those with a slightly higher viscosity are superior in coating workability.
かかる浸炭防止剤となりうる物として具体的には東亜合
成化学工業■から市販されている「アロンセラミック」
（登録商標）がある。Specifically, "Aron Ceramic" commercially available from Toagosei Chemical Co., Ltd. is a product that can serve as such a carburization inhibitor.
(registered trademark).
浸炭処理を適用できる鉄鋼類としては前述したが低炭素
鋼や浸炭を効率的に行うためのクロム、シリコン、モリ
ブデン、マンガンなどを含む合金鋼あるいは一般圧延用
炭素鋼、機械構造用炭素鋼・であ５す、その線膨張率は
概して（９〜１Ｂ）Ｘｉ０−”ｃｍ／ｃｍ”ｃ程度であ
ることから、本発明に使用することのできる浸炭防止剤
も硬化後の線膨張率が（１〜３０） Ｘ １０−’Ｃ１
ｌ／Ｃｌ１ｌ″Ｃの範囲にあるものが良好な結果が得ら
れ、更に好ましくは２５〜１１００℃の熱膨張が一定で
あり、かつその平均線膨張率が（４〜２３ ） Ｘ １
０−’ｃｍ／ｃｍ”ｃの範囲の浸炭防止剤がより良好な
結果をもたらす。特に好ましくは基材との２５〜１１０
０℃における平均線膨張率の差が（０，５〜５ ） Ｘ
１０−’ＣＩｌ／Ｃ１１’Ｃの範囲に入ることが良好
な浸炭防止効果と浸炭処理後の防止剤の除去に最も効果
的である。As mentioned above, steels to which carburizing can be applied include low carbon steel, alloy steel containing chromium, silicon, molybdenum, manganese, etc. for efficient carburizing, carbon steel for general rolling, and carbon steel for machine structures. A5. Since its linear expansion coefficient is generally about (9-1B)Xi0-"cm/cm"c, the carburization inhibitor that can be used in the present invention also has a linear expansion coefficient of (1B) after curing. ~30) X 10-'C1
Good results can be obtained by using l/Cl1l''C, and more preferably, the thermal expansion is constant at 25 to 1100°C, and the average coefficient of linear expansion is (4 to 23) x 1
Carburization inhibitors in the range 0-'cm/cm''c give better results. Particularly preferred are the carburization inhibitors in the range 25-110
The difference in average linear expansion coefficient at 0°C is (0,5~5)
A range of 10-'CIl/C11'C is most effective in preventing carburization and removing the inhibitor after carburization.
Ｏ使用方法
本発明の防止剤は、浸炭処理する部品の処理を施したく
ない部分に、この盪炭防止剤をハケ、ヘラ、スプレーあ
るいは各種コーターを用いて塗布される。基材に油、錆
、防錆剤、はこりなどが付着している場合は密着性が低
下するので事前に簡単なサンディングや脱脂を行うこと
が望ましい。How to Use The carburizing inhibitor of the present invention is applied to the parts of the part to be carburized that are not desired to be carburized using a brush, spatula, spray, or various coaters. If the base material is contaminated with oil, rust, anti-corrosion agents, flakes, etc., adhesion will decrease, so it is desirable to perform simple sanding or degreasing beforehand.
続いて浸炭防止剤が良好な塗膜を形成することが可能な
条件で硬化させる。無機化合物の種類、硬化剤の使用の
有無により硬化条件は異なるが、通常室温または３００
’Ｃ以下での加熱が一般的であり、８０°Ｃ程度の加
熱で充分な場合がほとんどである。また、塗布後室塩で
数時間放置後浸炭槽中での昇温により加熱硬化させるこ
とも可能である。Subsequently, the carburization inhibitor is cured under conditions that allow it to form a good coating film. Curing conditions vary depending on the type of inorganic compound and whether or not a curing agent is used, but are usually room temperature or 300℃.
Heating is generally done at temperatures below 80°C, and in most cases heating at about 80°C is sufficient. Furthermore, after coating, it is possible to leave the coating in room salt for several hours and then heat and harden it by raising the temperature in a carburizing tank.
加熱硬化の場合、無機化合物の種類によっては急激な加
熱により発泡することもあるので、そのような場合は徐
々に昇温しで硬化することが望ましい。In the case of heat curing, rapid heating may cause foaming depending on the type of inorganic compound, so in such cases it is desirable to gradually raise the temperature to cure the inorganic compound.
「作用」
本発明の浸炭防止剤を部品の機能上浸炭処理してはなら
ない部分、あるいは浸炭後の溶接、機械加工、その他の
二次加工（後加工）などが必要な部分に塗布した後、そ
れらの部品の浸炭処理を行うと、浸炭防止剤の塗布され
た部分には浸炭処理が施されないという優れた作用が奏
せられる。"Operation" After applying the carburization inhibitor of the present invention to parts of parts that should not be carburized due to their functionality, or parts that require welding, machining, or other secondary processing (post-processing) after carburization, When these parts are carburized, the excellent effect is that the carburizing process is not applied to the parts coated with the carburizing inhibitor.
「実施例」
実施例１及び２
炭素１ｉ１ （ＳＳ３４） （７）丸棒（１０ｍｍΦＸ
ＬＯＯｍａｄ）の試料をトリクロルエチレンで蒸気洗浄
後、「アロンセラミック高粘度Ｃｌ （東亜合成化学
工業■製、主成分ニジリカ系無機化合物／変性水溶性珪
酸塩、固形分７３重量％、２５°Ｃにおける粘度１００
００００ｃｐｓ 、２５〜６００’Ｃの平均線膨張率１
３ Ｘ １０−’ｃｍ／ｃｍ’ｃ ）及びコロイダルシ
リカ系無機接着剤（主成分ニジリカ系゛無機化合物／コ
ロイダルシリカ、固形分８５重量％、２５°Ｃにおける
粘度８０００ｃｐｓ 、２５〜６００°Ｃの平均線膨張
率１３ Ｘ １０−’ｃｍ／ｃｍ″Ｃ）を試料の１／２
に刷毛塗りした。室温で約３０分放置後、ｌ″Ｃ／ｍｉ
ｎの昇温速度で１５０°Ｃまで加熱し、更に１５０°Ｃ
で１時間加熱硬化させた。浸炭防止剤中の溶媒である水
分は蒸発除去し、更に、１５０°Ｃの加熱による縮合反
応により均一な無機硬化皮膜が得られた。硬化後の膜厚
は約３００μｍおよび１００μｍであった。"Example" Examples 1 and 2 Carbon 1i1 (SS34) (7) Round bar (10mmΦX
After steam cleaning a sample of LOOmad) with trichlorethylene, a sample of ``Aron Ceramic High Viscosity Cl (manufactured by Toagosei Kagaku Kogyo ■, main component Nijilica-based inorganic compound/modified water-soluble silicate, solid content 73% by weight, viscosity at 25°C 100
0000cps, average linear expansion coefficient from 25 to 600'C 1
3 x 10-'cm/cm'c) and colloidal silica-based inorganic adhesive (main component Nisilica-based inorganic compound/colloidal silica, solid content 85% by weight, viscosity at 25°C 8000 cps, average from 25 to 600°C Linear expansion coefficient 13 x 10-'cm/cm''
I painted it with a brush. After leaving it at room temperature for about 30 minutes, l″C/mi
Heating to 150°C at a heating rate of n, then further heating to 150°C
It was heated and cured for 1 hour. Water, which was a solvent in the carburization inhibitor, was removed by evaporation, and a uniform inorganic cured film was obtained by a condensation reaction by heating at 150°C. The film thicknesses after curing were approximately 300 μm and 100 μm.
ガス浸炭槽中に試料を入れて浸炭を行った。ガス組成は
メタノール、イソプロパツールの混合ガスを用い、９０
０℃までの昇温３０分、９００″Ｃで３時間浸炭し、更
に４時間を要して拡散を行い８３０°Ｃで３０分保持し
たのち油冷した。The sample was placed in a gas carburizing tank and carburized. The gas composition uses a mixed gas of methanol and isopropanol, and the gas composition is 90%
The temperature was raised to 0°C for 30 minutes, carburizing was carried out at 900″C for 3 hours, diffusion was performed for another 4 hours, and the product was held at 830°C for 30 minutes, and then cooled in oil.
浸炭防止剤は油冷により容易に除去できた。図−１に実
施例１及び２の浸炭防止剤を塗布した部分と塗布しなか
った部分の表面から深さ方向におけるマイクロビッカー
ス硬さ分布を示す。The carburization inhibitor could be easily removed by oil cooling. Figure 1 shows the micro-Vickers hardness distribution in the depth direction from the surface of the parts coated with the carburization inhibitor of Examples 1 and 2 and the parts not coated.
浸炭防止剤を塗布しなかった部分はＨｖ８９０と極めて
高強度であるのに対し、実施例１の浸炭防止剤塗布部は
Ｈｖ３４５、実施例２の浸炭防止剤塗布部はＨｖ３７５
であり浸炭防止効果は顕著である。The part to which the carburization inhibitor was not applied had an extremely high strength of Hv890, whereas the part coated with the carburization inhibitor of Example 1 had a strength of Hv345, and the part coated with the carburization inhibitor of Example 2 had a strength of Hv375.
Therefore, the carburization prevention effect is remarkable.
（ハ）発明の効果
本発明の浸炭防止剤により簡便にかつ安価なコストで浸
炭防止が可能になる。部品の機能上浸炭処理してはなら
ない部分、あるいは浸炭後の溶接、機械加工、その他の
二次加工（後加工）などのために必要な部分を本発明の
浸炭防止剤を用いて浸炭防止処置することにより、浸炭
処理の効果的な応用の拡大と機械、構造物の性能や信頼
性が大幅に高められる。(c) Effects of the Invention The carburization inhibitor of the present invention allows carburization to be prevented simply and at low cost. Carburization prevention treatment is performed using the carburization inhibitor of the present invention on parts that should not be carburized due to the functionality of the part, or on parts that are necessary for welding, machining, and other secondary processing (post-processing) after carburization. By doing so, the effective application of carburizing treatment will be expanded and the performance and reliability of machines and structures will be greatly improved.
第１図は、実施例１及び２における浸炭防止剤の効果を
示す図で、浸炭防止剤を塗布した部分と塗布しなかった
部分の表面から深さ方向におけるマイクロビッカース硬
さ分布を示すもので、■は浸炭防止剤を塗布しなかった
部分、■は実施例１の浸炭防止剤塗布部分、■は実施例
２の浸炭防止剤塗布部分の表面から深さ方向におけるマ
イクロビッカース硬さを示すものである。FIG. 1 is a diagram showing the effect of the carburization inhibitor in Examples 1 and 2, and shows the micro-Vickers hardness distribution in the depth direction from the surface of the part where the carburization inhibitor was applied and the part where it was not applied. , ■ indicates the part where the carburization inhibitor was not applied, ■ indicates the area where the carburization inhibitor was applied in Example 1, and ■ indicates the micro Vickers hardness in the depth direction from the surface of the area where the carburization inhibitor was applied in Example 2. It is.
Claims (1)
リン酸塩の一種又は二種以上からなることを特徴とする
浸炭防止剤。 ２、浸炭処理を施す部品の浸炭処理を施したくない部分
に硬化皮膜形成能を有する珪酸塩、アルミン酸塩又はリ
ン酸塩の一種又は二種以上からなることを特徴とする浸
炭防止剤の皮膜を形成して浸炭を防止することを特徴と
する浸炭防止方法。[Scope of Claims] 1. A carburization inhibitor comprising one or more of silicates, aluminates, or phosphates having the ability to form a hardened film. 2. A carburization inhibitor film comprising one or more silicates, aluminates, or phosphates that has the ability to form a hardened film on parts of the part to be carburized that are not desired to be carburized. A carburization prevention method characterized by forming a carburization prevention method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6932989A JPH02250949A (en) | 1989-03-23 | 1989-03-23 | Carburization preventing agent and method using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6932989A JPH02250949A (en) | 1989-03-23 | 1989-03-23 | Carburization preventing agent and method using thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02250949A true JPH02250949A (en) | 1990-10-08 |
Family
ID=13399402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6932989A Pending JPH02250949A (en) | 1989-03-23 | 1989-03-23 | Carburization preventing agent and method using thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02250949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327107A (en) * | 2006-06-08 | 2007-12-20 | Petroleum Energy Center | Metallic structure having coating of rust-preventive agent and method for producing the metallic structure |
| JP2019035111A (en) * | 2017-08-16 | 2019-03-07 | パーカー熱処理工業株式会社 | Steel member and method for producing the same |
-
1989
- 1989-03-23 JP JP6932989A patent/JPH02250949A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327107A (en) * | 2006-06-08 | 2007-12-20 | Petroleum Energy Center | Metallic structure having coating of rust-preventive agent and method for producing the metallic structure |
| JP2019035111A (en) * | 2017-08-16 | 2019-03-07 | パーカー熱処理工業株式会社 | Steel member and method for producing the same |
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