Material Differences of Copper Engraving Paintings

Copper engraving paintings are a type of artworks and are widely applied, commonly seen in fields such as paintings, sculptures, handicrafts, etc. When creating copper engraving paintings, choosing the appropriate material is extremely important. Different materials of copper engraving paintings have distinct characteristics and values. This article will focus on introducing two commonly used materials in copper engraving paintings - purple copper and brass, as well as their material differences.

Purple Copper

Purple copper, also known as red copper or yellow copper, is an alloy of copper. It refers to a copper alloy containing less than 50% zinc, usually with a small amount of elements such as aluminum, manganese, iron, and nickel. It has good malleability, corrosion resistance, shrinkage, and weldability, and is one of the commonly used materials in art production.

When creating copper engraving paintings, the material of purple copper has good plasticity. Through processing methods such as hammering, drawing, and extrusion, various shapes of copper engraving paintings can be produced. In addition, the color of purple copper is bright, and different patterns can be created through different processing methods, making it suitable for creating artworks that express complex emotions.

Brass

Brass is composed of elements such as copper and zinc, with unequal proportions of copper and zinc. It usually contains 45% to 90% copper. Due to the higher zinc content in brass, it has good strength and wear resistance, making it suitable for creating copper engraving paintings for some special occasions.

When creating copper engraving paintings, the material of brass has good engraving and plasticity. Copper engraving paintings made of brass can also create various specific patterns and surface effects through special techniques. Therefore, it is often used in creating complex geometric patterns, hammer marks, and other mosaic patterns.

Material Differences

Although both purple copper and brass are commonly used materials for creating copper engraving paintings, their material differences are significant.

Strength Difference

The copper content of purple copper is higher than that of brass, while the zinc content of brass is higher. Therefore, the hardness and strength of brass are relatively higher. When creating large and complex copper engraving paintings, the strength of brass can better guarantee the quality and stability of the copper engraving paintings.

Plasticity Difference

Although the hardness and strength of brass are superior to those of purple copper, its plasticity is slightly lower than that of purple copper. Therefore, when creating copper engraving paintings with complex shapes and numerous details, the plasticity of purple copper has more advantages and can present more refined details and curves.

Corrosion Resistance Difference

Compared to brass, purple copper has better corrosion resistance. When creating copper engraving paintings, copper undergoes an oxidation reaction over time, forming a layer of green rust. The rust layer of purple copper is more resistant to acid and corrosion and is not easily affected by natural environments such as weathering. Therefore, copper engraving paintings using purple copper are superior to those using brass in terms of service life and aesthetics.

Conclusion

Overall, both purple copper and brass are commonly used materials for creating copper engraving paintings. The different characteristics determined by the materials are more focused on the shape, pattern, and service life of copper engraving paintings. Different materials are applied in different occasions and requirements. Choosing the appropriate material and using the appropriate processing technique can create beautiful and durable copper engraving painting artworks. 

铜雕画的材质差异

铜雕画是一种艺术品，应用广泛，常见于绘画、雕塑、工艺品等领域。在制作铜雕画时，选择合适的材质是非常重要的，不同材质的铜雕画有着不同的特点和价值。本文将重点介绍铜雕画中常用的两种材质——紫金铜和黄铜，以及它们的材质差异。

紫金铜

紫金铜，又称紫铜、黄铜等，是铜的一种合金。它是指含有低于50%的锌的铜合金，通常含有少量的铝、锰、铁、镍等元素。具有良好的可锻性、耐腐蚀性、收缩性和可焊性，是艺术品制作的常用材料之一。

在制作铜雕画时，紫金铜的材质有着良好的可塑性，可以通过锤打、拉拔、挤压等加工方式，制作出各种形状的铜雕画。此外，紫金铜的颜色鲜艳，可以通过不同的加工方式制作出不同的纹样，适合制作富于复杂情感表达的艺术品。

黄铜

黄铜是由铜、锌等元素合成的，铜和锌的比例不等，通常含有45%至90%的铜。黄铜由于含有较高的锌元素，有着良好的强度和耐磨性，适合制作一些特殊场合的铜雕画。

在制作铜雕画时，黄铜的材质具有良好的可刻性和可塑性。黄铜材质的铜雕画也可以透过特殊工艺制作出各种特定的纹样和表面效果，所以常被用在制作复杂的几何图案、锤纹等马赛克图案。

材质差异

尽管紫金铜和黄铜都是制作铜雕画的常用材质，但它们的材质差异还是很大的。

强度差异

紫金铜的含铜量高于黄铜，而黄铜的含锌量较高，因此黄铜的硬度和强度相对较高。在制作大型、复杂的铜雕画时，黄铜的强度更能够保证铜雕画的质量和稳定性。

可塑性差异

虽然黄铜的硬度和强度都要优于紫金铜，但是它的可塑性则比紫金铜要低一些。因此，在制作形状复杂、细节繁多的铜雕画时，紫金铜的可塑性则更具优势，可以表现出更加精细的细节和曲线。

耐腐蚀性差异

紫金铜相对于黄铜来说，拥有更好的耐腐蚀性。在制作铜雕画时，铜会随时间的推移发生氧化反应，形成一层绿锈，而紫金铜的锈层更耐酸性和腐蚀性，不易被风化等自然环境影响。因此，使用紫金铜的铜雕画在使用寿命和美观上都优于黄铜。

结论

总的来说，紫金铜和黄铜都是制作铜雕画的常用材质，材质所决定的不同特性更侧重于铜雕画的形状、纹样和使用寿命等。不同的材质应用于不同的场合和需求，选择合适的材质，使用合适的工艺处理，才能制作出优美、耐久的铜雕画艺术品。