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Data-oriented method for manufacturing lightweight thin-wall metal sheet

A light-weight technology for sheet metal parts, applied in the field of metal forming, can solve the problems of consuming a lot of time and energy, and achieve the effects of reducing heating time, reducing fuel consumption, and reducing body weight

Active Publication Date: 2019-11-19
帝国理工创新有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional hot stamping forming process and the required time such as figure 2 As shown, the hot stamping process includes a thermoforming process of about 40 minutes and an artificial aging treatment process of several hours. Each process requires a lot of time and energy, especially the artificial aging treatment process even takes hours or days.

Method used

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  • Data-oriented method for manufacturing lightweight thin-wall metal sheet
  • Data-oriented method for manufacturing lightweight thin-wall metal sheet
  • Data-oriented method for manufacturing lightweight thin-wall metal sheet

Examples

Experimental program
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specific Embodiment approach 1

[0047] Specific implementation mode one: combine figure 1 Describe this embodiment, the shaping of parts is realized through following steps:

[0048] The information provided by the user is shown in the table below:

[0049]

[0050] 1. Obtain the sheet metal database through experimental verification in advance, and the sheet metal database includes the crystal phase of each sheet metal and its corresponding optimized forming processing parameters;

[0051] According to the data of the user (such as an automobile manufacturer) on the paint baking process, part design, plastic strain of the material during the manufacturing process, and performance requirements after forming, use a data-oriented method to analyze and select an initial sheet with a specific microstructure. The microstructure of the material can be confirmed by transmission electron microscopy (TEM) observation, thus meeting the specific microstructure requirements for data-oriented method matching.

[00...

specific Embodiment approach 2

[0065] Specific implementation mode two: the following combination figure 1 , figure 2 and image 3 This embodiment will be specifically described. The difference between this embodiment and specific embodiment 1 is that the material of the thin-walled sheet metal part in this embodiment is AA6082 aluminum alloy material, and the thickness of the sheet metal is 2mm. Formed parts are "U" shaped members.

[0066] Based on the information provided by users 1 and 2, the specific microstructure requirements and optimized forming process parameters obtained according to the data-oriented method are as follows:

[0067]

[0068]

[0069] In this embodiment, the parts of user 1 are used for experimental verification.

[0070] Step 2 Select the microstructure of aluminum alloy containing 25% pre-β" phase, 25% GP phase, 40% β" phase and 10% β phase, and heat it rapidly at a heating rate of 45-55°C / s to make the sheet Rapidly warm up to the target temperature (T T ).

[007...

specific Embodiment approach 3

[0075] Specific implementation mode three: the following combination figure 1 , figure 2 and Figure 4 This embodiment will be specifically described. The difference between this embodiment and the first embodiment is that the material of the thin-walled sheet metal parts in this embodiment is ultra-high strength steel, and the thickness of the sheet metal is 2 mm. Formed parts are "U" shaped members.

[0076] Based on the information provided by users 1 and 2, the specific microstructure requirements and optimized forming process parameters obtained according to the data-oriented method are as follows:

[0077]

[0078] In this embodiment, the parts of user 1 are used for experimental verification.

[0079] Step 2 Select the microstructure of ultra-high-strength steel containing 87% martensite, 12% ferrite and 1% austenite, and conduct rapid heating at a heating rate of 55-65°C / s to rapidly heat up the sheet metal to the target temperature (T T ).

[0080] Forming ...

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Abstract

The invention relates to a data-oriented method for manufacturing a lightweight thin-wall metal sheet, and belongs to the field of metal sheet forming. The method solves the problems that a large amount of time and cost are spent in traditional hot stamping forming. The method comprises the following steps of according to data such as the baking finish process, the part design, the plasticity dependent variable of a material in the manufacturing process and the performance requirement after forming of a user, performing analyzing by using a data-oriented method, selecting a metal sheet containing a specific micro-structure, and performing retrieving in a database verified through experiments to obtain the optimized forming parameters; and rapidly heating the metal sheet to a target temperature, controlling the heating rate, rapidly transferring the metal sheet into a cooling mold, performing stamping forming, and quenching the formed metal sheet at a rate not lower than the critical quenching rate. The data-oriented rapid hot forming method is used for manufacturing high-strength steel, a high-strength aluminum alloy and a titanium alloy part which are complex in shape, and meets the requirement of large-scale production of parts in industry.

Description

technical field [0001] The invention relates to a data-oriented method for manufacturing lightweight thin-walled sheet metal parts, which belongs to the field of metal forming. Background technique [0002] According to the report "The 13th Five-Year Plan and 2030 Energy Conservation Targets of the Transportation Sector" released by the Energy Research Institute of the National Development and Reform Commission in 2018, Chinese passenger vehicles are on average 9% heavier and 1% larger than EU vehicles; American cars are 21% lighter and 10% smaller. The average fuel consumption of the Chinese fleet is 26% higher than that of EU vehicles; it is only 4% lower than that of American vehicles. Taking into account the weight of the vehicle, it is higher than the energy consumption of American vehicles. China is currently implementing the fourth phase of the "Fuel Consumption Limits for Passenger Cars", with a target of 6.9L / 100km in 2015 and a target of 5L / 100km in 2020. Under ...

Claims

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Application Information

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IPC IPC(8): B21D22/02B21D37/16B21C51/00C21D1/18C22F1/00C22F1/04C22F1/18
CPCB21C51/00B21D22/022B21D37/16C21D1/18C22F1/002C22F1/04C22F1/183
Inventor 王礼良蔡昭恒萨克什姆·达旺奥马尔·伊法基尔孙雨豪张群力栾禧吴冈
Owner 帝国理工创新有限公司
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