CN103884715A - Metal surface dephosphorization quality detection method - Google Patents
Metal surface dephosphorization quality detection method Download PDFInfo
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- CN103884715A CN103884715A CN201410085301.9A CN201410085301A CN103884715A CN 103884715 A CN103884715 A CN 103884715A CN 201410085301 A CN201410085301 A CN 201410085301A CN 103884715 A CN103884715 A CN 103884715A
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- dephosphorization
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- quality detection
- metal surface
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Abstract
The invention provides a metal surface dephosphorization quality detection method. The metal surface dephosphorization quality detection method comprises the following steps: cleanly washing a piece to be detected, which is subjected to dephosphorization and heat treatment; drying by blowing and cutting along a direction which is vertical to a phosphating film covering surface; polishing and putting a polished cutting surface under a microscope; and observing by using a 100-multiplying power objective lens, judging that the phosphating film is still attached to the surface of the piece to be detected when the outer edge of the cutting surface has white attachments and the phosphating film on the surface of the piece to be detected is cleaned when the outer edge of the cutting surface has no white attachments. According to the metal surface dephosphorization quality detection method, when the dephosphorization quality detection is carried out, the cutting surface of the piece to be detected is observed under the condition of amplifying for 100 times; the method provides a specific judgment standard and can be used for accurately and rapidly detecting whether the surface of the piece to be detected has the residual phosphating film; used detection equipment is a very universal common metallographic microscope and the method is easy to operate, easy to realize and low in cost.
Description
Technical field
The present invention relates to a kind of metal surface dephosphorization quality determining method.
Background technology
In metal cold forming field, metal mostly needs effects on surface to carry out wear-resisting phosphatization before moulding, plays lubricated, antifriction and antirust, can improve Forming Quality and mould has made the life-span.But require again measured piece surface can not have phosphating coat in follow-up thermal treatment and surface treatment procedure; As shown in the label 4 in Fig. 1, phosphating coat can cause the crisp and surface and oil contaminant sintering of phosphorus to measured piece at heat treatment step, the crisp risk of breakage that can increase high strength parts of phosphorus, surface and oil contaminant sintering can cause follow-up surface treatment difficulty to increase, cost raises, so can adopt under normal circumstances the mode of dephosphorization to remove phosphating coat.
The method of dephosphorization is a lot, whether but remove for the phosphating coat of metal surface, to detect completely neither one directly perceived, method accurately, normally detect by the method for seeing outward appearance, but the clear and definite judgment criteria of this method neither one, not easy to operate, very strong to testing staff's level of skill dependence, be unfavorable for quality management and control.
Summary of the invention
The invention provides a kind of metal surface dephosphorization quality determining method, having solved traditional visual detection method does not have clear and definite, workable reference standards, relies on testing staff's experience to judge the problem of quality level completely.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of metal surface dephosphorization quality determining method, measured piece after dephosphorization thermal treatment is cleaned up, dry up, and along cutting perpendicular to phosphating coat coverage rate direction, polishing, then the tangent plane of polishing is put under the microscope, observe with 100 multiplying power object lens, tangent plane outer rim adularescent attachment represents that measured piece surface still has and adheres to phosphating coat, and tangent plane outer rim represents that without white attachment measured piece alramenting film removes clean.
Beneficial effect: the present invention will measured piece tangent plane amplifies in the situation of 100 times to observe, and provide clear and definite criterion, can judge accurately and rapidly whether measured piece surface has residual phosphating coat, and institute's use checkout equipment is very general common metaloscope, easy to operate, easily realize, and with low cost.
Accompanying drawing explanation
Fig. 1 is that in measured piece, surface attachment has phosphating coat schematic diagram.
Fig. 2 is surperficial without phosphating coat schematic diagram in measured piece.
In figure, 1 is measured piece surface, the 2nd, and measured piece tangent plane, the 3rd, tangent plane outer rim, the 4th, phosphating coat.
Embodiment
A kind of metal surface dephosphorization quality determining method, measured piece after dephosphorization thermal treatment is soaked 3 minutes at normal temperatures with acetone, the greasy dirt on measured piece surface is cleaned up, while preventing from examining under a microscope, produce and disturb, after airing, cut perpendicular to phosphating coat coverage rate direction on edge, polishing, then puts the tangent plane of polishing under the microscope, with 100 multiplying power object lens observations; As shown in Figure 1, tangent plane outer rim 3 adularescent attachments represent that measured piece surface 1 still has and adhere to phosphating coat 4; As shown in Figure 2, tangent plane outer rim 3 represents that without white attachment 1 phosphating coat 4 removals of measured piece surface are clean.
The metallographic method of the invention has clear and definite criterion, whether can intuitive and accurately judge the phosphating coat on detected member surface removes totally, do not rely on testing staff's level of skill completely, can guarantee dephosphorization quality, avoid causing final products to occur hydrogen embrittlement fracture because judgement is inaccurate, caused the heavy losses of car load and engine.
Claims (1)
1. a metal surface dephosphorization quality determining method, measured piece after dephosphorization thermal treatment is cleaned up, dry up, and along cutting perpendicular to phosphating coat coverage rate direction, polishing, then puts the tangent plane of polishing under the microscope, with 100 multiplying power object lens observations, tangent plane outer rim adularescent attachment represents that measured piece surface still has and adheres to phosphating coat, and tangent plane outer rim represents that without white attachment measured piece alramenting film removes clean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085301.9A CN103884715A (en) | 2014-03-11 | 2014-03-11 | Metal surface dephosphorization quality detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085301.9A CN103884715A (en) | 2014-03-11 | 2014-03-11 | Metal surface dephosphorization quality detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103884715A true CN103884715A (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410085301.9A Pending CN103884715A (en) | 2014-03-11 | 2014-03-11 | Metal surface dephosphorization quality detection method |
Country Status (1)
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| CN (1) | CN103884715A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003048A (en) * | 2006-12-06 | 2007-07-25 | 钟世雄 | Rolling type multiple work position equipment for removing oil and removing phosphorus for work piece surface, and method therefor |
| CN103604392A (en) * | 2013-11-26 | 2014-02-26 | 洛阳Lyc轴承有限公司 | Phosphating film depth determination method |
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2014
- 2014-03-11 CN CN201410085301.9A patent/CN103884715A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003048A (en) * | 2006-12-06 | 2007-07-25 | 钟世雄 | Rolling type multiple work position equipment for removing oil and removing phosphorus for work piece surface, and method therefor |
| CN103604392A (en) * | 2013-11-26 | 2014-02-26 | 洛阳Lyc轴承有限公司 | Phosphating film depth determination method |
Non-Patent Citations (2)
| Title |
|---|
| 机械科学研究院等: "GB/T 3098.1-2000 紧固件机械性能 螺栓、螺钉和螺柱", 《中华人民共和国国家标准》 * |
| 王海燕等: "报废镁合金零部件表面涂层去除机理研究", 《第十七届全国冶金反应工程学学术会议论文》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140625 |