JP2012026945A - Method and device for atmospheric corrosion test of metal material for home electrical appliance - Google Patents

Method and device for atmospheric corrosion test of metal material for home electrical appliance Download PDF

Info

Publication number
JP2012026945A
JP2012026945A JP2010167686A JP2010167686A JP2012026945A JP 2012026945 A JP2012026945 A JP 2012026945A JP 2010167686 A JP2010167686 A JP 2010167686A JP 2010167686 A JP2010167686 A JP 2010167686A JP 2012026945 A JP2012026945 A JP 2012026945A
Authority
JP
Japan
Prior art keywords
salt
temperature
atmospheric corrosion
test method
corrosion test
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
JP2010167686A
Other languages
Japanese (ja)
Inventor
Katsuto Takahashi
克仁 高橋
Kazumi Fujii
和美 藤井
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2010167686A priority Critical patent/JP2012026945A/en
Publication of JP2012026945A publication Critical patent/JP2012026945A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an atmospheric corrosion test method for home electrical appliances, which is capable of reproducing corrosion due to coming and deposition of sea salt particles having a particle size of several tens of micrometers in a natural environment.SOLUTION: In an atmospheric corrosion test method, salt is deposited on an object to be tested, by spraying salt water in a space held under one condition set within a range of temperature of 0 to 60°C and relative humidity of 10 to 98%.

Description

本発明は、ＯＡ機器（複写機，パソコン等），ＡＶ機器（テレビ，ビデオ等），冷蔵庫，洗濯機等の家電や、家電用電気・電子部品に使用される金属材料の腐食試験方法およびその装置に関する。   The present invention relates to a corrosion test method for metal materials used for home appliances such as OA equipment (copiers, personal computers, etc.), AV equipment (TVs, videos, etc.), refrigerators, washing machines, etc. Relates to the device.

大気腐食の従来試験方法としては、ＪＩＳ Ｚ ２３７１で規定されている塩水噴霧試験方法やＪＩＳＫ ５６００−７−９で規定されているサイクル腐食試験方法が知られている。   As a conventional test method for atmospheric corrosion, a salt spray test method defined in JIS Z 2371 and a cyclic corrosion test method defined in JIS K 5600-7-9 are known.

また、被試験体に付着させる塩分量や温湿度の試験条件を適正化して、被試験体の実際に曝される腐食環境を模擬した試験方法が特許文献１により記載されている。特許文献１の試験方法では、被試験体に所定量の塩付着を行う工程と、塩付着後に所定の温度、相対湿度および時間条件の乾燥状態と湿潤状態を繰り返す乾湿繰り返し工程とを繰り返す試験方法が記載されている。   Further, Patent Document 1 describes a test method that simulates a corrosive environment in which a test object is actually exposed by optimizing the test conditions for the amount of salt and temperature and humidity attached to the test object. In the test method of Patent Document 1, a test method that repeats a step of attaching a predetermined amount of salt to an object to be tested and a wet and dry repeating step of repeating a dry state and a wet state at a predetermined temperature, relative humidity, and time after the salt is attached. Is described.

上記の試験方法では、被試験体に塩分を付着させるのに、腐食を促進させる化学物質として所定の濃度に調整された塩水を用い、この塩水を霧状に噴霧する方法を採用している。   The above test method employs a method of using salt water adjusted to a predetermined concentration as a chemical substance that promotes corrosion and spraying this salt water in a mist form to attach salt to the test object.

特許文献２では、海水中でエアーバブルを発生させることにより、細かい海塩粒子を生成する方法が記載されている。   Patent Document 2 describes a method of generating fine sea salt particles by generating air bubbles in sea water.

特許文献１の様に試験条件を適正化した結果、従来試験方法と比較して、実際の使用環境での耐食性評価を大幅に改善できるようになった。   As a result of optimizing the test conditions as in Patent Document 1, the corrosion resistance evaluation in the actual use environment can be greatly improved as compared with the conventional test method.

一方、霧状に噴霧された塩水が試験体に付着すると、噴霧された液滴が凝集して表面でぬれた状態になり、自然環境で飛来する海塩粒子のサイズが数１０μｍ程度であるのと大きく異なる。上記の塩水を単に噴霧して被試験体に付着させる塩付着では、自然環境で飛来する塩粒子の付着による腐食を完全には再現できない課題がある。   On the other hand, when salt water sprayed in the form of mist adheres to the specimen, the sprayed droplets aggregate and become wet on the surface, and the size of sea salt particles flying in the natural environment is about several tens of μm. And very different. In the case of salt adhesion in which the above-mentioned salt water is simply sprayed and adhered to the object to be tested, there is a problem that corrosion due to adhesion of salt particles flying in the natural environment cannot be completely reproduced.

また、特許文献２の様な、海水中でのエアーバブルの発生による塩付着方法では塩付着の速度が小さく、塩付着を行いながら腐食を進行させる試験法には好適であるかもしれないが、特許文献１の様な、腐食を進行させる乾湿繰り返し工程と、塩付着を行う工程とを分離している試験方法において、塩付着に時間を要してしまい、塩付着工程の際に腐食を進行させてしまう課題がある。   Moreover, in the salt adhesion method by generation | occurrence | production of the air bubble in seawater like patent document 2, the speed | rate of salt adhesion is small, and it may be suitable for the test method which advances corrosion, performing salt adhesion, In the test method that separates the wet and dry repetitive process for advancing corrosion and the process for depositing salt as in Patent Document 1, it takes time to deposit the salt, and the corrosion proceeds during the salt deposition process. There is a problem that will let you.

特許第４２１８２８０号公報Japanese Patent No. 4218280 特許第３８３４６３０号公報Japanese Patent No. 3834630

そこで、本発明の目的は、自然環境での数十μｍの海塩粒子が飛来して付着することにより起こる腐食を再現可能な家電用金属材料の大気腐食試験方法を提供することにある。   Therefore, an object of the present invention is to provide an atmospheric corrosion test method for metal materials for home appliances capable of reproducing corrosion caused by flying and adhering tens of μm sea salt particles in a natural environment.

すなわち、本発明は、下記（Ａ）工程の後に（Ｂ）工程を繰り返し行う家電用金属材料の大気腐食試験方法であって、
被試験体への塩分の付着は、温度０〜６０℃、相対湿度１０〜９８％の範囲から設定した１つの条件に保持された空間での塩水噴霧により行うことを特徴としている。
（Ａ）被試験体の表面に塩化物イオンを含む塩分を７日間に１回乃至１日間に１回付着させる工程。
（Ｂ）被試験体に温度と相対湿度をステップ状に変化させて設定した、乾燥工程を先に行い、その後に湿潤工程を行うことを１サイクルとする工程であって、このサイクルを複数回行う工程。 That is, the present invention is an atmospheric corrosion test method for metal materials for home appliances in which the step (B) is repeated after the step (A) below,
Adhesion of salt to the object to be tested is performed by spraying salt water in a space maintained under one condition set from a temperature range of 0 to 60 ° C. and a relative humidity of 10 to 98%.
(A) A step of attaching a salt containing chloride ions to the surface of a test object once every seven days to once every day.
(B) A process in which the temperature and relative humidity are set to be changed in a stepwise manner on the DUT, the drying process is performed first, and then the wetting process is performed as one cycle, and this cycle is repeated a plurality of times. The process to perform.

本発明によれば、自然環境での数十μｍの海塩粒子が飛来して付着することにより起こる腐食を再現できる。   According to the present invention, it is possible to reproduce corrosion caused by flying and adhering tens of μm of sea salt particles in a natural environment.

本発明の大気腐食試験方法の一連の工程を自動で実施する装置の構成を示す図。The figure which shows the structure of the apparatus which automatically implements a series of processes of the atmospheric corrosion test method of this invention. 本発明の大気腐食試験方法の手順を示す図。The figure which shows the procedure of the atmospheric corrosion test method of this invention. 本発明の大気腐食試験方法を半自動で実施する装置の構成を示す図。The figure which shows the structure of the apparatus which implements the atmospheric corrosion test method of this invention semiautomatically.

以下、本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail.

本発明者らは、塩付着する際の温度および相対湿度を管理することにより、付着塩分粒子の大きさを制御できることを見出した。付着塩分粒子の大きさを選定して大気腐食試験を行うことにより、実環境での腐食を忠実に再現できるようになった。   The present inventors have found that the size of the adhered salt particles can be controlled by controlling the temperature and relative humidity at the time of salt deposition. Corrosion in the actual environment can be faithfully reproduced by selecting the size of the adhered salt particles and conducting an atmospheric corrosion test.

本実施例では、本発明の大気腐食試験方法の一連の工程を自動で実施する装置および方法について説明する。   In this example, an apparatus and method for automatically performing a series of steps of the atmospheric corrosion test method of the present invention will be described.

図１は、本発明の大気腐食試験方法の一連の工程を自動で実施する装置の構成を示す図である。本発明の大気腐食試験方法を実施する装置１は、恒温恒湿槽１１０と、塩霧発生装置１２０と、排気装置１３０との組み合わせから構成される。また、恒温恒湿槽１１０の内部には洗浄装置１４０と温風乾燥装置１５０を設けている。また、図１は、恒温恒湿槽１１０の内部に被試験体１６０を設置した状態を示している。   FIG. 1 is a diagram showing a configuration of an apparatus for automatically performing a series of steps of an atmospheric corrosion test method of the present invention. The apparatus 1 for carrying out the atmospheric corrosion test method of the present invention is composed of a combination of a thermo-hygrostat 110, a salt fog generator 120, and an exhaust device 130. In addition, a cleaning device 140 and a warm air drying device 150 are provided inside the constant temperature and humidity chamber 110. FIG. 1 shows a state in which a device under test 160 is installed inside a constant temperature and humidity chamber 110.

恒温恒湿槽１１０は、恒温恒湿槽内の空間の温度と湿度を制御する。使用した恒温恒湿槽１１０は、恒温恒湿槽内の温度と湿度を独立に制御でき、かつ、温度と湿度を組み合わせた複数の条件を連続的に変化させるプログラム機能を有する。また、外気を導入しながら温度と湿度を制御できる機能を有する。塩霧発生装置１２０は、被試験体１６０に塩分を付着させるための塩水の霧を発生させる。本実施例では、塩水として、濃度３.５％の海水を用いた。排気装置１３０は、恒温恒湿槽１１０内の塩水の霧を除去する。本実施例の排気装置１３０には、除去した塩水の霧から塩水のみを回収し、空気のみを外部に排出するものを使用した。洗浄装置１４０は、洗浄水を被試験体１６０に散布し、被試験体１６０に付着した塩分を除去する。洗浄水として、純水を使用した。温風乾燥装置１５０は、被試験体１６０に温風を吹き付け、残留した洗浄水を除去する。被試験体１６０は、耐食性を評価する材料で、評価面を上向きにして設置する。本実施例では、形状が７０×７０×１mmの亜鉛めっき鋼板を用いた。   The constant temperature and humidity chamber 110 controls the temperature and humidity of the space in the constant temperature and humidity chamber. The used temperature and humidity chamber 110 can independently control the temperature and humidity in the temperature and humidity chamber, and has a program function for continuously changing a plurality of conditions combining temperature and humidity. In addition, it has a function of controlling temperature and humidity while introducing outside air. The salt mist generating device 120 generates a mist of salt water for attaching salt to the DUT 160. In this example, seawater having a concentration of 3.5% was used as the salt water. The exhaust device 130 removes salt water mist in the constant temperature and humidity chamber 110. As the exhaust device 130 of this embodiment, an exhaust device that collects only salt water from the removed salt water mist and discharges only air to the outside is used. The cleaning device 140 sprays cleaning water on the device under test 160 to remove the salt attached to the device under test 160. Pure water was used as the washing water. The hot air drying device 150 blows hot air on the device under test 160 to remove the remaining cleaning water. The DUT 160 is a material for evaluating corrosion resistance, and is installed with the evaluation surface facing upward. In this example, a galvanized steel sheet having a shape of 70 × 70 × 1 mm was used.

図２は、本発明の大気腐食試験方法の手順を示す図である。本発明の大気腐食試験方法の手順は、塩分付着工程２１０と、乾湿繰り返し工程２２０と、洗浄工程２３０から構成される。さらに、塩分付着工程２１０は、噴霧準備２１１と噴霧２１２から構成され、乾湿繰り返し工程２２０は、乾燥工程２２１と湿潤工程２２２から構成される。   FIG. 2 is a diagram showing the procedure of the atmospheric corrosion test method of the present invention. The procedure of the atmospheric corrosion test method of the present invention includes a salt adhesion process 210, a wet and dry repetition process 220, and a cleaning process 230. Further, the salt adhesion process 210 includes a spray preparation 211 and a spray 212, and the dry / wet repetition process 220 includes a dry process 221 and a wet process 222.

本発明の大気腐食試験方法では、乾湿繰り返し工程２２０を所定のサイクル繰り返し、その中で、塩分付着工程２１０と洗浄工程２３０を行う。本実施例では、乾湿繰り返し工程を４週間繰り返し、週２回の頻度で塩分付着工程２１０と洗浄工程２３０を行った。   In the atmospheric corrosion test method of the present invention, the dry / wet repeating step 220 is repeated for a predetermined cycle, in which the salt adhesion step 210 and the cleaning step 230 are performed. In this example, the wet and dry repeating process was repeated for 4 weeks, and the salt adhesion process 210 and the cleaning process 230 were performed twice a week.

噴霧準備２１１では恒温恒湿槽１１０を稼働させて恒温恒湿槽１１０内の温湿度を一定にした。本実施例では、温湿度を温度が４０℃±１℃、相対湿度が３５％ＲＨ±３％とした。事前検討により、稼働開始から２０minほどで温湿度が一定になったため、余裕をみて、それよりも長い３０min以上稼働させた。   In the spray preparation 211, the constant temperature and humidity chamber 110 was operated, and the temperature and humidity in the constant temperature and humidity chamber 110 were made constant. In this example, the temperature and humidity were 40 ° C. ± 1 ° C. and the relative humidity was 35% RH ± 3%. As a result of preliminary examination, the temperature and humidity became constant after about 20 minutes from the start of operation. Therefore, the operation was performed for more than 30 minutes longer than that.

噴霧２１２では、塩霧発生装置１２０により、塩水の霧を発生させて被試験体１６０に塩分を付着させた。事前検討により、付着塩分量は噴霧時間に比例して大きくなることが判っており、本実施例では噴霧時間を、１ｍ2当たり１ｇの塩分を試験片に付着させることのできる１２minとした。噴霧２１２の直後は、恒温恒湿槽１１０内に塩水の霧が残留していて、被試験体１６０に付着し続ける。残留した塩水の霧の付着は、付着塩分量のばらつきの原因となるので、噴霧２１２の後は速やかに排気装置１３０を稼働し、恒温恒湿槽１１０内に残留した塩水の霧を除去した。ここで、サンプルとして、被試験体１６０の１つを回収し、付着した塩分の粒子を観察した。塩分の粒子の大きさは、平均で２５μｍであった。 In the spray 212, salt water mist was generated by the salt mist generator 120 to cause salt to adhere to the device under test 160. According to a preliminary study, it has been found that the amount of adhering salt increases in proportion to the spraying time. In this example, the spraying time was set to 12 min, which allows 1 g of salt per 1 m 2 to adhere to the test piece. Immediately after the spray 212, salt water mist remains in the constant temperature and humidity chamber 110 and continues to adhere to the DUT 160. Adherence of the remaining salt water mist causes variations in the amount of adhering salt. Therefore, the exhaust device 130 was immediately operated after the spray 212 to remove the salt water mist remaining in the constant temperature and humidity chamber 110. Here, as a sample, one of the test objects 160 was collected, and adhered salt particles were observed. The average particle size of the salinity was 25 μm.

続いて、乾湿繰り返し工程２２０は、塩分を付着させた被試験体１６０に対して、乾燥工程２２１と、湿潤工程２２２を繰り返す。本実施例では、１サイクルあたりの時間を８ｈとした。乾燥工程２２１では温度を６０℃、相対湿度を３５％、保持時間を３ｈ、湿潤工程２２２では温度を４０℃、相対湿度を９５％、保持時間を３ｈとした。さらに乾燥工程２２１から湿潤工程２２２への移行時間、湿潤工程２２２から乾燥工程２２１への移行時間を１ｈとした。   Subsequently, in the wet / dry repeat step 220, the dry step 221 and the wet step 222 are repeated for the DUT 160 to which the salt content is attached. In this example, the time per cycle was 8 hours. In the drying step 221, the temperature was 60 ° C., the relative humidity was 35%, the holding time was 3 hours, and in the wetting step 222, the temperature was 40 ° C., the relative humidity was 95%, and the holding time was 3 hours. Furthermore, the transition time from the drying process 221 to the wetting process 222 and the transition time from the wetting process 222 to the drying process 221 were set to 1 h.

本発明の腐食試験方法による試験結果を実環境での腐食の結果を比較し、結果が一致していることを確認した。   The test results of the corrosion test method of the present invention were compared with the results of corrosion in an actual environment, and it was confirmed that the results were consistent.

本実施例では、本発明の大気腐食試験方法を実施する装置を簡略し、半自動で行う方法について説明する。   In this embodiment, a method for carrying out the atmospheric corrosion test method of the present invention in a simplified and semi-automatic manner will be described.

図３は、本発明の大気腐食試験方法を半自動で実施する装置の構成を示す図である。本発明の大気腐食試験方法を実施する装置１′は、恒温恒湿槽１１０と、塩霧発生装置１２０と、排気装置１３０との組み合わせから構成される。また、図１は、恒温恒湿槽１１０の内部に被試験体１６０を設置した状態を示している。   FIG. 3 is a diagram showing the configuration of an apparatus for performing the atmospheric corrosion test method of the present invention semi-automatically. The apparatus 1 ′ for carrying out the atmospheric corrosion test method of the present invention is composed of a combination of a constant temperature and humidity chamber 110, a salt mist generator 120, and an exhaust device 130. FIG. 1 shows a state in which a device under test 160 is installed inside a constant temperature and humidity chamber 110.

恒温恒湿槽１１０は、恒温恒湿槽内の温度と湿度を独立に制御でき、かつ、温度と湿度を組み合わせた複数の条件を連続的に変化させるプログラム機能を有する。塩霧発生装置１２０は、被試験体１６０に塩分を付着させるための塩水の霧を発生させる。本実施例では、塩水として、濃度３.５％の海水を用いた。排気装置１３０は、恒温恒湿槽１１０内の塩水の霧を除去する。本実施例の排気装置１３０には、除去した塩水の霧から塩水のみを回収し、空気のみを外部に排出するものを使用した。被試験体１６０は、耐食性を評価する材料で、評価面を上向きにして設置する。本実施例では、形状が７０×７０×３mmのアルミニウム合金を用いた。   The constant temperature and humidity chamber 110 can independently control the temperature and humidity in the constant temperature and humidity chamber, and has a program function for continuously changing a plurality of conditions combining temperature and humidity. The salt mist generating device 120 generates a mist of salt water for attaching salt to the DUT 160. In this example, seawater having a concentration of 3.5% was used as the salt water. The exhaust device 130 removes salt water mist in the constant temperature and humidity chamber 110. As the exhaust device 130 of this embodiment, an exhaust device that collects only salt water from the removed salt water mist and discharges only air to the outside is used. The DUT 160 is a material for evaluating corrosion resistance, and is installed with the evaluation surface facing upward. In this example, an aluminum alloy having a shape of 70 × 70 × 3 mm was used.

続いて、本実施例での大気腐食試験方法の手順を、図２を併用して説明する。本発明の大気腐食試験方法では、乾湿繰り返し工程２２０を所定のサイクル繰り返し、その中で、塩分付着工程２１０と洗浄工程２３０を行う。本実施例では、乾湿繰り返し工程を１２週間繰り返し、週２回の頻度で恒温恒湿槽１１０から取り出し、塩分付着工程と洗浄工程を行った。   Then, the procedure of the atmospheric corrosion test method in a present Example is demonstrated using FIG. In the atmospheric corrosion test method of the present invention, the dry / wet repeating step 220 is repeated for a predetermined cycle, in which the salt adhesion step 210 and the cleaning step 230 are performed. In the present example, the wet and dry repeating process was repeated for 12 weeks, and was taken out from the constant temperature and humidity chamber 110 twice a week, and the salt adhesion process and the cleaning process were performed.

噴霧準備２１１では、恒温恒湿槽１１０を稼働させて温湿度を一定にした。本実施例では、３０min以上稼働させて温湿度を一定にした。本実施例では、噴霧準備２１１にて保持する温湿度の温度を４０℃±１℃、相対湿度を３５％ＲＨ±３％とする条件ａにより塩付着を行った。また、比較のため、温度を４０℃±１℃、相対湿度を６５％ＲＨ±３％とする条件ｂ、温度を４０℃±１℃、相対湿度を９５％ＲＨ±３％とする条件ｃについても塩付着を行った。   In the spray preparation 211, the constant temperature and humidity chamber 110 was operated to keep the temperature and humidity constant. In this example, the temperature and humidity were kept constant by operating for 30 minutes or more. In this example, the salt adhesion was performed under the condition a in which the temperature and humidity held in the spray preparation 211 were 40 ° C. ± 1 ° C. and the relative humidity was 35% RH ± 3%. In addition, for comparison, a condition b in which the temperature is 40 ° C. ± 1 ° C. and the relative humidity is 65% RH ± 3%, and a condition c in which the temperature is 40 ° C. ± 1 ° C. and the relative humidity is 95% RH ± 3% Also performed salt deposition.

噴霧２１２では、塩水の霧を発生させて被試験体に塩分を付着させた。事前検討により、付着塩分量は噴霧時間に比例して大きくなることが判っており、本実施例では、１ｍ2当たり１ｇの塩分を付着させるために、噴霧時間を１２minとした。噴霧２１２の後は、速やかに排気装置１３０を稼働し、恒温恒湿槽内に残留した塩水の霧を除去した。条件ａ，条件ｂおよび条件ｃ毎に塩付着工程を行い、それぞれ塩分の付着した被試験体ａ，被試験体ｂおよび被試験体ｃを得た。条件ａでの塩付着粒子の直径は平均で２５μｍであった。条件ｂでの塩付着粒子の直径は平均で５０μｍで、条件ｃでの塩付着粒子の直径は平均で１００μｍであった。温湿度を選定することにより、塩付着粒子の大きさを変えることを確認できた。 In the spray 212, a salt water mist was generated to deposit salt on the test object. According to prior studies, it has been found that the amount of attached salt increases in proportion to the spraying time. In this example, the spraying time was set to 12 minutes in order to deposit 1 g of salt per 1 m 2 . After the spray 212, the exhaust device 130 was immediately operated to remove the salt water mist remaining in the constant temperature and humidity chamber. A salt adhesion step was performed for each of condition a, condition b, and condition c to obtain a test object a, a test object b, and a test object c each having a salt content. The diameter of the salt-adhered particles under condition a was 25 μm on average. The diameter of the salt-adhered particles under condition b was 50 μm on average, and the diameter of the salt-adhered particles under condition c was 100 μm on average. It was confirmed that the size of the salt-adhered particles was changed by selecting the temperature and humidity.

続いて、乾湿繰り返し工程２２０は、塩分を付着させた被試験体１６０に対して、乾燥工程２２１と、湿潤工程２２２を繰り返す。本実施例では、１サイクルあたりの時間を８ｈとした。乾燥工程２２１では温度を６０℃、相対湿度を３５％、保持時間を３ｈ、湿潤工程２２２では温度を４０℃、相対湿度を９５％、保持時間を３ｈとした。さらに乾燥工程から湿潤工程への移行時間、湿潤工程から乾燥工程への移行時間を１ｈとした。   Subsequently, in the wet / dry repeat step 220, the dry step 221 and the wet step 222 are repeated for the DUT 160 to which the salt content is attached. In this example, the time per cycle was 8 hours. In the drying step 221, the temperature was 60 ° C., the relative humidity was 35%, the holding time was 3 hours, and in the wetting step 222, the temperature was 40 ° C., the relative humidity was 95%, and the holding time was 3 hours. Furthermore, the transition time from the drying process to the wetting process and the transition time from the wetting process to the drying process were set to 1 h.

さらに、洗浄工程２３０として、週に２回の頻度で被試験体１６０を取り出し、純水で水洗して、付着していた塩分を洗い流した。水洗後は温風乾燥器で、被試験体１６０に残留した洗浄水を除去し、再び塩分付着工程２１０を行った。   Further, as the cleaning step 230, the test object 160 was taken out twice a week and washed with pure water to wash away the adhering salt. After washing with water, the washing water remaining on the DUT 160 was removed with a warm air dryer, and the salt adhesion step 210 was performed again.

試験開始より１２週経過後に被試験体１６０ａ，被試験体１６０ｂおよび被試験体１６０ｃを回収し，腐食の様子を比較した。被試験体１６０ａでは，僅かに金属光沢が残り、所々に白色の腐食生成物を伴う腐食が観察された。被試験体１６０ｂでは，被試験体１６０ａと同様に僅かに金属光沢が残り、所々に白色の腐食生成物を伴う腐食が観察された。被試験体１６０ｂでの白色の腐食生成物を伴う腐食は、被試験体１６０ａのものと比較して大きかったが、被試験体１６０ｂの腐食の傾向は、被試験体１６０ａと類似していた。被試験体１６０ｃでは，金属光沢があって腐食されていない部分と、白色の腐食生成物を伴って腐食されている部分との差が明瞭であった。被試験体１６０ｃの腐食のされ方は、被試験体１６０ａや被試験体１６０ｂと明らかに異なっていた。被試験体１６０ａ，被試験体１６０ｂおよび被試験体１６０ｃの腐食の様子を実環境での腐食の様子と比較したところ、最も類似していたのは被試験体１６０ａで、被試験体１６０ｃは明らかに異なっていた。   After 12 weeks from the start of the test, the device under test 160a, the device under test 160b, and the device under test 160c were collected and the states of corrosion were compared. In the DUT 160a, a slight metallic luster remained and corrosion with white corrosion products was observed in some places. In the specimen 160b, a slight metallic luster remained as in the specimen 160a, and corrosion with white corrosion products was observed in some places. The corrosion with the white corrosion product in the test object 160b was larger than that of the test object 160a, but the tendency of the test object 160b to corrode was similar to that of the test object 160a. In the DUT 160c, there was a clear difference between a portion having a metallic luster and not corroded and a portion corroded with a white corrosion product. The manner in which the device under test 160c was corroded was clearly different from the device under test 160a and the device under test 160b. When the state of corrosion of the DUT 160a, the DUT 160b, and the DUT 160c was compared with the corrosion in an actual environment, the DUT 160a was the most similar, and the DUT 160c was obvious. Was different.

１ 本発明の大気腐食試験方法を実施する装置
１１０ 恒温恒湿槽
１２０ 塩霧発生装置
１３０ 排気装置
１４０ 洗浄装置
１５０ 温風乾燥装置
１６０ 被試験体
２１０ 塩分付着工程
２１１ 噴霧準備
２１２ 噴霧
２２０ 乾湿繰り返し工程
２２１ 乾燥工程
２２２ 湿潤工程
２３０ 洗浄工程 DESCRIPTION OF SYMBOLS 1 Apparatus 110 which carries out the atmospheric corrosion test method of the present invention 110 Constant temperature and humidity chamber 120 Salt fog generator 130 Exhaust device 140 Cleaning device 150 Hot air drying device 160 Test object 210 Salt adhesion process 211 Spray preparation 212 Spray 220 Drying and drying repetition process 221 Drying process 222 Wetting process 230 Cleaning process

Claims (6)

下記（Ａ）工程の後に（Ｂ）工程を繰り返し行う家電用金属材料の大気腐食試験方法であって、
被試験体への塩分の付着は、温度０〜６０℃、相対湿度１０〜９８％の範囲から設定した１つの条件に保持された空間での塩水噴霧により行うことを特徴とする家電用金属材料の大気腐食試験方法。
（Ａ）被試験体の表面に塩化物イオンを含む塩分を７日間に１回乃至１日間に１回付着させる工程。
（Ｂ）被試験体に温度と相対湿度をステップ状に変化させて設定した、乾燥工程を先に行い、その後に湿潤工程を行うことを１サイクルとする工程であって、このサイクルを複数回行う工程。 It is an atmospheric corrosion test method for metal materials for home appliances in which the step (B) is repeated after the step (A) below,
Adhesion of salt to the DUT is performed by spraying salt water in a space maintained under one condition set from a temperature range of 0 to 60 ° C. and a relative humidity of 10 to 98%. Atmospheric corrosion test method.
(A) A step of attaching a salt containing chloride ions to the surface of a test object once every seven days to once every day.
(B) A process in which the temperature and relative humidity are set to be changed in a stepwise manner on the DUT, the drying process is performed first, and then the wetting process is performed as one cycle, and this cycle is repeated a plurality of times. The process to perform. 請求項１において、前記（Ａ）の工程は、海塩，人工海水，塩化ナトリウム−塩化マグネシウム混合物の溶液から選択された塩水を用いて行い、被試験体の表面に付着させる塩化物イオンを含む塩分の付着量を０.１〜１００００mg／ｍ2の範囲で設定することを特徴とする家電用金属材料の大気腐食試験方法。 2. The step (A) according to claim 1, wherein the step (A) includes chloride ions that are adhered to the surface of the test object using salt water selected from sea salt, artificial sea water, and a solution of a sodium chloride-magnesium chloride mixture. An atmospheric corrosion test method for metal materials for home appliances, characterized in that the adhesion amount of salt is set in the range of 0.1 to 10000 mg / m 2 . 請求項１において、前記（Ｂ）の工程の乾燥工程と湿潤工程の露点変動が±５℃以内に設定され、乾燥工程時間≧湿潤工程時間、かつ、乾燥工程は、温度２０〜６０℃，相対湿度７０％以下，保持時間１〜２４時間、湿潤工程は、温度０〜６０℃，相対湿度８０〜９８％，保持時間１秒〜２４時間の範囲から設定した１つの条件で耐食性を評価することを特徴とする家電用金属材料の大気腐食試験方法。   In claim 1, the dew point variation of the drying step and the wetting step in the step (B) is set within ± 5 ° C, the drying step time ≥ the wetting step time, and the drying step is performed at a temperature of 20-60 ° C, relative Humidity 70% or less, holding time 1 to 24 hours, wet process is to evaluate the corrosion resistance under one condition set from the range of temperature 0 to 60 ° C, relative humidity 80 to 98%, holding time 1 second to 24 hours. An atmospheric corrosion test method for metal materials for home appliances. 請求項１において、被試験体に付着した塩分の粒子の大きさは１０〜３００μｍであることを特徴とする家電用金属材料の大気腐食試験方法。   2. The atmospheric corrosion test method for metal materials for home appliances according to claim 1, wherein the size of the salt particles attached to the object to be tested is 10 to 300 [mu] m. 恒温恒湿槽と、
塩水の霧を発生して被試験体への塩分の付着を行う塩霧発生機構と、
塩水の霧を除去する排気機構と、
被試験体に腐食した塩分を除去する洗浄機構と、を具備する金属材料の耐食性評価装置であって、
被試験体への塩分の付着の際に、温度０〜６０℃，相対湿度１０〜９８％の範囲から設定した１つの条件に保持することを特徴とする家電用金属材料の大気腐食試験装置。 A constant temperature and humidity chamber,
A salt mist generation mechanism that generates salt water mist to adhere salt to the DUT;
An exhaust mechanism that removes saltwater fog;
A cleaning mechanism for removing salt corroded by the test object, and a corrosion resistance evaluation apparatus for metal materials,
An atmospheric corrosion test apparatus for metal materials for home appliances, which is maintained at one condition set from the range of a temperature of 0 to 60 ° C. and a relative humidity of 10 to 98% at the time of adhering salt to a test object. 請求項５において、被試験体に付着した塩分の粒子の大きさは１０〜３００μｍであることを特徴とする家電用金属材料の大気腐食試験装置。   6. The atmospheric corrosion test apparatus for metal materials for home appliances according to claim 5, wherein the size of the salt particles adhering to the test object is 10 to 300 [mu] m.
JP2010167686A 2010-07-27 2010-07-27 Method and device for atmospheric corrosion test of metal material for home electrical appliance Pending JP2012026945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010167686A JP2012026945A (en) 2010-07-27 2010-07-27 Method and device for atmospheric corrosion test of metal material for home electrical appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010167686A JP2012026945A (en) 2010-07-27 2010-07-27 Method and device for atmospheric corrosion test of metal material for home electrical appliance

Publications (1)

Publication Number Publication Date
JP2012026945A true JP2012026945A (en) 2012-02-09

Family

ID=45780026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010167686A Pending JP2012026945A (en) 2010-07-27 2010-07-27 Method and device for atmospheric corrosion test of metal material for home electrical appliance

Country Status (1)

Country Link
JP (1) JP2012026945A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498059A (en) * 2011-12-27 2013-07-03 Hitachi Ltd Atmospheric corrosion test procedure and apparatus
CN104990862A (en) * 2015-08-04 2015-10-21 四川理工学院 Thin liquid film corrosion testing device capable of controlling liquid film thickness automatically
CN105043848A (en) * 2015-06-09 2015-11-11 中南大学 Fatigue testing apparatus and method of metal thin plate in dust environment
CN106442296A (en) * 2016-11-04 2017-02-22 长沙理工大学 Simulating accelerating test method and device for testing corrosion performance of metal in coastal industrial atmosphere
CN111645319A (en) * 2020-07-09 2020-09-11 哈尔滨坤程科技有限公司 Photocuring 3D printing liquid and preparation system and method thereof
CN112240865A (en) * 2019-07-19 2021-01-19 上海沃尔沃汽车研发有限公司 Corrosion test equipment and method for large-scale system-level parts for vehicle
CN114062233A (en) * 2021-10-28 2022-02-18 国家高速列车青岛技术创新中心 Method for detecting corrosion resistance of steel plate
CN114222908A (en) * 2019-08-16 2022-03-22 杰富意钢铁株式会社 Method for evaluating delayed fracture of metal material
CN114993926A (en) * 2022-07-19 2022-09-02 中国电器科学研究院股份有限公司 Novel salt spray environment test system and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1088034A (en) * 1996-09-13 1998-04-07 Nippon Paint Co Ltd Powder coating composition and article coated therewith
JP3066162U (en) * 1999-07-28 2000-02-18 スガ試験機株式会社 Spray test equipment
JP4218280B2 (en) * 2002-08-16 2009-02-04 Ｊｆｅスチール株式会社 Method for evaluating corrosion resistance of steel plates for home appliances and steel plates for electrical and electronic parts for home appliances
JP2009063413A (en) * 2007-09-06 2009-03-26 Toppan Printing Co Ltd Cycle testing apparatus and method
JP2009085945A (en) * 2007-09-10 2009-04-23 Jfe Steel Kk Corrosion resistance evaluation method for metal material, metal material, and corrosion accelerating testing device for metal material
JP2010139450A (en) * 2008-12-15 2010-06-24 Jfe Steel Corp Accelerated corrosion test method of steel products in high-humidity environment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1088034A (en) * 1996-09-13 1998-04-07 Nippon Paint Co Ltd Powder coating composition and article coated therewith
JP3066162U (en) * 1999-07-28 2000-02-18 スガ試験機株式会社 Spray test equipment
JP4218280B2 (en) * 2002-08-16 2009-02-04 Ｊｆｅスチール株式会社 Method for evaluating corrosion resistance of steel plates for home appliances and steel plates for electrical and electronic parts for home appliances
JP2009063413A (en) * 2007-09-06 2009-03-26 Toppan Printing Co Ltd Cycle testing apparatus and method
JP2009085945A (en) * 2007-09-10 2009-04-23 Jfe Steel Kk Corrosion resistance evaluation method for metal material, metal material, and corrosion accelerating testing device for metal material
JP2010139450A (en) * 2008-12-15 2010-06-24 Jfe Steel Corp Accelerated corrosion test method of steel products in high-humidity environment

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498059A (en) * 2011-12-27 2013-07-03 Hitachi Ltd Atmospheric corrosion test procedure and apparatus
GB2498059B (en) * 2011-12-27 2014-08-20 Hitachi Ltd Atmospheric corrosion test procedure
US8927289B2 (en) 2011-12-27 2015-01-06 Hitachi, Ltd. Atmospheric corrosion test procedure and its apparatus
CN105043848A (en) * 2015-06-09 2015-11-11 中南大学 Fatigue testing apparatus and method of metal thin plate in dust environment
CN104990862A (en) * 2015-08-04 2015-10-21 四川理工学院 Thin liquid film corrosion testing device capable of controlling liquid film thickness automatically
CN106442296A (en) * 2016-11-04 2017-02-22 长沙理工大学 Simulating accelerating test method and device for testing corrosion performance of metal in coastal industrial atmosphere
CN112240865B (en) * 2019-07-19 2024-01-23 上海沃尔沃汽车研发有限公司 Corrosion test equipment and method for large system-level parts of vehicle
CN112240865A (en) * 2019-07-19 2021-01-19 上海沃尔沃汽车研发有限公司 Corrosion test equipment and method for large-scale system-level parts for vehicle
CN114222908A (en) * 2019-08-16 2022-03-22 杰富意钢铁株式会社 Method for evaluating delayed fracture of metal material
CN111645319B (en) * 2020-07-09 2022-07-05 北京融通信联科技有限公司 Photocuring 3D printing liquid and preparation system and method thereof
CN111645319A (en) * 2020-07-09 2020-09-11 哈尔滨坤程科技有限公司 Photocuring 3D printing liquid and preparation system and method thereof
CN114062233A (en) * 2021-10-28 2022-02-18 国家高速列车青岛技术创新中心 Method for detecting corrosion resistance of steel plate
CN114993926A (en) * 2022-07-19 2022-09-02 中国电器科学研究院股份有限公司 Novel salt spray environment test system and method

Similar Documents

Publication Publication Date Title
JP2012026945A (en) Method and device for atmospheric corrosion test of metal material for home electrical appliance
JP2013134162A (en) Atmospheric corrosion testing method and atmospheric corrosion testing apparatus
JP4867303B2 (en) Method for evaluating corrosion resistance of metal material, metal material, and corrosion acceleration test apparatus for metal material
JP2010085144A (en) Testing equipment for testing acceleration of atmospheric corrosion
JP5630032B2 (en) Corrosion resistance evaluation method for metal materials for automobile steel plate mating parts and corrosion promotion test equipment for metal materials
JP2008070298A (en) Corrosion resistance testing method and evaluating method for steel material
JP5657728B2 (en) Surface treatment method
CN112414931A (en) Test method for corrosion resistance of galvanized steel sheet under simulated environment
CN109321919A (en) A kind of chemical method of the MCrAlY coating removal on high temperature alloy part
JP2010025560A (en) Corrosion resistance evaluating method of metal material
JP5315869B2 (en) Corrosion resistance evaluation method for metal material, metal material and corrosion acceleration test apparatus for metal material
JP7078232B2 (en) Electroplating process on the surface of refractory metal or stainless steel with an electroplating layer on the surface, and refractory metal or stainless steel
JP3834630B2 (en) Real environment simulated atmospheric corrosion test equipment
JP5176927B2 (en) Test method for accelerated corrosion of steel in high humidity environment
JP2007139483A (en) Corrosion resistance evaluation method of metal material, metal material, and corrosion promotion testing device of metal material
WO2014061077A1 (en) Method for processing glove using sericin solution
JP5035450B2 (en) Method for evaluating corrosion resistance of metal materials for home appliances
JP2011069625A (en) Atmospheric corrosion testing device
JP6755086B2 (en) Corrosion test method and corrosion test equipment
JP4961545B2 (en) Manufacturing method of metal material
JP2011169918A5 (en) Method for evaluating corrosion resistance of metal materials for home appliances
Azarbayjani et al. Evaluating effects of immersion tests in molten copper chloride salts on corrosion resistant coatings
JP2009069143A (en) Method for evaluating weather resistance of metallic material, metallic material, and apparatus for testing corrosion acceleration of metallic material
CN106283027A (en) Brass surfaces prepares the method for silvery white chemical composition coating
JP4218280B2 (en) Method for evaluating corrosion resistance of steel plates for home appliances and steel plates for electrical and electronic parts for home appliances

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20120517

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120829

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130812

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130820

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140107