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Phosphated screw

一种磷化、螺钉的技术，应用在螺栓、螺母、螺纹紧固件等方向，能够解决不够耐压等问题

Inactive Publication Date: 2013-11-13
RUIA GLOBAL FASTENERS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solid lubricating films have the disadvantage that they are either too thick, causing too much wear, or not pressure-resistant enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The present invention proposes for the first time to provide a silicon seal to phosphated screws, for example, the company Herdecke, Germany Product Delta-Protekt of MKS-Systeme GmbH & Co.KG VH301GZ, or the product Plus of Dacral S.A., a company in Creil, France VL PLS0218. Such silicon seals have previously only been used on zinc dust surfaces; they have not previously been used on phosphate layers of phosphated screws for increased corrosion resistance and to achieve a defined coefficient of friction.

[0009] The preferred silicon seal in this case consists of an aqueous solution of 55% to 65% silicon dioxide, 35% to 41% lithium oxide and 0.5% to 2% 2-butoxyethanol as solvent. propanol and lithium hydroxide, or include 73% sodium silicate (ie, sodium silicate) aqueous solution and 14% to 19% acrylic resin and 10% to 11% polytetrafluoroethylene (PTFE).

[0010] The advantage of the invention is that, for the first time, it is possible to obtain, for the first t...

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PUM

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Abstract

Phosphated screw which after phosphating is provided with a siliceous sealing layer and has been rolled only after phosphating and after application of the siliceous sealing layer.

Description

technical field [0001] The present invention relates to phosphated screws. Background technique [0002] Currently, in the automotive industry, all screws built into the engine are phosphated and then oiled to maintain a certain corrosion resistance and a defined coefficient of friction in accordance with OEM and German Automotive Industry standards. This creates the problem that the necessary oiling renders the screws so greasy that residual oil collects in the transport packaging and must be cleaned before being returned. Additionally, excess oil fouls the automatic assembly system. Consequently, these systems must be cleaned frequently, which results in the systems having to be idled unnecessarily. The application of oil also causes dirt or debris that comes into contact with the screws to adhere to the screws. In the case of large foreign objects, incorrect screw assembly can result. Contents of the invention [0003] Based on the prior art, therefore, it was an ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C23C22/83F16B33/00C23C28/00
CPCY02E50/343C23C28/00C23C28/04C23C22/83F16B33/008F16B33/00
Inventor 托尔斯特恩·施瑞尔
Owner RUIA GLOBAL FASTENERS AG