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Henan Friend Metal Products Co.,Ltd

The Reasons For The Spring Steel Wire Of Pickling And Pickling Defects

The reasons for the Spring Steel Wire of pickling and pickling defects
Oxygen pickling is generally due to inadequate pickling time, of course, the concentration of acid solution is one of the factors. Such as sulfuric acid solution may be insufficient temperature. Semi-finished Spring Steel Wire is not wearing a bar, or although the bar and too dense, acid flow through the poor, it will be in the local residual different degrees of oxide. In addition, the surface of spring steel products such as contaminated oil, will also cause under pickling. Pickled Spring Steel Wire surface with a layer of dark gray similar to the sludge of the oil-like film, with a hydrogen embrittlement. Suan pickling defects are generally easy to identify, in the Spring Steel Wire surface to produce easy to wipe the black coating is. In severe cases, even measured quality and weight loss may occur. As the pickling solution is too strong to produce a black layer of erosion, then the carbon contained in the steel on the surface of the Spring Steel Wire.
Above we share with you the Spring Steel Wire of the lack of pickling and over pickling their performance and defects, is the so-called know ourselves, know yourself, understand the causes of these defects, as long as we in the production process more attention, will greatly improve the product The pass rate.
Ordinary steel wire can not directly manufacture Spring Steel Wire, must have a special surface treatment, already has spring steel with tensile strength, compressive strength, fatigue resistance, Kang friction, stable performance, long life, corrosion resistance and other performance indicators.
Surface treatment of Spring Steel Wire
Generally include anti-physical wear and chemical resistance of two parts of the treatment, anti-physical wear, Spring Steel Wire surface with a special alloy material, with wear, tensile, compression and other special properties. Anti-chemical corrosion treatment, Spring Steel Wire surface plating stainless steel or galvanized and other anti-corrosion treatment process to avoid the Spring Steel Wire is chemical corrosion, affecting its service life.
Spring Steel Wire also need to lead the bath, the purpose is to improve the Spring Steel Wire chemical properties and stability, Spring Steel Wire surface through the lead bath to ensure its long-term stability of chemical properties.
Spring Steel Wire in the design, the need to consider a number of factors, this article mainly talk about the Spring Steel Wire in the design should be considered aspects.
The diameter of the Spring Steel Wire
The diameter of the Spring Steel Wire diameter affects the other aspects of the Spring Steel Wire, so depending on the requirements, select the appropriate diameter, the greater the diameter of the general Spring Steel Wire the higher the quality.
Number of work cycles
The number of work cycles is also the Spring Steel Wire design, an important consideration, the more the number of working cycles, the greater the Spring Steel Wire bearing capacity, otherwise the opposite, so the Spring Steel Wire according to the mature ability to select the Spring Steel Wire turns.
Volume, weight, stability and other factors
In the design of Spring Steel Wire, but also consider other factors, such as volume, volume and engineering machinery is appropriate, whether the weight is excessive, stable performance is reliable, and life.
The production process of Spring Steel Wire generally includes the selection of high quality wire - "pre-pickling -" pickling - "secondary pickling -" water red - "high temperature phosphating (medium temperature phosphating) -" neutralization " Drying - "drawing.
Phosphating need to heat the general use of resistance components heating method, heating is to slowly add to avoid rapid cooling, stability to control in a reasonable range, the temperature can not be improved and too low, the general phosphating temperature do not check 100 degrees Celsius. The impact of Spring Steel Wire quality is mainly three aspects, the choice of raw materials, select high-quality wire, pickling should be in place, phosphate to be in place, do these three aspects, the basic can ensure the quality of Spring Steel Wire.

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