TWI744652B

TWI744652B - Environmental protection rust removal process for metal wire

Info

Publication number: TWI744652B
Application number: TW108121654A
Authority: TW
Inventors: 陳志宏
Original assignee: 國聯機械實業股份有限公司
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2021-11-01
Also published as: TW202100257A

Abstract

一種金屬線材環保除銹製程，包含一除銹步驟、一退火步驟、一後處理步驟，及一精抽步驟。在該除銹步驟中，對一線材進行機械除銹及粗抽伸線。在該退火步驟中，對粗抽後的該線材進行球狀化退火。在該後處理步驟中，對該線材線上披覆物理皮膜或化學反應皮膜，及進行皂化潤滑處理。在該精抽步驟中，對該線材進行精抽伸線以完成除銹。相較於習知除銹製程的繁複，本發明僅需四個道次，可大幅縮短工時並降低成本，且流程皆在線上完成，不需反覆搬運該線材，使整體的稼動率大幅提高。此外，本發明在該除銹步驟中，未使用酸液進行酸洗，因而可避免廢棄酸液造成的環保問題。An environmentally-friendly rust removal process for metal wires includes a rust removal step, an annealing step, a post-treatment step, and a fine extraction step. In this descaling step, a wire rod is mechanically descaled and the wire is roughly drawn. In this annealing step, the wire rod after rough drawing is subjected to spheroidization annealing. In the post-processing step, the wire rod is covered with a physical film or a chemical reaction film, and a saponification lubrication treatment is performed. In this fine extraction step, the wire rod is finely drawn and drawn to complete rust removal. Compared with the complicated process of conventional descaling, the present invention only requires four passes, which can greatly shorten man-hours and reduce costs, and the processes are all completed online, without the need to repeatedly transport the wire, which greatly improves the overall utilization rate . In addition, the present invention does not use acid solution for pickling in the rust removal step, so the environmental protection problem caused by waste acid solution can be avoided.

Description

金屬線材環保除銹製程Environmental protection rust removal process for metal wire

本發明是有關於一種除銹製程，特別是指一種道次較少且能完全無化學酸液汙染的金屬線材環保除銹製程及皮膜披覆製程。The present invention relates to a rust removing process, in particular to an environmentally friendly rust removing process and a film coating process for metal wires that have fewer passes and are completely free of chemical acid pollution.

一般金屬線材容易因上游製程或放置而在表面產生一層銹皮，為了除去這層銹皮以提高金屬線材的品質，一般會對金屬線材施以一除銹製程，參閱圖1，該除銹製程包含一酸洗步驟11、一第一退火步驟12、一第一處理步驟13、一粗抽步驟14、一第二退火步驟15、一第二處理步驟16，及一精抽步驟17。在該酸洗步驟11中，將一線材置於一盛有鹽酸的酸洗槽中，浸置一段時間後將該線材撈起並移出該酸洗槽。在該第一退火步驟12中，將該線材搬運至一退火爐內，以進行球狀化退火處理。在該第一處理步驟13中，再次將該線材搬運至該酸洗槽內進行酸洗，並於撈起後置入一磷酸鹽槽中，以使該線材的表面形成具有保護作用的磷酸鹽皮膜，接著再次將該線材撈起，並對該線材進行皂化潤滑。在該粗抽步驟14中，將該線材進行粗抽伸線。在該第二退火步驟15中，對伸線後的該線材再次以退火爐進行球狀化退火處理。在該第二處理步驟16中，對該線材再次重複該第一處理步驟之動作。最後，在該精抽步驟17中，對該線材進行精抽伸線並完成該除銹製程。Generally, metal wires are prone to produce a layer of scale on the surface due to the upstream process or placement. In order to remove this layer of scale and improve the quality of the metal wire, a rust removal process is generally applied to the metal wire. Refer to Figure 1, the rust removal process It includes a pickling step 11, a first annealing step 12, a first processing step 13, a rough extraction step 14, a second annealing step 15, a second processing step 16, and a fine extraction step 17. In the pickling step 11, a wire is placed in a pickling tank containing hydrochloric acid, and after being immersed for a period of time, the wire is picked up and removed from the pickling tank. In the first annealing step 12, the wire is transported to an annealing furnace for spheroidizing annealing treatment. In the first processing step 13, the wire is again transported to the pickling tank for pickling, and after being picked up, it is placed in a phosphate tank, so that a protective phosphate is formed on the surface of the wire. The film is then picked up again, and the wire is saponified and lubricated. In this rough drawing step 14, the wire is subjected to rough drawing. In the second annealing step 15, the wire rod after the wire drawing is subjected to a spheroidizing annealing treatment in an annealing furnace again. In the second processing step 16, the action of the first processing step is repeated again for the wire. Finally, in the fine extraction step 17, the wire rod is finely drawn and drawn and the rust removal process is completed.

該除銹製程需要經過七個道次，且該線材需在產線及浸置槽間來回搬運，需耗費大量的工時、工序及成本，此外，在該酸洗步驟11、該第一處理步驟13及該第二處理步驟16中，需以鹽酸對該線材進行酸洗以除去銹皮，而使用後的鹽酸會成為含大量鐵離子及少量重金屬的廢酸液，這些廢酸液需集中處理且容易產生汙染物而有害於環境。The rust removal process needs to go through seven passes, and the wire needs to be transported back and forth between the production line and the immersion tank, which requires a lot of man-hours, procedures and costs. In addition, in the pickling step 11, the first treatment In step 13 and the second treatment step 16, the wire rod needs to be pickled with hydrochloric acid to remove the scale, and the used hydrochloric acid will become a waste acid containing a large amount of iron ions and a small amount of heavy metals, and these waste acids need to be concentrated It is easy to produce pollutants and harmful to the environment.

因此，本發明之目的，即在提供一種道次較少且較環保的除銹製程。Therefore, the purpose of the present invention is to provide a rust removal process with fewer passes and more environmentally friendly.

於是，本發明金屬線材環保除銹製程，包含一除銹步驟、一退火步驟、一後處理步驟，及一精抽步驟。在該除銹步驟中，對一沿一製程方向連續進給的線材進行機械除銹或噴丸除銹，並以一輥輪組對該線材進行粗抽伸線。在該退火步驟中，對粗抽後的該線材進行球狀化退火。在該後處理步驟中，沿該製程方向對該線材進行線上砂布機清潔及線上披覆皮膜，接著再進行皂化潤滑處理。在該精抽步驟中，對該線材進行精抽伸線以完成除銹。Therefore, the environmentally friendly rust removal process for the metal wire of the present invention includes a rust removal step, an annealing step, a post-treatment step, and a fine extraction step. In the descaling step, a wire continuously fed along a process direction is mechanically descaled or shot blasted, and a roller set is used to rough draw the wire. In this annealing step, the wire rod after rough drawing is subjected to spheroidization annealing. In the post-processing step, the wire is cleaned with an on-line emery cloth machine and coated with a film on the wire along the process direction, and then saponified and lubricated. In this fine extraction step, the wire rod is finely drawn and drawn to complete rust removal.

本發明之功效在於：相較於習知除銹製程的繁複，本發明僅需四個道次，可大幅縮短工時並降低成本，且包括披覆皮膜在內的流程皆在線上完成，不需反覆搬運該線材，使整體的稼動率大幅提高。此外，本發明在該除銹步驟中，未使用酸液進行酸洗，因而可避免廢棄酸液及廢水造成的環保問題。The effect of the present invention is that compared with the complicated rust removal process of the prior art, the present invention only requires four passes, which can greatly shorten the working hours and reduce the cost, and the processes including the coating film are all completed on-line. The wire needs to be transported repeatedly to greatly increase the overall utilization rate. In addition, the present invention does not use acid liquid for pickling in the rust removal step, so environmental problems caused by waste acid liquid and wastewater can be avoided.

參閱圖2，本發明金屬線材環保除銹製程之一實施例，包含一除銹步驟21、一退火步驟22、一後處理步驟23，及一精抽步驟24。在該除銹步驟21中，對一沿一製程方向連續進給的線材進行機械除銹，包括進行剝殼除銹、鋼刷除銹、砂布除銹及珠擊(噴丸)除銹等流程，使用者可根據作業需求及目的自行選擇。在機械除銹後，以一輥輪組對該線材進行粗抽伸線，且粗抽伸線後的減面率達到25%以上。Referring to FIG. 2, an embodiment of the environmentally friendly derusting process for metal wires of the present invention includes a derusting step 21, an annealing step 22, a post-treatment step 23, and a fine extraction step 24. In the rust removal step 21, a wire continuously fed along a process direction is mechanically removed, including peeling and rust removal, steel brush rust removal, emery cloth rust removal, and bead (shot peening) rust removal. , The user can choose according to the operation needs and purpose. After mechanical descaling, the wire is rough drawn with a roller set, and the surface reduction rate after rough drawing can reach more than 25%.

在該退火步驟22中，將該線材送至一氫氣爐在約760℃~780℃的溫度下進行光輝球狀化退火，透過氫氣還原鐵可減輕造成後續氧化之情形。In the annealing step 22, the wire is sent to a hydrogen furnace for brilliant spheroidization annealing at a temperature of about 760°C to 780°C. The reduction of iron through hydrogen can reduce the subsequent oxidation.

在該後處理步驟23中，沿該製程方向對該線材進行砂布機線上清潔處理，以刷去殘餘及未還原鐵的鐵銹至乾淨無殘留，後續再對該線材表面進行線上披覆物理皮膜或化學反應皮膜，接著進行皂化潤滑處理，前述的作業皆在線上進行，因此不需搬運該線材至磷酸鹽槽，可大幅提升作業速率。需要特別注意的是，該後處理步驟23也可視情形改以搬運後酸洗以披覆磷酸鹽的方式來進行，以增加選擇上的彈性。In the post-processing step 23, the wire is cleaned with emery cloth along the process direction to brush off the residual and unreduced iron rust until it is clean and free of residue, and then the wire surface is covered with a physical film or The chemical reaction coating is followed by saponification and lubrication treatment. The aforementioned operations are all performed on-line, so there is no need to transport the wire to the phosphate tank, which can greatly increase the operating rate. It should be noted that the post-processing step 23 can also be changed to pickling after handling and coating with phosphate, depending on the situation, so as to increase the flexibility of selection.

最後，在該精抽步驟24中，對表面披覆皮膜及皂化潤滑後的線材進行精抽伸線，從而完成該金屬線材環保除銹製程。本實施例將處理道次大幅縮短，僅需四個道次便可完成除銹，如此可有效節省工時及降低成本。Finally, in the fine extraction step 24, the wire rod whose surface is coated with a film and saponified and lubricated is subjected to a fine drawing line, so as to complete the environmental protection rust removal process of the metal wire rod. In this embodiment, the processing passes are greatly shortened, and rust removal can be completed in only four passes, which can effectively save man-hours and reduce costs.

綜上所述，本發明透過機械除銹及線上披覆皮膜的方式來避免使用鹽酸進行酸洗，因此不會產生有害於環境的廢棄酸液及廢水，可大幅降低對環境的衝擊，本實施例的作業皆可在線上完成，避免不必要的反覆搬運，且能連續進給該線材以進行除銹處理，可提高稼動率及作業效率，故確實能達成本發明之目的。In summary, the present invention avoids the use of hydrochloric acid for pickling through mechanical rust removal and online coating of the film, so it will not produce waste acid and waste water harmful to the environment, and can greatly reduce the impact on the environment. The operations in the examples can be completed on-line to avoid unnecessary repeated handling, and the wire can be continuously fed for rust removal, which can increase the utilization rate and work efficiency, so it can indeed achieve the purpose of the invention.

惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

21:除銹步驟 22:退火步驟 23:後處理步驟 24:精抽步驟21: Derusting steps 22: Annealing step 23: Post-processing steps 24: Fine pumping step

本發明之其它的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是一流程圖，說明一習知的除銹製程之流程；及圖2是一流程圖，說明本發明金屬線材環保除銹製程之一實施例。Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a flowchart illustrating the flow of a conventional descaling process; and Fig. 2 is a flow chart illustrating an embodiment of the environmentally friendly rust removal process for metal wires of the present invention.

21:除銹步驟 21: Derusting steps

22:退火步驟 22: Annealing step

23:後處理步驟 23: Post-processing steps

24:精抽步驟 24: Fine pumping step

Claims

一種金屬線材環保除銹製程，包含：除銹步驟，對一沿一製程方向連續進給的線材進行機械除銹，並以一輥輪組對該線材進行粗抽伸線；一退火步驟，對粗抽後的該線材以一氫氣爐進行光輝球狀化退火；一後處理步驟，沿該製程方向對該線材進行線上砂布機清潔及線上披覆皮膜，接著再進行皂化潤滑處理；及一精抽步驟，對該線材進行精抽伸線以完成除銹。 An environmentally friendly metal wire derusting process, comprising: a derusting step, mechanically derusting a wire continuously fed along a process direction, and rough drawing the wire with a roller set; and an annealing step: The drawn wire is annealed in a hydrogen furnace for brilliant spheroidization; a post-processing step is to perform online emery cloth machine cleaning and online coating of the wire along the process direction, and then perform saponification and lubrication treatment; and a fine extraction In the step, the wire is finely drawn and drawn to complete the rust removal.

如請求項1所述的金屬線材環保除銹製程，其中，在該退火步驟中，該氫氣爐的退火溫度為攝氏760度至攝氏780度。 The environmental protection derusting process for metal wires according to claim 1, wherein, in the annealing step, the annealing temperature of the hydrogen furnace is 760 degrees Celsius to 780 degrees Celsius.

如請求項1所述的金屬線材環保除銹製程，其中，在該後處理步驟中，該線材經線上處理後使表面披覆物理皮膜或化學反應皮膜。 The environmental protection rust removal process for metal wires according to claim 1, wherein, in the post-processing step, the wire is processed on-line to coat the surface with a physical film or a chemical reaction film.

如請求項1所述的金屬線材環保除銹製程，其中，在該除銹步驟中，該線材粗抽後的減面率為25%以上。 According to the environmental protection derusting process of metal wire rod according to claim 1, wherein, in the derusting step, the surface reduction rate of the wire rod after rough drawing is more than 25%.

如請求項1所述的金屬線材環保除銹製程，其中，在該除銹步驟中，對該線材進行剝殼除銹、鋼刷除銹及砂布除銹。 The environmental protection derusting process for metal wire according to claim 1, wherein in the derusting step, the wire is peeled and derusted, steel brush derusting, and emery cloth derusting are performed on the wire.

如請求項1所述的金屬線材環保除銹製程，其中，在該除銹步驟中，對該線材進行珠擊除銹。 The environmental protection derusting process for metal wire according to claim 1, wherein, in the derusting step, the wire is derusted by beading.